5:23 AM
I have a question that I never really thought of and someone asked me this question the other day. I told them I didn't know the answer to it and I will find out if I can and get back to them on it. This guy who is in an electrician tech class asked me if there is a limited number of breakers that should or can be on a phase or leg. Electricians call what engineers call a phase a leg. one leg being 125 volts and the other 125 out of phase. or 180 degrees out of phase
He was wondering if there is a code or notation on how many breakers and what total current is allowed on a single leg or phase in a standard 400 amp service shop setting. He also asked if it was the same for residential 200 Amp services as well. ... if they have a code or notation saying how many breakers can be put on one leg.
He asked is it allowed to put all 100 amps on a single leg on a residential. And all 400 amps on a single leg for a shop setting? It would make sense that you could do that, but the voltage drop would be very very significant that some devices may run hot or may get insufficient voltage. I had surged a 100 amp break to 136 amps and it gave me 60 volts loaded. still ran transformers I had surging it.
But I would like to get all of your opinions on it and maybe even some citations or codes that you guys and gals can find. I have been looking and haven't found anything yet. But I think that I may be using wrong key search terms in google. So I would like your help on this and opinions based on what you guys and gals know. :)
