I inspected a house today with a main panel (upstream of the distribution panel) which had been sealed shut by an electrical authority… so I could not open the box to examine the supply mains or the fuses.
However, the front of the box had a label that identified the maximum design amperage as 50 amps. So I have to assume that the service to the house is 30 amps. (can’t be 60)
The house has an air conditioner, electric stove, and electrical service to the detached garage.
All of the wiring is un-grounded. No knob and tube visible.
How plausible is it that the service is really 30 amps?