I am trying to find out if it is ok to use a 40 amp single pole circuit breaker as my main circuit breaker from the inverter to the AC distro panel. I will be using a 4000w inverter to feed my 120v AC loads. I have read that single pole circuit breakers should only be used for 15 to 20amp and double pole circuit breakers should be used for 240v 20 - 60 amp. I was planning to get a Blue Sea AC distro panel and get a Blue Sea 40 amp single pole circuit breaker for the main circuit breaker. Can anybody tell me if that will work?