3 ms·

And 100A isn't unusual, particularly for anything built more than 20 years ago.

• cbm-vic-20 5y ago
  My 100 year old house in the US has 100A service- though I'm thinking of upgrading to 200A service to help with Level 2 EV charging.
  • StillBored 5y ago
    It was probably upgraded from ~30A at some point in the past as a requirement of a lender. Presumably it has circuit breakers? Those weren't even a choice in a 100 year old house when it was built AFAIK. I've been curious how well these jobs are generally done, when I was a kid it was a big selling point to have circuit breakers instead of fuses. I've always been curious how through some of those upgrades were, did they replace all the wiring too, does everything have grounds, etc. Or did they just pull a few 240 lines for AC/range/etc? https://www.thespruce.com/service-panels-changed-in-the-1900s-1152732 https://www.thespruce.com/service-panels-changed-in-the-1900... Which says 100A didn't become common until the 1960's.
• DrPhish 5y ago
  True. For comparison, I have a 60s era 1000sqft house in northern Canada that had a 60A service into a 50A breaker panel up until last year. For insurance, safety and maintenance reasons[0] we upgraded to a 200A service, but for a small house and a 3-4 person family 50A is sufficient provided your hot water heater is natural gas. [0]: The incoming line was aerial and over the legal span length, so it had been attached to an insulator nailed to a tree halfway between the house and mast. Also the mast was deteriorating to the point that it needed to be replaced anyways and insurance was making noise about not allowing a new policy if it wasn't upgraded to at least 120A. We did a customer pole and went underground to the house. Much nicer aesthetics and I can now turn off a breaker on my side of the meter at the pole to do maintenance.