howson Howard, Home breaker panel is where most of my knowledge comes from. Lets look at a typical home panel. The panel is split left and right banks. lets focus on the left bank. The main breaker is at the top of the breaker supply bars. This breaker supplies both of the bars. One is L1 (A) and the other L2 (B). We can label the breakers starting at the top (typically) either 1-2-1-2-1-2... or A-B-A-B... The reason they alternate between 1&2 or A&B is to pull 240V from 2 120v legs.
If we look into a 3 phase breaker panel the sequence now becomes 1-2-3-1-2-3-1-2-3-1-2-3... This is because it takes 3 breakers to make 3 phase. It's always best if you start your 3 phase on 1 (rotation and L3 can be "wild").
When I see your panel, it appears it's split at the main breaker with L1 all on one side (which to me is a bit strange). Don't know if its a RV thing on the breaker panel being laid out that way.
If we look into a 3 phase breaker panel the sequence now becomes 1-2-3-1-2-3-1-2-3-1-2-3... This is because it takes 3 breakers to make 3 phase. It's always best if you start your 3 phase on 1 (rotation and L3 can be "wild").
When I see your panel, it appears it's split at the main breaker with L1 all on one side (which to me is a bit strange). Don't know if its a RV thing on the breaker panel being laid out that way.
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