air conditioner unit branch circuit rules 2

[jor1492]

Hi all,

For the design of a temporary camp, small rooms, it has been decided to power each room with a single circuit - 2 pole breaker for an 1100VA Air conditioner split (240V, 2 hot wires 120V each) and from there, one hot 120V phase will continue to power 3 outlets for small appliances and 2 - 64W light fixtures. Does this violate any article from the NEC? (focus on the fact that we are including an a/c unit (240V) and other small loads (120V) to the same branch circuit).


Thanks in advance

 

[BlackJackJacques]

Sounds like you have a number of small rooms and the power for each room is controlled by a single 2-pole feeder breaker serving a smaller branch panel that feeds the AC unit and a small number of receptacles. If the branch panel has a separate breaker for the AC unit and another separate breaker just for the receptacles, that may or may not need to be GFCI/AFCI protected, you should be fine as far as separation of circuits. The NEC typically allocates 180VA per receptacle, so the 1100 VA for both the AC unit and the receptacles sounds small. You should talk to the authority having jurisdiction (the building code official)to learn how they would classify your arrangement. They will likely ask you to provide more details.