I have a HO that needs his Zinsco main panel replaced.(he works for a insurance co.) Zinsco has a 100 amp backfed main, I was originally trying to see if he only needed a panel swap and not have to change the riser and meter base, which is a round base (60a?), He said later he might want to add Solar and a car charger. his load is only 64 amps even with a 30a 240v charger included, 814 sq. ft. living space. Maximum solar roof space is 20x40 for 800 sq. ft. or 23amps backfeed or 30amp breaker based on calcs from online, estimators. So I figure I need to put in a 125amp bus panel with 100amp and still be under the overdrive rule. My question is do I have to make sure the meter socket can handle 150 or ok with the round base and 100amp aluminum #2 conductors?
