I have been remodeling my house for about a year now and updating my electrical and so on. The box that is in that was too small and i have to put a sub panel in. I got a 8 space box with a 50 amp breaker from the main to the sub running on a 8-3 gauge wire. Now we have been having trouble with one of the 110 volts that come into the house. At times the light and outlets will go out on that current and won't come back on for a while, but it does trip any breakers and comes back on by itself. When it goes out got my test and check both lines coming in one is good with full power and the other one will either have some power or none at all. I don't if this is from the meter or something inside the house triggering it, because sometimes if you use something on that side that's having trouble it will shut off. I have replaced the main breaker and checked for any opens that would cause an arc. I don't know where too go from here.