100 amp residential service?
Answers:
Should be clearly marked on the outside of the fuse box.
Other answers:
The entrance panel will be marked, but that doesn't necessarily mean it's what the circuit is providing. Check the primary fuses or circuit breakers, it's marked on them.
The entrance panel will be marked, but that doesn't necessarily mean it's what the circuit is providing. Check the primary fuses or circuit breakers, it's marked on them.
Add up each breaker. They should be marked 10, 15 20, etc.
There should be a main disconnect fuse or breaker. This will be marked 100A, 150A or 200A. The service is not the total of all breakers in the panel.
do not listen to nicksparta's answer. he is way off base.
look at the main fuse or breaker, the service is (should) be what ever is marked on it.
Do Not add up the circuit breakers, Look at the main disconnect if it's not marked on the front, pull it out and look on the cartridge fuses and see if they're marked 60amp,100amp,etc...
The main breaker outside will have it marked. Not all appliances are continuous load appliances which is how the total of the breakers in the box will add up to more than what the main circuit is rated.
in breaker box, the main breaker will be printed with the amp rating