Receptacle requirements in nondwelling
- Thread starter darren12
- Start date
- Status
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
There are rules for power availability for a few specific areas, like conference rooms and store window display lighting that could be taken to mandate a certain number of receptacles, but beyond such special rules, there is no general requirement.
Thanks
victor.cherkashi
Senior Member
- Location
- NYC, NY
Receptacles in non dwelling units placed by architect. Common sense to add receptacle in electrical, mechanical rooms, roof etc.
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Sent from my Nexus 5X using Tapatalk
Ever notice receptacles are almost never on the print for electric rooms?
Murphy79
Member
- Location
- Kansas City , MO
- Occupation
- Master Electrician/ Elelectrical Contractor/Instructor/ Solar
No requirement
No requirement
There is no requirement for spacing but as far as demand....I would start by placing no more than 13 on 20A circuit being that is commercial. Also start looking @ article 210.21(B)....basically place receptacle as needed And BE SURE TO REMEMBER about calculating Loads such as cord connected and utilization equipment fastened in place....don't worry because your cost will go up since there is no provided locations on prints but I general try use to use common sense as far as use of provided space where receptacles may be required....Hopes this make sense!
of 20 amperes.210.21(B) Receptacles.
210.21(B)(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
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).
210.21(B)(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).
210.21(B)(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).
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 as specified in 210.23(A) through (D) and as summarized in 210.24 and Table 210.24.
210.23(A) 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.
210.23(A)(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.
210.23(A)(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.
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.
210.23(B) 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.
210.23(C) 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.
210.23(D) Branch Circuits Larger Than 50 Amperes.
Branch circuits larger than 50 amperes shall supply only nonlighting outlet loads.
No requirement
There is no requirement for spacing but as far as demand....I would start by placing no more than 13 on 20A circuit being that is commercial. Also start looking @ article 210.21(B)....basically place receptacle as needed And BE SURE TO REMEMBER about calculating Loads such as cord connected and utilization equipment fastened in place....don't worry because your cost will go up since there is no provided locations on prints but I general try use to use common sense as far as use of provided space where receptacles may be required....Hopes this make sense!
of 20 amperes.210.21(B) Receptacles.
210.21(B)(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
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).
210.21(B)(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).
| Circuit Rating (Amperes) | Receptacle Rating (Amperes) | Maximum Load (Amperes) |
|---|---|---|
| 15 or 20 | 15 | 12 |
| 20 | 20 | 16 |
| 30 | 30 | 24 |
210.21(B)(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).
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 as specified in 210.23(A) through (D) and as summarized in 210.24 and Table 210.24.
210.23(A) 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.
210.23(A)(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.
210.23(A)(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.
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.
210.23(B) 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.
210.23(C) 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.
210.23(D) Branch Circuits Larger Than 50 Amperes.
Branch circuits larger than 50 amperes shall supply only nonlighting outlet loads.
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