Sr. Electrical Designer
Can you put a 3 pole breaker in space bca (4,6,8) or do they have to go into a space like 2,4,6 or 38,40,42?
Yes that is disrespect.... but am looking for a code ref .. maybe a load balancing or panel design criteria.. thought this might be a good place to start... obviously not ...your obviously too smart to ask that kind of question.No disrespect but, I don't think he's after union or non union but the question you asked I think a 2nd year apprentice would know. An electrical designer should clearly understand the concept of 3 phase voltage transmission.
We had a existing panel to get a feed from … we always install 3 phase breatkers ABC .. the existing breaker we are looking at is installed BCA … we wanted to replace it with a larger breaker to subfeed another small panel.As long as you connect the phases properly whats the issue?
Thanks Mike ... now thats the kind of info we were looking for ...thanks for the info!Everything would work fine. Just make sure if you have a high leg on the first panel that is is landed on the B phase in the second panel(per code). It is best to Keep Phase A, B, C, all in the same orientation on the new panel. Loading would not change as you are taking all three phases from one panel to the next. However some panels do have a limit on the amperage of breakers that can be set in certain locations. IE. Some will not let you put a 125 amp breaker in the bottom half of the panel. A sticker on the door will usually note this if its an issue.
Say you have a 100 amp 3 phase breaker. The load on the breaker is 80 amps...We were wondering about the load balancing when changing phases to sub panel … is there a code that addressed this.
Thanks Kevin appreciate the comment we were just trying to make sure we didn't miss something.I should add that one other thing that might come into play is the total amperage draw of your new panel and old panel on the service. You would have to make sure that the total amperage(actual draw) of the loads on both panels is not over what your service is rated for.