I am installing a new 12 guage circuit. I understand code allows 12
devices on the circuit. From reading other postings, it sounds like an
outlet with two plugs is considered one device. Is that correct? So
I can have 4 recessed lights and up to 8 outlets, each with two plugs
and be compliant?
A duplex receptacle is one device, a switch is one device and a
wirenut is one device. ;-)
A device is " A unit of an electrical system that is intended to carry
but not utilize electric energy".
In a dwelling you have no fixed limit on ther number of "receptacle
outlets" only that they get evenly spread out across the computed
number of circuits.
In commercial it is 90va per receptacle (a duplex being 2x90 or 180va)
The reason dwellings don't count up receptacles is they are placed for
convenience, not load. (the 6' rule)
In the U.S. the NEC requires 1.5 amps per outlet or 13 max outlets on a 20
amp circuit- only in commercial applications. This does not apply to
residential wiring where you need one 15 amp circuit for every 600 sq ft of
house, for general lighting. For what you're doing it's best to calculate
your particular usage and don't exceed 80% of the capacity of the wire
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