I had these guys check out why I only had electricity working in half of our home. I was at work so I took there word for it that a main breaker had to be replaced. They left and returned 2 hours later, turned the eletricity on and collected $200.00 from my wife. Unfortunately, I have fiqured out since then I was scammed. I assume they just had to reset the breaker considering they all look the same and with the same with an equal amount of dust on them. If you use them just double check the work/my suggesstion.