When I was building my collection, I kept adding games to a single 15 amp circuit. It wasn't until I reached 7 games before they tripped the breaker. Mr Propane came in and set me up with two 20 amp circuits and my problem was solved. Fortunately, there was room in the circuit box to add the twin breaker. Unfortunately, I downsized my house and I am back to the original problem of having a single 15 amp circuit and 15 games that I can't turn on all at the same time.
Howie