Article 210

Branch Circuits

Part I. General Provisions

210.1 Scope. This article provides the general requirements for branch circuits.

Other Articles for Specific-Purpose Branch Circuits. Table 210.3 lists references for specific equipment and applica‐ tions not located in Chapters 5, 6, and 7 that amend or supple‐ ment the requirements of this article.•
Multiwire Branch Circuits.
1. General. Branch circuits recognized by this article shall be permitted as multiwire circuits. A multiwire circuit shall be permitted to be considered as multiple circuits. All conductors of a multiwire branch circuit shall originate from the same panelboard or similar distribution equipment.Informational Note No. 1: A 3-phase, 4-wire, wye-connected power system used to supply power to nonlinear loads may necessitate that the power system design allow for the possibility of high harmonic currents on the neutral conductor.Informational Note No. 2: See 300.13(B) for continuity of grounded conductors on multiwire circuits.
2. Disconnecting Means. Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect
  Table 210.3 Specific-Purpose Branch Circuits
  Equipment Article Sectionall ungrounded conductors at the point where the branch circuit originates.Informational Note: See 240.15(B) for information on the use of single-pole circuit breakers as the disconnecting means.
3. Line-to-Neutral Loads. Multiwire branch circuits shall supply only line-to-neutral loads.Exception No. 1: A multiwire branch circuit that supplies only one utilization equipment.Exception No. 2: Where all ungrounded conductors of the multiwire branch circuit are opened simultaneously by the branch-circuit overcur‐ rent device.
4. Grouping. The ungrounded and grounded circuit conductors of each multiwire branch circuit shall be grouped in accordance with 200.4(B).
•
Identification for Branch Circuits.
1. Grounded Conductor. The grounded conductor of a branch circuit shall be identified in accordance with 200.6.
2. Equipment Grounding Conductor. The equipment grounding conductor shall be identified in accordance with 250.119.
3. Identification of Ungrounded Conductors. Ungrounded conductors shall be identified in accordance with 210.5(C)(1) or (2), as applicable.
  1. Branch Circuits Supplied from More Than One Nominal Voltage System. Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit shall be identi‐ fied by phase or line and system at all termination, connection, and splice points in compliance with 210.5(C)(1)(a) and (b).
    1. Means of Identification. The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means.
    2. Posting of Identification Means. The method utilized for conductors originating within each branch-circuit panel‐ board or similar branch-circuit distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each branch-circuit panelboard or simi‐ lar branch-circuit distribution equipment. The label shall be of sufficient durability to withstand the environment involved andAir-conditioning and refrigerating equipment440.6, 440.31,440.32shall not be handwritten.Exception: In existing installations where a voltage system(s) alreadyexists and a different voltage system is being added, it shall be permissi‐ ble to mark only the new system voltage. Existing unidentified systems shall not be required to be identified at each termination, connection, and splice point in compliance with 210.5(C)(1)(a) and (b). Labeling shall be required at each voltage system distribution equipment to iden‐ tify that only one voltage system has been marked for a new system(s). The new system label(s) shall include the words “other unidentified systems exist on the premises.”Busways 368.17Central heating equipment other than fixed electric space-heating equipmentFixed electric heating equipment for pipelines and vesselsFixed electric space-heating equipment422.12
      427.4
      424.3Fixed outdoor electrical426.4(2) Branch Circuits Supplied from Direct-Current Systems.deicing and snow-melting
      Where a branch circuit is supplied from a dc system operatingequipment
      at more than 60 volts, each ungrounded conductor of 4 AWGInfrared lamp industrial422.48, 424.3or larger shall be identified by polarity at all termination,heating equipment
      connection, and splice points by marking tape, tagging, orMotors, motor circuits, and430other approved means; each ungrounded conductor of 6 AWGcontrollers
      or smaller shall be identified by polarity at all termination,Switchboards and408.52connection, and splice points in compliance withpanelboards
      210.5(C)(2)(a) and (b). The identification methods utilized
      for conductors originating within each branch-circuit panel‐ board or similar branch-circuit distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each branch-circuit panelboard or simi‐ lar branch-circuit distribution equipment.
      1. Positive Polarity, Sizes 6 AWG or Smaller. Where the positive polarity of a dc system does not serve as the connection point for the grounded conductor, each positive ungrounded conductor shall be identified by one of the following means:
        A continuous red outer finish
        A continuous red stripe durably marked along the conductor’s entire length on insulation of a color other than green, white, gray, or black(4) An approved permanent marking means such as sleevingor shrink-tubing that is suitable for the conductor size, at all termination, connection, and splice points, with imprinted plus signs (+) or the word POSITIVE or POS durably marked on insulation of a color other than green, white, gray, or black
        Imprinted plus signs (+) or the word POSITIVE or POS durably marked on insulation of a color other than green, white, gray, or black and repeated at intervals not exceeding 610 mm (24 in.) in accordance with 310.120(B)
      2. Negative Polarity, Sizes 6 AWG or Smaller. Where the negative polarity of a dc system does not serve as the connec‐ tion point for the grounded conductor, each negative ungroun‐ ded conductor shall be identified by one of the following means:
1. A continuous black outer finish
2. A continuous black stripe durably marked along the conductor’s entire length on insulation of a color other than green, white, gray, or red(4) An approved permanent marking means such as sleevingor shrink-tubing that is suitable for the conductor size, at all termination, connection, and splice points, with imprinted minus signs (–) or the word NEGATIVE or NEG durably marked on insulation of a color other than green, white, gray, or red
3. Imprinted minus signs (–) or the word NEGATIVE or NEG durably marked on insulation of a color other than green, white, gray, or red and repeated at intervals not exceeding 610 mm (24 in.) in accordance with 310.120(B)
Branch-Circuit Voltage Limitations. The nominal volt‐ age of branch circuits shall not exceed the values permitted by 210.6(A) through (E).
1. Occupancy Limitation. In dwelling units and guest rooms or guest suites of hotels, motels, and similar occupancies, the voltage shall not exceed 120 volts, nominal, between conduc‐ tors that supply the terminals of the following:
  1. Luminaires
  2. Cord-and-plug-connected loads 1440 volt-amperes, nomi‐ nal, or less or less than 1∕4 hp
2. 120 Volts Between Conductors. Circuits not exceeding 120 volts, nominal, between conductors shall be permitted to supply the following:
  1. The terminals of lampholders applied within their voltage ratings
  2. Auxiliary equipment of electric-discharge lampsInformational Note: See 410.137 for auxiliary equipment limita‐ tions.
  3. Cord-and-plug-connected or permanently connected utilization equipment
3. 277 Volts to Ground. Circuits exceeding 120 volts, nomi‐ nal, between conductors and not exceeding 277 volts, nominal, to ground shall be permitted to supply the following:
  1. Listed electric-discharge or listed light-emitting diode- type luminaires
  2. Listed incandescent luminaires, where supplied at 120 volts or less from the output of a stepdown autotrans‐ former that is an integral component of the luminaire and the outer shell terminal is electrically connected to a grounded conductor of the branch circuit
  3. Luminaires equipped with mogul-base screw shell lamp‐ holders
  4. Lampholders, other than the screw shell type, applied within their voltage ratings
  5. Auxiliary equipment of electric-discharge lampsInformational Note: See 410.137 for auxiliary equipment limita‐ tions.
  6. Cord-and-plug-connected or permanently connected utilization equipment
4. 600 Volts Between Conductors. Circuits exceeding277 volts, nominal, to ground and not exceeding 600 volts, nominal, between conductors shall be permitted to supply the following:
  1. The auxiliary equipment of electric-discharge lamps mounted in permanently installed luminaires where the luminaires are mounted in accordance with one of the following:
    1. Not less than a height of 6.7 m (22 ft) on poles or similar structures for the illumination of outdoor areas such as highways, roads, bridges, athletic fields, or parking lots
    2. Not less than a height of 5.5 m (18 ft) on other struc‐ tures such as tunnelsInformational Note: See 410.137 for auxiliary equipment limitations.
  2. Cord-and-plug-connected or permanently connected utilization equipment other than luminaires
  3. Luminaires powered from direct-current systems where either of the following apply:
  1. The luminaire contains a listed, dc-rated ballast thatprovides isolation between the dc power source and the lamp circuit and protection from electric shock when changing lamps.
  2. The luminaire contains a listed, dc-rated ballast and has no provision for changing lamps.
  Exception No. 1 to (B), (C), and (D): For lampholders of infrared industrial heating appliances as provided in 425.14 .Exception No. 2 to (B), (C), and (D): For railway properties as descri‐ bed in 110.19.
5. Over 600 Volts Between Conductors. Circuits exceeding 600 volts, nominal, between conductors shall be permitted to supply utilization equipment in installations where conditions of maintenance and supervision ensure that only qualified persons service the installation.
Multiple Branch Circuits. Where two or more branch circuits supply devices or equipment on the same yoke or mounting strap, a means to simultaneously disconnect the ungrounded supply conductors shall be provided at the point at which the branch circuits originate.
Ground-Fault Circuit-Interrupter Protection for Person‐ nel. Ground-fault circuit-interrupter protection for personnel shall be provided as required in 210.8(A) through (E). The ground-fault circuit interrupter shall be installed in a readily accessible location.Informational Note No. 1: See 215.9 for ground-fault circuit- interrupter protection for personnel on feeders.
Informational Note No. 2: See 422.5(A) for GFCI requirementsfor appliances.For the purposes of this section, when determining distance from receptacles the distance shall be measured as the shortest path the cord of an appliance connected to the receptacle would follow without piercing a floor, wall, ceiling, or fixed barrier, or passing through a door, doorway, or window.
1. Dwelling Units. All 125-volt, single-phase, 15- and 20- ampere receptacles installed in the locations specified in 210.8(A)(1) through (10) shall have ground-fault circuit- interrupter protection for personnel.
  1. Bathrooms
  2. Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use
  3. OutdoorsException to (3): Receptacles that are not readily accessible and are supplied by a branch circuit dedicated to electric snow-melting, deicing, or pipeline and vessel heating equipment shall be permitted to be instal‐ led in accordance with 426.28 or 427.22, as applicable.
  4. Crawl spaces — at or below grade level
  5. Unfinished portions or areas of the basement not inten‐ ded as habitable roomsException to (5): A receptacle supplying only a permanently installed fire alarm or burglar alarm system shall not be required to have ground- fault circuit-interrupter protection.Informational Note: See 760.41(B) and 760.121(B) for power supply requirements for fire alarm systems.Receptacles installed under the exception to 210.8(A)(5) shall not be considered as meeting the requirements of 210.52(G).
  6. Kitchens — where the receptacles are installed to serve the countertop surfaces
  7. Sinks — where receptacles are installed within 1.8 m (6 ft) from the top inside edge of the bowl of the sink
  8. Boathouses
  9. Bathtubs or shower stalls — where receptacles are instal‐ led within 1.8 m (6 ft) of the outside edge of the bathtub or shower stall
  10. Laundry areas
2. Other Than Dwelling Units. All single-phase receptacles rated 150 volts to ground or less, 50 amperes or less and three- phase receptacles rated 150 volts to ground or less, 100 amperes or less installed in the following locations shall have ground-fault circuit-interrupter protection for personnel.
  1. Bathrooms
  2. Kitchens
  3. RooftopsException: Receptacles on rooftops shall not be required to be readily accessible other than from the rooftop.•
  4. OutdoorsException No. 1 to (3) and (4): Receptacles that are not readily accessi‐ ble and are supplied by a branch circuit dedicated to electric snow- melting, deicing, or pipeline and vessel heating equipment shall be permitted to be installed in accordance with 426.28 or 427.22, as applicable.Exception No. 2 to (4): In industrial establishments only, where the conditions of maintenance and supervision ensure that only qualified personnel are involved, an assured equipment grounding conductor program as specified in 590.6(B)(3) shall be permitted for only those receptacle outlets used to supply equipment that would create a greater hazard if power is interrupted or having a design that is not compatible with GFCI protection.
  5. Sinks — where receptacles are installed within 1.8 m (6 ft) from the top inside edge of the bowl of the sinkException No. 1 to (5): In industrial laboratories, receptacles used to supply equipment where removal of power would introduce a greater hazard shall be permitted to be installed without GFCI protection.Exception No. 2 to (5): For receptacles located in patient bed locations of general care (Category 2) or critical care (Category 1) spaces of health care facilities other than those covered under 210.8(B)(1), GFCI protec‐ tion shall not be required.
  6. Indoor wet locations
  7. Locker rooms with associated showering facilities
    1. Crawl spaces — at or below grade level
    2. Unfinished portions or areas of the basement not inten‐ ded as habitable rooms
  8. Garages, service bays, and similar areas other than vehi‐ cle exhibition halls and showrooms
  •
3. Boat Hoists. GFCI protection shall be provided foroutlets not exceeding 240 volts that supply boat hoists installed in dwelling unit locations.
4. Kitchen Dishwasher Branch Circuit. GFCI protection shall be provided for outlets that supply dishwashers installed in dwelling unit locations.N
5. Crawl Space Lighting Outlets. GFCI protection shall be provided for lighting outlets not exceeding 120 volts installed in crawl spaces.
Circuits Derived from Autotransformers. Branch circuits shall not be derived from autotransformers unless the circuit supplied has a grounded conductor that is electrically connected to a grounded conductor of the system supplying the autotransformer.Exception No. 1: An autotransformer shall be permitted without the connection to a grounded conductor where transforming from a nomi‐ nal 208 volts to a nominal 240-volt supply or similarly from 240 volts to 208 volts.Exception No. 2: In industrial occupancies, where conditions of main‐ tenance and supervision ensure that only qualified persons service the installation, autotransformers shall be permitted to supply nominal 600-volt loads from nominal 480-volt systems, and 480-volt loads from
nominal 600-volt systems, without the connection to a similar groun‐ ded conductor.
Ungrounded Conductors Tapped from Grounded Systems. Two-wire dc circuits and ac circuits of two or more ungrounded conductors shall be permitted to be tapped from the ungrounded conductors of circuits that have a grounded neutral conductor. Switching devices in each tapped circuit shall have a pole in each ungrounded conductor. All poles of multipole switching devices shall manually switch together where such switching devices also serve as a disconnecting means as required by the following:
1. 410.93 for double-pole switched lampholders
2. 410.104(B) for electric-discharge lamp auxiliary equip‐ ment switching devices
3. 422.31(B) for an appliance
4. 424.20 for a fixed electric space-heating unit
5. 426.51 for electric deicing and snow-melting equipment
6. 430.85 for a motor controller
7. 430.103 for a motor
Branch Circuits Required. Branch circuits for lighting and for appliances, including motor-operated appliances, shall be provided to supply the loads calculated in accordance with220.10. In addition, branch circuits shall be provided for specific loads not covered by 220.10 where required elsewhere in this Code and for dwelling unit loads as specified in 210.11(C).
1. Number of Branch Circuits. The minimum number of branch circuits shall be determined from the total calculated load and the size or rating of the circuits used. In all installa‐ tions, the number of circuits shall be sufficient to supply the load served. In no case shall the load on any circuit exceed the maximum specified by 220.18.
2. Load Evenly Proportioned Among Branch Circuits. Where the load is calculated on the basis of volt-amperes per square meter or per square foot, the wiring system up to and including the branch-circuit panelboard(s) shall be provided to serve not less than the calculated load. This load shall be evenly proportioned among multioutlet branch circuits within the panelboard(s). Branch-circuit overcurrent devices and circuits shall be required to be installed only to serve the connected load.
3. Dwelling Units.
  1. Small-Appliance Branch Circuits. In addition to the number of branch circuits required by other parts of this section, two or more 20-ampere small-appliance branch circuits shall be provided for all receptacle outlets specified by 210.52(B).
  2. Laundry Branch Circuits. In addition to the number of branch circuits required by other parts of this section, at least one additional 20-ampere branch circuit shall be provided to supply the laundry receptacle outlet(s) required by 210.52(F). This circuit shall have no other outlets.
  3. Bathroom Branch Circuits. In addition to the number of branch circuits required by other parts of this section, at least one 120-volt, 20-ampere branch circuit shall be provided to supply the bathroom(s) receptacle outlet(s). Such circuits shall have no other outlets.Exception: Where the 20-ampere circuit supplies a single bathroom, outlets for other equipment within the same bathroom shall be permitted to be supplied in accordance with 210.23(A)(1) and (A)(2).N
  4. Garage Branch Circuits. In addition to the number of branch circuits required by other parts of this section, at least one 120-volt, 20-ampere branch circuit shall be installed to supply receptacle outlets in attached garages and in detached garages with electric power. This circuit shall have no other outlets.
Exception: This circuit shall be permitted to supply readily accessible outdoor receptacle outlets.
Arc-Fault Circuit-Interrupter Protection. Arc-fault circuit-interrupter protection shall be provided as required in 210.12(A), (B), and (C). The arc-fault circuit interrupter shall be installed in a readily accessible location.
1. Dwelling Units. All 120-volt, single-phase, 15- and 20- ampere branch circuits supplying outlets or devices installed in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, or similar rooms or areas shall be protected by any of the means described in 210.12(A)(1) through (6):
  1. A listed combination-type arc-fault circuit interrupter, installed to provide protection of the entire branch circuit
  2. A listed branch/feeder-type AFCI installed at the origin of the branch-circuit in combination with a listed outlet branch-circuit type arc-fault circuit interrupter installed at the first outlet box on the branch circuit. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit.
  3. A listed supplemental arc protection circuit breaker installed at the origin of the branch circuit in combina‐ tion with a listed outlet branch-circuit type arc-fault circuit interrupter installed at the first outlet box on the branch circuit where all of the following conditions are met:
    1. The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
    2. The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the first outlet shall not exceed 15.2 m (50 ft) for a 14 AWG conductor or 21.3 m (70 ft) for a 12 AWG conductor.
    3. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit.
  4. A listed outlet branch-circuit type arc-fault circuit inter‐ rupter installed at the first outlet on the branch circuit in combination with a listed branch-circuit overcurrent protective device where all of the following conditions are met:
    1. The branch-circuit wiring shall be continuous from the branch-circuit overcurrent device to the outlet branch-circuit arc-fault circuit interrupter.
    2. The maximum length of the branch-circuit wiring from the branch-circuit overcurrent device to the first outlet shall not exceed 15.2 m (50 ft) for a 14 AWG conductor or 21.3 m (70 ft) for a 12 AWG conductor.
    3. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit.
    4. The combination of the branch-circuit overcurrent device and outlet branch-circuit AFCI shall be identi‐ fied as meeting the requirements for a system combi‐ nation–type AFCI and shall be listed as such.
  5. If RMC, IMC, EMT, Type MC, or steel-armored Type AC cables meeting the requirements of 250.118, metal wire‐ ways, metal auxiliary gutters, and metal outlet and junc‐ tion boxes are installed for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, it shall be permitted to install a listed outlet branch-circuit type AFCI at the first outlet to provide protection for the remaining portion of the branch circuit.
  6. Where a listed metal or nonmetallic conduit or tubing or Type MC cable is encased in not less than 50 mm (2 in.) of concrete for the portion of the branch circuit between the branch-circuit overcurrent device and the first outlet, it shall be permitted to install a listed outlet branch- circuit type AFCI at the first outlet to provide protection for the remaining portion of the branch circuit.
  Exception: Where an individual branch circuit to a fire alarm system installed in accordance with 760.41(B) or 760.121(B) is installed in RMC, IMC, EMT, or steel-sheathed cable, Type AC or Type MC, meet‐ ing the requirements of 250.118, with metal outlet and junction boxes, AFCI protection shall be permitted to be omitted.Informational Note No. 1: For information on combination-type and branch/feeder-type arc-fault circuit interrupters, see UL 1699-2011, Standard for Arc-Fault Circuit Interrupters. For infor‐ mation on outlet branch-circuit type arc-fault circuit interupters, see UL Subject 1699A, Outline of Investigation for Outlet Branch Circuit Arc-Fault Circuit-Interrupters. For information on system combination AFCIs, see UL Subject 1699C, Outline of Investiga‐ tion for System Combination Arc-Fault Circuit Interrupters.Informational Note No. 2: See 29.6.3(5) of NFPA 72 -2013, National Fire Alarm and Signaling Code, for information related to secondary power-supply requirements for smoke alarms installed in dwelling units.Informational Note No. 3: See 760.41(B) and 760.121(B) for power-supply requirements for fire alarm systems.
2. Dormitory Units. All 120-volt, single-phase, 15- and 20- ampere branch circuits supplying outlets and devices installed in dormitory unit bedrooms, living rooms, hallways, closets, bathrooms, and similar rooms shall be protected by any of the means described in 210.12(A)(1) through (6).N
3. Guest Rooms and Guest Suites. All 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets and devi‐ ces installed in guest rooms and guest suites of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).
4. Branch Circuit Extensions or Modifications — Dwelling Units and Dormitory Units. In any of the areas specified in 210.12(A) or (B), where branch-circuit wiring is modified, replaced, or extended, the branch circuit shall be protected by one of the following:
1. A listed combination-type AFCI located at the origin of the branch circuit
2. A listed outlet branch-circuit-type AFCI located at the first receptacle outlet of the existing branch circuit
Exception: AFCI protection shall not be required where the extension of the existing conductors is not more than 1.8 m (6 ft) and does not include any additional outlets or devices.
Ground-Fault Protection of Equipment. Each branch- circuit disconnect rated 1000 A or more and installed on solidly grounded wye electrical systems of more than 150 volts to ground, but not exceeding 600 volts phase-to-phase, shall be provided with ground-fault protection of equipment in accord‐ ance with the provisions of 230.95.

Informational Note: For buildings that contain health care occu‐ pancies, see the requirements of 517.17.

Exception No. 1: The provisions of this section shall not apply to a disconnecting means for a continuous industrial process where a nonorderly shutdown will introduce additional or increased hazards.

Exception No. 2: The provisions of this section shall not apply if ground-fault protection of equipment is provided on the supply side of the branch circuit and on the load side of any transformer supplying the branch circuit.

•

Guest Rooms and Guest Suites. Guest rooms andguest suites that are provided with permanent provisions for cooking shall have branch circuits installed to meet the rules for dwelling units.
Part II. Branch-Circuit RatingsN
Rating. Branch circuits recognized by this article shall be rated in accordance with the maximum permitted ampere rating or setting of the overcurrent device. The rating for other than individual branch circuits shall be 15, 20, 30, 40, and 50 amperes. Where conductors of higher ampacity are used for any reason, the ampere rating or setting of the specified over‐ current device shall determine the circuit rating.Exception: Multioutlet branch circuits greater than 50 amperes shall be permitted to supply nonlighting outlet loads on industrial premises where conditions of maintenance and supervision ensure that only qualified persons service the equipment.
Conductors — Minimum Ampacity and Size.
1. Branch Circuits Not More Than 600 Volts.Informational Note No. 1: See 310.15 for ampacity ratings of conductors.Informational Note No. 2: See Part II of Article 430 for mini‐ mum rating of motor branch-circuit conductors.Informational Note No. 3: See 310.15(A)(3) for temperature limitation of conductors.Informational Note No. 4: Conductors for branch circuits as defined in Article 100, sized to prevent a voltage drop exceeding 3 percent at the farthest outlet of power, heating, and lighting loads, or combinations of such loads, and where the maximum total voltage drop on both feeders and branch circuits to the farthest outlet does not exceed 5 percent, provide reasonable efficiency of operation. See Informational Note No. 2 of 215.2(A)(1) for voltage drop on feeder conductors.
  1. General. Branch-circuit conductors shall have an ampacity not less than the maximum load to be served. Conductors shall
    be sized to carry not less than the larger of 210.19(A)(1)(a) or (b).
    1. Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the minimum branch-circuit conductor size shall have an allowable ampacity not less than the noncontinuous load plus 125 percent of the continuous load.
    2. The minimum branch-circuit conductor size shall have an allowable ampacity not less than the maximum load to be served after the application of any adjustment or correction factors.Exception: If the assembly, including the overcurrent devices protecting the branch circuit(s), is listed for operation at 100 percent of its rating, the allowable ampacity of the branch-circuit conductors shall be permit‐ ted to be not less than the sum of the continuous load plus the noncon‐ tinuous load.
  2. Branch Circuits with More than One Receptacle. Conduc‐ tors of branch circuits supplying more than one receptacle for cord-and-plug-connected portable loads shall have an ampacity of not less than the rating of the branch circuit.
  3. Household Ranges and Cooking Appliances. Branch- circuit conductors supplying household ranges, wall-mounted ovens, counter-mounted cooking units, and other household cooking appliances shall have an ampacity not less than the rating of the branch circuit and not less than the maximum load to be served. For ranges of 83∕4 kW or more rating, the minimum branch-circuit rating shall be 40 amperes.Exception No. 1: Conductors tapped from a 50-ampere branch circuit supplying electric ranges, wall-mounted electric ovens, and counter- mounted electric cooking units shall have an ampacity of not less than 20 amperes and shall be sufficient for the load to be served. These tap conductors include any conductors that are a part of the leads supplied with the appliance that are smaller than the branch-circuit conductors. The taps shall not be longer than necessary for servicing the appliance.Exception No. 2: The neutral conductor of a 3-wire branch circuit supplying a household electric range, a wall-mounted oven, or a counter-mounted cooking unit shall be permitted to be smaller than the ungrounded conductors where the maximum demand of a range of 83∕4-kW or more rating has been calculated according to Column C of Table 220.55, but such conductor shall have an ampacity of not less than 70 percent of the branch-circuit rating and shall not be smaller than 10 AWG.
  4. Other Loads. Branch-circuit conductors that supply loads other than those specified in 210.3 and other than cooking appliances as covered in 210.19(A)(3) shall have an ampacity sufficient for the loads served and shall not be smaller than 14 AWG.Exception No. 1: Tap conductors shall have an ampacity sufficient for the load served. In addition, they shall have an ampacity of not less than 15 for circuits rated less than 40 amperes and not less than 20 for circuits rated at 40 or 50 amperes and only where these tap conductors supply any of the following loads:
    1. Individual lampholders or luminaires with taps extending not longer than 450 mm (18 in.) beyond any portion of the lampholder or luminaire
    2. A luminaire having tap conductors as provided in 410.117
    3. Individual outlets, other than receptacle outlets, with taps not over 450 mm (18 in.) long
    4. Infrared lamp industrial heating appliances
    5. Nonheating leads of deicing and snow-melting cables and mats
  Exception No. 2: Fixture wires and flexible cords shall be permitted to be smaller than 14 AWG as permitted by 240.5.
2. Branch Circuits Over 600 Volts. The ampacity of conduc‐ tors shall be in accordance with 310.15 and 310.60, as applica‐ ble. Branch-circuit conductors over 600 volts shall be sized in accordance with 210.19(B)(1) or (B)(2).
  1. General. The ampacity of branch-circuit conductors shall not be less than 125 percent of the designed potential load of utilization equipment that will be operated simultaneously.
  2. Supervised Installations. For supervised installations, branch-circuit conductor sizing shall be permitted to be deter‐ mined by qualified persons under engineering supervision. Supervised installations are defined as those portions of a facility where both of the following conditions are met:
1. Conditions of design and installation are provided under engineering supervision.
2. Qualified persons with documented training and experi‐ ence in over 600-volt systems provide maintenance, moni‐ toring, and servicing of the system.
Overcurrent Protection. Branch-circuit conductors and equipment shall be protected by overcurrent protective devices that have a rating or setting that complies with 210.20(A) through (D).
1. Continuous and Noncontinuous Loads. Where a branch circuit supplies continuous loads or any combination of contin‐ uous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus 125 percent of the continuous load.Exception: Where the assembly, including the overcurrent devices protecting the branch circuit(s), is listed for operation at 100 percent of its rating, the ampere rating of the overcurrent device shall be permitted to be not less than the sum of the continuous load plus the noncontinu‐ ous load.
2. Conductor Protection. Conductors shall be protected in accordance with 240.4. Flexible cords and fixture wires shall be protected in accordance with 240.5.
3. Equipment. The rating or setting of the overcurrent protective device shall not exceed that specified in the applica‐ ble articles referenced in Table 240.3 for equipment.
4. Outlet Devices. The rating or setting shall not exceed that specified in 210.21 for outlet devices.
Outlet Devices. Outlet devices shall have an ampere rating that is not less than the load to be served and shall comply with 210.21(A) and (B).
1. Lampholders. Where connected to a branch circuit having a rating in excess of 20 amperes, lampholders shall be of the heavy-duty type. A heavy-duty lampholder shall have a rating of not less than 660 watts if of the admedium type, or not less than 750 watts if of any other type.
2. Receptacles.
  1. Single Receptacle on an Individual Branch Circuit. A single receptacle installed on an individual branch circuit shall have an ampere rating not less than that of the branch circuit.
    Exception No. 1: A receptacle installed in accordance with 430.81(B).Exception No. 2: A receptacle installed exclusively for the use of a cord- and-plug-connected arc welder shall be permitted to have an ampere rating not less than the minimum branch-circuit conductor ampacity determined by 630.11(A) for arc welders.Informational Note: See the definition of receptacle in Arti‐ cle 100.
  2. Total Cord-and-Plug-Connected Load. Where connected to a branch circuit supplying two or more receptacles or outlets, a receptacle shall not supply a total cord-and-plug- connected load in excess of the maximum specified in Table 210.21(B)(2).
  3. Receptacle Ratings. Where connected to a branch circuit supplying two or more receptacles or outlets, receptacle ratings shall conform to the values listed in Table 210.21(B)(3), or, where rated higher than 50 amperes, the receptacle rating shall not be less than the branch-circuit rating.Exception No. 1: Receptacles installed exclusively for the use of one or more cord-and-plug-connected arc welders shall be permitted to have ampere ratings not less than the minimum branch-circuit conductor ampacity determined by 630.11(A) or (B) for arc welders.Exception No. 2: The ampere rating of a receptacle installed for electric discharge lighting shall be permitted to be based on 410.62(C).
  4. Range Receptacle Rating. The ampere rating of a range receptacle shall be permitted to be based on a single range demand load as specified in Table 220.55.
Permissible Loads, Individual Branch Circuits. An individual branch circuit shall be permitted to supply any load for which it is rated, but in no case shall the load exceed the branch-circuit ampere rating.
Permissible Loads, Multiple-Outlet Branch Circuits. In no case shall the load exceed the branch-circuit ampere rating. A branch circuit supplying two or more outlets or recep‐ tacles shall supply only the loads specified according to its size as specified in 210.23(A) through (D) and as summarized in
and Table 210.24.

Table 210.21(B)(2) Maximum Cord-and-Plug-Connected Load to Receptacle

15- and 20-Ampere Branch Circuits. A 15- or 20-ampere branch circuit shall be permitted to supply lighting units or other utilization equipment, or a combination of both, and shall comply with 210.23(A)(1) and (A)(2).Exception: The small-appliance branch circuits, laundry branch circuits, and bathroom branch circuits required in a dwelling unit(s) by 210.11(C)(1), (C)(2), and (C)(3) shall supply only the receptacle outlets specified in that section.
1. Cord-and-Plug-Connected Equipment Not Fastened in Place. The rating of any one cord-and-plug-connected utiliza‐ tion equipment not fastened in place shall not exceed 80 percent of the branch-circuit ampere rating.
2. Utilization Equipment Fastened in Place. The total rating of utilization equipment fastened in place, other than lumin‐ aires, shall not exceed 50 percent of the branch-circuit ampere rating where lighting units, cord-and-plug-connected utilization equipment not fastened in place, or both, are also supplied.
30-Ampere Branch Circuits. A 30-ampere branch circuit shall be permitted to supply fixed lighting units with heavy-duty lampholders in other than a dwelling unit(s) or utilization equipment in any occupancy. A rating of any one cord-and- plug-connected utilization equipment shall not exceed 80 percent of the branch-circuit ampere rating.
40- and 50-Ampere Branch Circuits. A 40- or 50-ampere branch circuit shall be permitted to supply cooking appliances that are fastened in place in any occupancy. In other than dwelling units, such circuits shall be permitted to supply fixed lighting units with heavy-duty lampholders, infrared heating units, or other utilization equipment.
Branch Circuits Larger Than 50 Amperes. Branch circuits larger than 50 amperes shall supply only nonlighting outlet loads.

Branch-Circuit Requirements — Summary. The requirements for circuits that have two or more outlets or receptacles, other than the receptacle circuits of 210.11(C)(1), (C)(2), and (C)(3), are summarized in Table 210.24. This table provides only a summary of minimum requirements. See 210.19, 210.20, and 210.21 for the specific requirements apply‐ ing to branch circuits.
Branch Circuits in Buildings with More Than One Occupancy.

Dwelling Unit Branch Circuits. Branch circuits in eachCircuit Rating (Amperes)Receptacle Rating (Amperes)Maximum Load (Amperes)dwelling unit shall supply only loads within that dwelling unit or loads associated only with that dwelling unit.15 or 20 15 1220 20 1630 30 24
Table 210.21(B)(3) Receptacle Ratings for Various Size Circuits
Circuit Rating(Amperes) Receptacle Rating (Amperes)15 Not over 1520 15 or 2030 3040 40 or 5050 50
Common Area Branch Circuits. Branch circuits installed for the purpose of lighting, central alarm, signal, communica‐ tions, or other purposes for public or common areas of a two- family dwelling, a multifamily dwelling, or a multi-occupancy building shall not be supplied from equipment that supplies an individual dwelling unit or tenant space.

Part III. Required Outlets

210.50 General. Receptacle outlets shall be installed as speci‐ fied in 210.52 through 210.64.

Informational Note: See Informative Annex J for information regarding ADA accessibility design.

Table 210.24 Summary of Branch-Circuit Requirements

Circuit Rating 15 A 20 A 30 A 40 A 50 A

Conductors (min. size):

Circuit wires1	14	12	10	8	6
TapsFixture wires and cords— see 240.5	14	14	14	12	12
Overcurrent Protection	15 A	20 A	30 A	40 A	50 A
Outlet devices: Lampholders	Any type	Any type	Heavy duty	Heavy duty	Heavy duty
permittedReceptacle rating2	15 max. A	15 or 20 A	30 A	40 or 50 A	50 A
Maximum Load	15 A	20 A	30 A	40 A	50 A
Permissible load	See 210.23(A)	See 210.23(A)	See 210.23(B)	See 210.23(C)	See 210.23(C)

1These gauges are for copper conductors.

2For receptacle rating of cord-connected electric-discharge luminaires, see 410.62(C).

Cord Pendants. A cord connector that is supplied by a permanently connected cord pendant shall be considered a receptacle outlet.
Cord Connections. A receptacle outlet shall be installed wherever flexible cords with attachment plugs are used. Where flexible cords are permitted to be permanently connected, receptacles shall be permitted to be omitted for such cords.
Appliance Receptacle Outlets. Appliance receptacle outlets installed in a dwelling unit for specific appliances, such as laundry equipment, shall be installed within 1.8 m (6 ft) of the intended location of the appliance.

210.52 Dwelling Unit Receptacle Outlets. This section provides requirements for 125-volt, 15- and 20-ampere recepta‐ cle outlets. The receptacles required by this section shall be in addition to any receptacle that is:

Part of a luminaire or appliance, or
Controlled by a wall switch in accordance with 210.70(A)(1), Exception No. 1, or
Located within cabinets or cupboards, or
Located more than 1.7 m (51∕2 ft) above the floor

Permanently installed electric baseboard heaters equipped with factory-installed receptacle outlets or outlets provided as a separate assembly by the manufacturer shall be permitted as the required outlet or outlets for the wall space utilized by such permanently installed heaters. Such receptacle outlets shall not be connected to the heater circuits.

Informational Note: Listed baseboard heaters include instruc‐ tions that may not permit their installation below receptacle outlets.

General Provisions. In every kitchen, family room, dining room, living room, parlor, library, den, sunroom, bedroom, recreation room, or similar room or area of dwelling units, receptacle outlets shall be installed in accordance with the general provisions specified in 210.52(A)(1) through (A)(4).
1. Spacing. Receptacles shall be installed such that no point measured horizontally along the floor line of any wall space is more than 1.8 m (6 ft) from a receptacle outlet.
2. Wall Space. As used in this section, a wall space shall include the following:
  1. Any space 600 mm (2 ft) or more in width (including space measured around corners) and unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets that do not have countertops or simi‐ lar work surfaces
  2. The space occupied by fixed panels in walls, excluding sliding panels
  3. The space afforded by fixed room dividers, such as free‐ standing bar-type counters or railings
  1. Floor Receptacles. Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets unless located within 450 mm (18 in.) of the wall.
  2. Countertop and Similar Work Surface Receptacle Outlets. Receptacles installed for countertop and similar work surfaces as specified in 210.52(C) shall not be considered as the recep‐ tacle outlets required by 210.52(A).
Small Appliances.
1. Receptacle Outlets Served. In the kitchen, pantry, break‐ fast room, dining room, or similar area of a dwelling unit, the two or more 20-ampere small-appliance branch circuits required by 210.11(C)(1) shall serve all wall and floor recepta‐ cle outlets covered by 210.52(A), all countertop outlets covered by 210.52(C), and receptacle outlets for refrigeration equip‐ ment.Exception No. 1: In addition to the required receptacles specified by 210.52, switched receptacles supplied from a general-purpose branch circuit as defined in 210.70(A)(1), Exception No. 1, shall be permitted.Exception No. 2: In addition to the required receptacles specified by 210.52, a receptacle outlet to serve a specific appliance shall be permit‐ ted to be supplied from an individual branch circuit rated 15 amperes or greater.
2. No Other Outlets. The two or more small-appliance branch circuits specified in 210.52(B)(1) shall have no other outlets.
  Exception No. 1: A receptacle installed solely for the electrical supply to and support of an electric clock in any of the rooms specified in 210.52(B)(1).Exception No. 2: Receptacles installed to provide power for supplemen‐ tal equipment and lighting on gas-fired ranges, ovens, or counter- mounted cooking units.
3. Kitchen Receptacle Requirements. Receptacles installed in a kitchen to serve countertop surfaces shall be supplied by not fewer than two small-appliance branch circuits, either or both of which shall also be permitted to supply receptacle outlets in the same kitchen and in other rooms specified in 210.52(B)(1). Additional small-appliance branch circuits shall be permitted to supply receptacle outlets in the kitchen and other rooms specified in 210.52(B)(1). No small-appliance branch circuit shall serve more than one kitchen.
Countertops and Work Surfaces. In kitchens, pantries, breakfast rooms, dining rooms, and similar areas of dwelling units, receptacle outlets for countertop and work surfaces shall be installed in accordance with 210.52(C)(1) through (C)(5).
1. Wall Countertop and Work Surface. A receptacle outlet shall be installed at each wall countertop and work surface that is 300 mm (12 in.) or wider. Receptacle outlets shall be instal‐ led so that no point along the wall line is more than 600 mm (24 in.) measured horizontally from a receptacle outlet in that space.Exception: Receptacle outlets shall not be required on a wall directly behind a range, counter-mounted cooking unit, or sink in the installa‐ tion described in Figure 210.52(C)(1).
2. Island Countertop Spaces. At least one receptacle shall be installed at each island countertop space with a long dimension of 600 mm (24 in.) or greater and a short dimension of 300 mm (12 in.) or greater.
3. Peninsular Countertop Spaces. At least one receptacle outlet shall be installed at each peninsular countertop long dimension space with a long dimension of 600 mm (24 in.) or greater and a short dimension of 300 mm (12 in.) or greater. A peninsular countertop is measured from the connected perpendicular wall.
4. Separate Spaces. Countertop spaces separated by range‐ tops, refrigerators, or sinks shall be considered as separate countertop spaces in applying the requirements of 210.52(C)(1). If a range, counter-mounted cooking unit, or sink is installed in an island or peninsular countertop and the depth of the countertop behind the range, counter-mounted cooking unit, or sink is less than 300 mm (12 in.), the range, counter-mounted cooking unit, or sink shall be considered to divide the countertop space into two separate countertop spaces. Each separate countertop space shall comply with the applicable requirements in 210.52(C).
5. Receptacle Outlet Location. Receptacle outlets shall be located on or above, but not more than 500 mm (20 in.) above, the countertop or work surface. Receptacle outlet assemblies listed for use in countertops or work surfaces shall be permit‐ ted to be installed in countertops or work surfaces. Receptacle outlets rendered not readily accessible by appliances fastened in place, appliance garages, sinks, or rangetops as covered in 210.52(C)(1), Exception, or appliances occupying dedicated space shall not be considered as these required outlets.
  
  Outlet within 600 mm (24 in.)Space exempt from wallline if X < 300 mm (12 in.) Outlet within 600 mm (24 in.)XRange, counter-mounted cooking unit extending from face of counter
  
  Space exempt from wall line Outlet within 600 mm (24 in.) if X < 450 mm (18 in.)XOutlet within600 mm(24 in.)Range, counter-mounted cooking unit mounted in corner
  FIGURE 210.52(C)(1) Determination of Area Behind a Range, Counter-Mounted Cooking Unit, or Sink.
  Informational Note: See 406.5(E) and 406.5(G) for require‐ ments for installation of receptacles in countertops and 406.5(F) and 406.5(G) for requirements for installation of receptacles in work surfaces.Exception to (5): To comply with the following conditions (1) and (2), receptacle outlets shall be permitted to be mounted not more than 300 mm (12 in.) below the countertop or work surface. Receptacles mounted below a countertop or work surface in accordance with this exception shall not be located where the countertop or work surface extends more than 150 mm (6 in.) beyond its support base.
  1. Construction for the physically impaired
  2. On island and peninsular countertops or work surface where the surface is flat across its entire surface (no backsplashes, dividers, etc.) and there are no means to mount a receptacle within 500 mm (20 in.) above the countertop or work surface, such as an overhead cabinet
Bathrooms. At least one receptacle outlet shall be instal‐ led in bathrooms within 900 mm (3 ft) of the outside edge of each basin. The receptacle outlet shall be located on a wall or partition that is adjacent to the basin or basin countertop, loca‐
ted on the countertop, or installed on the side or face of the basin cabinet. In no case shall the receptacle be located more than 300 mm (12 in.) below the top of the basin or basin coun‐ tertop. Receptacle outlet assemblies listed for use in counter‐ tops shall be permitted to be installed in the countertop.Informational Note: See 406.5(E) and 406.5(G) for require‐ ments for installation of receptacles in countertops.
Outdoor Outlets. Outdoor receptacle outlets shall be installed in accordance with 210.52(E)(1) through (E)(3).Informational Note: See 210.8(A)(3).
1. One-Family and Two-Family Dwellings. For a one-family dwelling and each unit of a two-family dwelling that is at grade level, at least one receptacle outlet readily accessible from grade and not more than 2.0 m (6 1∕2 ft) above grade level shall be installed at the front and back of the dwelling.
2. Multifamily Dwellings. For each dwelling unit of a multi‐ family dwelling where the dwelling unit is located at grade level and provided with individual exterior entrance/egress, at least one receptacle outlet readily accessible from grade and not more than 2.0 m (61∕2 ft) above grade level shall be installed.
3. Balconies, Decks, and Porches. Balconies, decks, and porches that are attached to the dwelling unit and are accessi‐ ble from inside the dwelling unit shall have at least one recep‐ tacle outlet accessible from the balcony, deck, or porch. The receptacle outlet shall not be located more than 2.0 m (61∕2 ft) above the balcony, deck, or porch walking surface.
Laundry Areas. In dwelling units, at least one receptacle outlet shall be installed in areas designated for the installation of laundry equipment.Exception No. 1: A receptacle for laundry equipment shall not be required in a dwelling unit of a multifamily building where laundry facilities are provided on the premises for use by all building occupants.Exception No. 2: A receptacle for laundry equipment shall not be required in other than one-family dwellings where laundry facilities are not to be installed or permitted.
Basements, Garages, and Accessory Buildings. For one- and two- family dwellings, at least one receptacle outlet shall be installed in the areas specified in 210.52(G)(1) through (3). These receptacles shall be in addition to receptacles required for specific equipment.
1. Garages. In each attached garage and in each detached garage with electric power, at least one receptacle outlet shall be installed in each vehicle bay and not more than 1.7 m (51∕2 ft) above the floor.
2. Accessory Buildings. In each accessory building with elec‐ tric power.
3. Basements. In each separate unfinished portion of a base‐ ment.
Hallways. In dwelling units, hallways of 3.0 m (10 ft) or more in length shall have at least one receptacle outlet.As used in this subsection, the hallway length shall be consid‐ ered the length along the centerline of the hallway without passing through a doorway.
Foyers. Foyers that are not part of a hallway in accordance with 210.52(H) and that have an area that is greater than

5.6 m2 (60 ft2) shall have a receptacle(s) located in each wall space 900 mm (3 ft) or more in width. Doorways, door-side windows that extend to the floor, and similar openings shall not be considered wall space.

210.60 Guest Rooms, Guest Suites, Dormitories, and Similar Occupancies.

General. Guest rooms or guest suites in hotels, motels, sleeping rooms in dormitories, and similar occupancies shall have receptacle outlets installed in accordance with 210.52(A) and (D). Guest rooms or guest suites provided with permanent provisions for cooking shall have receptacle outlets installed in accordance with all of the applicable rules in 210.52.
Receptacle Placement. In applying the provisions of 210.52(A), the total number of receptacle outlets shall not be less than the minimum number that would comply with the provisions of that section. These receptacle outlets shall be permitted to be located conveniently for permanent furniture layout. At least two receptacle outlets shall be readily accessible. Where receptacles are installed behind the bed, the receptacle shall be located to prevent the bed from contacting any attach‐ ment plug that may be installed or the receptacle shall be provided with a suitable guard.

Show Windows. At least one 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed within 450 mm (18 in.) of the top of a show window for each 3.7 linear m (12 linear ft) or major fraction thereof of show window area measured horizontally at its maximum width.
Heating, Air-Conditioning, and Refrigeration Equip‐ ment Outlet. A 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed at an accessible location for the servicing of heating, air-conditioning, and refrigeration equipment. The receptacle shall be located on the same level and within 7.5 m (25 ft) of the heating, air-conditioning, and refrigeration equipment. The receptacle outlet shall not be connected to the load side of the equipment disconnecting means.Informational Note: See 210.8 for ground-fault circuit- interrupter requirements.Exception: A receptacle outlet shall not be required at one- and two- family dwellings for the service of evaporative coolers.
Electrical Service Areas. At least one 125-volt, single- phase, 15- or 20-ampere-rated receptacle outlet shall be instal‐ led in an accessible location within 7.5 m (25 ft) of the indoor electrical service equipment. The required receptacle outlet shall be located within the same room or area as the service equipment.

Exception No. 1: The receptacle outlet shall not be required to be instal‐ led in one- and two-family dwellings.

Exception No. 2: Where the service voltage is greater than 120 volts to

ground, a receptacle outlet shall not be required for services dedicated to equipment covered in Articles 675 and 682.

Lighting Outlets Required. Lighting outlets shall be installed where specified in 210.70(A), (B), and (C).
1. Dwelling Units. In dwelling units, lighting outlets shall be installed in accordance with 210.70(A)(1), (A)(2), and (A)(3).
  1. Habitable Rooms. At least one wall switch–controlled lighting outlet shall be installed in every habitable room, kitchen, and bathroom.Exception No. 1: In other than kitchens and bathrooms, one or more receptacles controlled by a wall switch shall be permitted in lieu of light‐ ing outlets.Exception No. 2: Lighting outlets shall be permitted to be controlled by occupancy sensors that are (1) in addition to wall switches or (2) loca‐ ted at a customary wall switch location and equipped with a manual override that will allow the sensor to function as a wall switch.
  2. Additional Locations. Additional lighting outlets shall be installed in accordance with the following:
    1. At least one wall switch–controlled lighting outlet shall be installed in hallways, stairways, attached garages, and detached garages with electric power.
    2. For dwelling units, attached garages, and detached garages with electric power, at least one wall switch– controlled lighting outlet shall be installed to provide illu‐ mination on the exterior side of outdoor entrances or exits with grade-level access. A vehicle door in a garage shall not be considered as an outdoor entrance or exit.
    3. Where one or more lighting outlet(s) are installed for interior stairways, there shall be a wall switch at each floor level, and landing level that includes an entryway, to control the lighting outlet(s) where the stairway between floor levels has six risers or more.Exception to (A)(2)(1), (A)(2)(2), and (A)(2)(3): In hallways, in stairways, and at outdoor entrances, remote, central, or automatic control of lighting shall be permitted.
    4. Lighting outlets controlled in accordance with 210.70(A)(2)(3) shall not be controlled by use of dimmer switches unless they provide the full range of dimming control at each location.
    (3) Storage or Equipment Spaces. For attics, underfloor spaces, utility rooms, and basements, at least one lighting outlet containing a switch or controlled by a wall switch shall be instal‐ led where these spaces are used for storage or contain equip‐ ment requiring servicing. At least one point of control shall be at the usual point of entry to these spaces. The lighting outlet shall be provided at or near the equipment requiring servicing.
2. Guest Rooms or Guest Suites. In hotels, motels, or similar occupancies, guest rooms or guest suites shall have at least one wall switch–controlled lighting outlet installed in every habita‐ ble room and bathroom.Exception No. 1: In other than bathrooms and kitchens where provided, one or more receptacles controlled by a wall switch shall be permitted in lieu of lighting outlets.Exception No. 2: Lighting outlets shall be permitted to be controlled by occupancy sensors that are (1) in addition to wall switches or (2) loca‐ ted at a customary wall switch location and equipped with a manual override that allows the sensor to function as a wall switch.
3. All Occupancies. For attics and underfloor spaces, utility rooms, and basements, at least one lighting outlet containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requir‐ ing servicing. At least one point of control shall be at the usual point of entry to these spaces. The lighting outlet shall be provided at or near the equipment requiring servicing.
Meeting Rooms.

General. Each meeting room of not more than 93 m2 (1000 ft2) in other than dwelling units shall have outlets for nonlocking-type, 125-volt, 15- or 20-ampere receptacles. The outlets shall be installed in accordance with 210.71(B). Where a room or space is provided with movable partition(s), each room size shall be determined with the partition in the position that results in the smallest size meeting room.Informational Note No. 1: For the purposes of this section, meeting rooms are typically designed or intended for the gath‐ ering of seated occupants for such purposes as conferences, deliberations, or similar purposes, where portable electronic equipment such as computers, projectors, or similar equipment is likely to be used.Informational Note No. 2: Examples of rooms that are not meet‐ ing rooms include auditoriums, schoolrooms, and coffee shops.
Receptacle Outlets Required. The total number of recep‐ tacle outlets, including floor outlets and receptacle outlets in fixed furniture, shall not be less than as determined in (1) and (2). These receptacle outlets shall be permitted to be located as determined by the designer or building owner.
1. Receptacle Outlets in Fixed Walls. Receptacle outlets shall be installed in accordance with 210.52(A)(1) through (A)(4).
2. Floor Receptacle Outlets. A meeting room that is at least

3.7 m (12 ft) wide and that has a floor area of at least 20 m2 (215 ft2) shall have at least one receptacle outlet located in the floor at a distance not less than 1.8 m (6 ft) from any fixed wall for each 20 m2 (215 ft2) or major portion of floor space.

Informational Note No. 1: See Section 314.27(B) for floor boxes used for receptacles located in the floor.

Informational Note No. 2: See Article 518 for assembly occupan‐ cies designed for 100 or more persons.

Last posts