Can you use a light timer that is rated at 15A and 115V with a circuit that is rated at 20A and 120V?

Answer:

Yes you can. Please be aware you have the situation of pulling more amps, in this case 5 amps, over the timmer before the fuse blows. which may damage the timer To avopid this appliances plugged into the timer should be rated at 15 amps or less. Thgere are different type circuit breaker immediate and time delay for where an appliance such as motors exceed the limit to start then drop down when running?

First answer by Thinktomuch. Last edit by Thinktomuch. Contributor trust: 17 [recommend contributor recommended]. Question popularity: 16 [recommend question].