How many lights on a 15 amp circuit that can be used? firstly, we have to find the capacity of the circuit as the circuit is 15 amps and functioning under a potential difference of 120 volts, the capacity of the circuit is 15*120 or 1800 watts in the case of a 20 amp circuit, functioning under the same potential difference of 120 volts, the. Lighting on a 20 amp circuit. National electric code 40414 specifies that a switch may control a load that does not exceed the rating of the switch if a lighting circuit has a 10 amp load operating at 125 volts ac, the switch that controls that circuit must be rated at a minimum of 125 volts, 10 amps ac, even on a circuit with a 20 amp circuit breaker.
lighting on a 20 amp circuit
A quick way to find out how many plugs to put on a circuit and how many lights to put on a circuit residential electrical wiring 101 follow three easy steps to determine how many items to put on. Household circuits in the u.s. are 120 volts, although a few circuits may have 240-volt capacity, and most allow 15 to 20 amps. if you are planning a special event with lighting or wanting to add specialty lighting to your home, you will need to calculate the lighting load to ensure you do not draw too much power and trip a circuit breaker.. Well been reading up on my electrical, and i know this topic has been debated/discussed here many of times. however in this 'master electricians review" book, it states that a maximum of 10 duplex receptacles (180 va) are permitted on a 20 amp circuit in other than dwelling occupancies..
get link reference
