On a Friday night my tenant called and said that he tried to reset the breaker in the my 15amp box and sparks came out. I called Tam at 9am on a Saturday and he was on his way from South San Francisco to my rental unit in North Beach to fix a short circuit in an hour. Tam was easy to reach/coordinate with, reasonable and replaced a bad wire in less than an hour for $90. I would use him again and highly recommend him!