How Many Lights on a 15 Amp Circuit

The number of LED lights that can be installed on a 15 Amp circuit depends on the wattage of the lights and the total wattage capacity of the circuit.

On a 120V supply a 15 Amp lighting circuit has a maximum wattage capacity of 1800W, with a total combined wattage of lights to not exceed that. We look at how many LED lights can be on a 20 Amp circuit to avoid issues such as flickering, dimming or even tripping of the circuit breaker due to an overload.