I have a 100 amp main and all of the circuit breakers in my main service panel and my sub-panel add up to about 180 amps. Is this all right or do i need to upgrade to a 200 amp main? Any help would be appreciated thanks!
Yes,
Can my Circuit breakers add up to more than my main breaker?
Adding the branch breaker ratings is totally irrelevant.
The Main is sized according to the calculated load, and each breaker is sized by other means, and often do end up much more than the main.
Why do you ask?
Is there a problem your having, or just curious?
The detailed answer is much more than I have given, but too detailed to give now without knowing why you ask.
If your inquisitive and like to read, review Article 220 of the NFPA 70: National Electrical Code®.
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