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l 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 ra...

l 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 Article 100 for the definition of receptacle. ENHANCED CONTENT Collapse A single receptacle installed on an individual branch circuit must have an ampere rating not less than that of the branch circuit. For example, a single receptacle on a 20-ampere individual branch circuit must be rated at 20 amperes in accordance with 210.21(B)(1); however, two or more 15-ampere single receptacles or a 15-ampere duplex receptacle are permitted on a 20- ampere branch circuit in accordance with 210.21(B)(3). (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). Table 210.21(B)(2) Maximum Cord-and-Plug-Connected Load to Receptacle Circuit Rating (Amperes) Receptacle Rating (Amperes) Maximum Load (Amperes) 15 or 20 15 12 20 20 16 30 30 24 (3) Receptacle Ratings. Where connected to a branch circuit supplying two or more receptacles or outlets, receptacle ratings shall not be less than 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 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). Table 210.21(B)(3) Receptacle Ratings for Circuits Serving More Than One Receptacle or Receptacle Outlet Circuit Rating (Amperes) Receptacle Rating (Amperes) 15 15 20 15 or 20 30 30 40 40 or 50 50 50 (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. 210.22 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. 210.23 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 receptacles shall supply only the loads specified according to its size in accordance with 210.23(A) through (E) and as summarized in 210.24. (A) 10-Ampere Branch Circuits. A 10-ampere branch circuit shall comply with the requirements of 210.23(A)(1) and (A)(2). (1) Loads Permitted for 10-Ampere Branch Circuits. A 10-ampere branch circuit shall be permitted to supply one or more of the following: * (1) Lighting outlets * (2) Dwelling unit exhaust fans on bathroom or laundry room lighting circuits * (3) A gas fireplace unit supplied by an individual branch circuit (2) Loads Not Permitted for 10-Ampere Branch Circuits. A 10-ampere branch circuit shall not supply any of the following: * (1) Receptacle outlets * (2) Fixed appliances, except as permitted for individual branch circuits * (3) Garage door openers * (4) Laundry equipment (B) 15- and 20-Ampere Branch Circuits. A 15- or 20-ampere branch circuit shall be permitted to supply lighting outlets, lighting units, or other utilization equipment, or any combination of them, and shall comply with 210.23(B)(1) and (B)(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 utilization 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 luminaires, 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. ENHANCED CONTENT Collapse A 15- or 20-ampere branch circuit supplying lighting outlets may also supply utilization equipment fastened in place, such as a dishwasher. The utilization equipment load, whether direct wired or cord-and-plug-connected, must not exceed 50 percent of the branch-circuit ampere rating (7.5 amperes on a 15- ampere circuit and 10 amperes on a 20-ampere circuit). The requirement does not apply to a branch circuit that supplies only fastened-in-place utilization equipment. For example, on a 20-ampere branch circuit that supplies a waste disposer and a dishwasher, neither appliance is restricted to 50 percent (10 amperes) of the branch-circuit rating. The combined load of the two appliances cannot exceed 20 amperes. (C) 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. The rating of any one cord-and-plug-connected utilization equipment shall not exceed 80 percent of the branch-circuit ampere rating. (D) 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. (E) Branch Circuits Larger Than 50 Amperes. Branch circuits larger than 50 amperes shall supply only nonlighting outlet loads. ENHANCED CONTENT Collapse See also 210.18, Exception No. 1, and the commentary regarding multioutlet branch circuits greater than 50 amperes that are permitted to supply nonlighting outlet loads at industrial premises. 210.24 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(1) for copper conductors and Table 210.24(2) for aluminum and copper-clad aluminum conductors. Table 210.24(1) and Table 210.24(2) provide only a summary of minimum requirements. See 210.19, 210.20, and 210.21 for the specific requirements applying to branch circuits. Table 210.24(1) Summary of Branch-Circuit Requirements - Copper Conductors Circuit Rating 10 A 15 A 20 A 30 A 40 A 50 A Conductors (min. size): Circuit wires 14 14 12 10 8 6 Taps 14 14 14 14 12 12 Fixture wires and cords See 240.5. Overcurrent Protection 10 A 15 A 20 A 30 A 40 A 50 A Outlet devices: Lampholders permitted Any type Any type Any type Heavy duty Heavy duty Heavy duty Receptacle rating1 Not applicable2 15 max. A 15 A or 20 A 30 A 40 A or 50 A 50 A Maximum Load 10 A 15 A 20 A 30 A 40 A 50 A Permissible load See 210.23(A). See 210.23(B). See 210.23(B). See 210.23(C). See 210.23(D). See 210.23(D). 1 For receptacle rating of cord-connected electric-discharge luminaires, see 410.62(C). 2Branch circuits rated 10-amperes shall not supply receptacle outlets. Table 210.24(2) Summary of Branch-Circuit Requirements - Aluminum and Copper-Clad Aluminum Conductors Circuit Rating 10 A 15 A 20 A 30 A 40 A 50 A Conductors (min. size): Circuit wires 12 12 10 8 6 4 Taps 12 12 12 12 10 10 Fixture wires and cords See 240.5. Overcurrent Protection 10 A 15 A 20 A 30 A 40 A 50 A Outlet devices: Lampholders permitted Any type Any type Any type Heavy duty Heavy duty Heavy duty Receptacle rating1 Not applicable2 15 max. A 15 A or 20 A 30 A 40 A or 50 A 50 A Maximum Load 10 A 15 A 20 A 30 A 40 A 50 A Permissible load See 210.23(A). See 210.23(B). See 210.23(B). See 210.23(C). See 210.23(D). See 210.23(D). 1For receptacle rating of cord-connected electric-discharge luminaires, see 410.62(C). 2Branch circuits rated 10-amperes shall not supply receptacle outlets. ENHANCED CONTENT Collapse Table 210.24(1) summarizes the general branch-circuit requirements where two or more outlets are supplied by copper conductors. Table 210.24(2) summarizes the general branch-circuit requirements where two or more outlets are supplied by aluminum or copper-clad conductors. Small appliance, laundry, and bathroom circuits supplying receptacles are not included, and no allowance is made for conditions of use or adjustments. The circuit rating is determined by the rating of the overcurrent device based on 210.18. The tap conductor ampacity is governed by Exception No. 1 of 210.19(D). The circuit conductor and tap conductor size are directly from the 60øC column of Table 310.16. The receptacle ratings are from Table 210.21(B)(3). 210.25 Branch Circuits in Buildings with More Than One Occupancy. (A) Dwelling Unit Branch Circuits. Branch circuits in each dwelling unit shall supply only loads within that dwelling unit or loads associated only with that dwelling unit. (B) Common Area Branch Circuits. Branch circuits installed for lighting, central alarm, signal, communications, 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. Informational Note: Examples of public or common areas include, but are not limited to, lobbies, corridors, stairways, laundry rooms, roofs, elevators, washrooms, store rooms, driveways (parking), and mechanical rooms. ENHANCED CONTENT Collapse In addition to prohibiting branch circuits from feeding more than one dwelling unit, 210.25 also prohibits an individual dwelling unit branch circuit from supplying shared systems, equipment, or common lighting. Common area circuits in occupancies other than dwelling units are subject to this requirement. “House load” branch circuits must be supplied from equipment that does not directly supply branch circuits for an individual occupancy or tenant space. This requirement permits access to the branch-circuit disconnecting means without the need to enter the space of any tenants. The requirement also prevents a tenant from turning off important circuits that could affect other tenants. Part III. Required Outlets 210.50 Receptacle Outlets. Receptacle outlets shall be instal?led as specified in 210.52 through 210.65. Informational Note: See Informative Annex J for information regarding ADA accessibility design. (A) Cord Pendants. A cord connector that is supplied by a permanently connected cord pendant shall be considered a receptacle outlet. (B) 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. (C) 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. ENHANCED CONTENT Collapse See also 210.52(F) and 210.11(C)(2)ÿfor requirements on laundry receptacle outlets and branch circuits. 210.52 Dwelling Unit Receptacle Outlets. This section provides requirements for 125-volt, 15- and 20-ampere receptacle outlets. The receptacles required by this section shall be in addition to any receptacle that is as follows: * (1) Part of a luminaire or appliance, or * (2) Controlled by a listed wall-mounted control device in accordance with 210.70(A)(1), Exception No. 1, or * (3) Located within cabinets or cupboards, or * (4) 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 instructions that may not permit their installation below receptacle outlets. ENHANCED CONTENT Collapse An outlet containing a duplex receptacle that is wired so that only one of the receptacles is controlled by a wall switch can be used to meet the receptacle outlet spacing requirement. However, if both halves are controlled by a wall switch or other wall-mounted control device, such as an occupancy sensor, an additional unswitched receptacle has to be installed to meet the receptacle outlet spacing requirement. Where both halves of the duplex receptacle are controlled by a wall switch, the occupant could run an extension cord from a receptacle that is not controlled by a switch to an appliance that requires continuous power. (A) 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. ENHANCED CONTENT Collapse Receptacle outlets are to be installed so that an appliance or lamp with an attached flexible cord can be placed anywhere in the room near a wall and be within 6 feet of a receptacle, minimizing the need for occupants to use extension cords. The receptacle layout can be designed for intended utilization equipment or practical room use. For example, receptacles in a family room that are intended to serve home entertainment equipment can be grouped or placed for convenience. Receptacle outlets intended for window- type holiday lighting can be placed under windows. No point in any wall space is permitted to be more than 6 feet from a receptacle outlet, even where more receptacle outlets than the minimum required are installed in the room. (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, stationary appliances, and fixed cabinets that do not have countertops or similar work surfaces * (2) The space occupied by fixed panels in walls, excluding sliding panels * (3) The space afforded by fixed room dividers, such as freestanding bar- type counters or railings (3) 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. ENHANCED CONTENT Collapse Any wall space that is unbroken along the floor line by doorways, fireplaces, archways, and similar openings must be included in the measurement. The wall space may include two or more walls of a room (around corners) as illustrated below. Fixed room dividers, such as bar-type counters and railings, are required to be included in the 6-foot measurement. Fixed glass panels in exterior walls are counted as wall space, and a floor-type receptacle close to the wall can be used to meet the required spacing. Isolated, individual wall spaces 2 feet or more in width, which are often used for small pieces of furniture on which a lamp or an appliance might be placed, are required to have a receptacle outlet to preclude the use of an extension cord to supply equipment in such an isolated space. The word usable does not appear at all in 210.52(A)(2) as a condition for determining compliance with the receptacle-spacing requirements. For example, to correctly determine the dimension of the wall line in a room, the wall space behind the swing of a door is included in the measurement. That does not mean that the receptacle outlet has to be located in that space, only that the space is included in the wall-line measurement. (4) 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 receptacle outlets required by 210.52(A). ENHANCED CONTENT Collapse Because of the need to provide a sufficient number of receptacles for the appliances used at the kitchen counter area, receptacle outlets installed to serve kitchen or dining area counters cannot also be used as the required receptacle outlet for an adjacent wall space that is subject to the requirements of 210.52(A)(1) and (A)(2). (B) Small Appliances. (1) Receptacle Outlets Served. In the kitchen, pantry, breakfast 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 receptacle outlets covered by 210.52(A), all countertop outlets covered by 210.52(C), and receptacle outlets for refrigeration equipment. Exception No. 1: In addition to the required receptacles specified by 210.52, switched receptacles supplied from a general-purpose 15- or 20-ampere branch circuit shall be permitted in accordance with 210.70(A)(1), Exception No. 1. Exception No. 2: In addition to the required receptacles specified by 210.52, a receptacle outlet to serve a specific appliance shall be permitted to be supplied from an individual branch circuit rated 15 amperes or greater. ENHANCED CONTENT Collapse The limited exceptions to 210.52(B)(2) keep loads for specific equipment to a minimum so that the majority of the circuit capacity is dedicated to supplying cord-and-plug-connected portable appliance loads. The NEC restricts the loads supplied by these receptacle circuits because the number of cord-and- plug-connected portable appliances used by occupants is generally undetermined. Receptacles and other types of outlets in other locations, such as in cabinets, are not permitted to be connected to the small-appliance branch circuit. Such outlets reduce the capacity to supply portable appliances used at a kitchen counter. No restriction is placed on the number of outlets connected to a general- lighting or small-appliance branch circuit. The minimum number of receptacle outlets in a room is determined by 210.52(A) based on the room perimeter and on 210.52(C) for counter spaces. Installing more than the required minimum number of receptacle outlets can also help reduce the need for extension cords and cords lying across counters. The exhibit below illustrates the application of the requirements of 210.52(B)(1), (2), and (3). Only the counter area is required to be supplied by both small-appliance branch circuits. The wall receptacle outlets in the kitchen and dining room are permitted to be supplied by one or both of the circuits as shown in the two diagrams. Exception No. 1. Switched receptacles supplied from general-purpose 15- ampere branch circuits may be located in kitchens, pantries, breakfast rooms, and similar areas. See 210.70(A) for details. Exception No. 2. This exception provides a choice for installing receptacle outlets to supply refrigeration equipment or other specific appliances in a kitchen or similar area. An individual 15-ampere or larger branch circuit can serve this equipment, or it can be included in the 20-ampere small-appliance branch circuit. A receptacle supplying refrigeration equipment is exempt from the GFCI requirements of 210.8 where the receptacle is greater than 6 feet from the edge of any sink and where it is located so that it cannot be used to serve countertop surfaces. (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) shall be permitted to be served by a small-appliance branch circuit. Exception No. 2: Receptacles installed to provide power for supplemental equipment and lighting on gas-fired ranges, ovens, or counter-mounted cooking units shall be permitted to be served by a small-appliance branch circuit. ENHANCED CONTENT Collapse Because of the comparatively small load associated with ignition controls and other electronics, gas-fired appliances are permitted to be supplied by a receptacle connected to one of the small-appliance branch circuits. (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. ENHANCED CONTENT Collapse In most dwellings, the countertop receptacle outlets supply more of the portable cooking appliances than the wall receptacles in the kitchen and dining areas, hence the requirement for the counter areas to be supplied by no fewer than two small-appliance branch circuits. The NEC does not specify that both circuits be installed to serve the receptacle outlet(s) at each separate counter area in a kitchen, but rather that the total counter area of a kitchen must be supplied by no fewer than two circuits; the arrangement of the circuits is determined by the designer or installer. The concept of evenly proportioning the load as specified in 210.11(B) (for loads calculated on the basis of volt-amperes per square foot) can be used as a best practice in distributing the number of receptacle outlets to be supplied by each of the small-appliance branch circuits. If additional small-appliance branch circuits are installed, they are subject to all the requirements that apply to the minimum two required circuits. The two circuits that supply the countertop receptacle outlets can also supply receptacle outlets in the pantry, dining room, and breakfast room, as well as an electric clock receptacle and electric loads associated with gas-fired appliances. However, these circuits are to supply no other outlets/loads such as outdoor lighting or an outdoor receptacle. (C) Countertops and Work Surfaces. In kitchens, pantries, breakfast rooms, dining rooms, and similar areas of dwelling units, receptacle outlets for countertop and work surfaces that are 300 mm (12 in.) or wider shall be installed in accordance with 210.52(C)(1) through (C)(3) and shall not be considered as the receptacle outlets required by 210.52(A). For the purposes of this section, where using multioutlet assemblies, each 300 mm (12 in.) of multioutlet assembly containing two or more receptacles installed in individual or continuous lengths shall be considered to be one receptacle outlet. (1) Wall Spaces. Receptacle outlets shall be installed so that no point along the wall line is more than 600 mm (24 in.) measured horizontally from a receptacle outlet in that space. The location of the receptacles shall be in accordance with 210.52(C)(3). Exception No. 1: Receptacle outlets shall not be required directly behind a range, counter- mounted cooking unit, or sink in the installation described in Figure 210.52(C)(1). Exception No. 2: Where a required receptacle outlet cannot be installed in the wall areas shown in Figure 210.52(C)(1), the receptacle outlet shall be permitted to be installed