Does neutral counts as a current carrying conductor on a 3 wire branch circuit?
Correct.Just for clarification, in the 120/240 3 phase four wire, your L2 is the high leg, right?
Does neutral counts as a current carrying conductor on a 3 wire branch circuit?
Just for clarification, in the 120/240 3 phase four wire, your L2 is the high leg, right?
Just for clarification, in the 120/240 3 phase four wire, your L2 is the high leg, right?
Feeder- ABC+N = NotWhile I concur that this is true as far as code is concerned, I must confess I am having a hard time understanding why the neutral is not a CCC in a delta system. :blink:
You don't typically have high leg to neutral loads on a 4 wire delta system. The line to neutral loads are across a single transformer winding, exactly like they are on a single phase center tapped transformer. The two lines across the center tapped winding of the 4 wire delta system are on the opposite ends of a single sine wave (often called 180° our of phase) and the neutral load cancels just like on a single phase system....
That being said, if my analogy is close to correct, why would a delta system be immune? I haven't had opportunity to witness how a delta with A and C loaded appears on a neutral, but I had always thought it did the same thing because it is a three phase transformer, not a single phase. So help me out.![]()
Thank You!!!Smart $
Excellent presentation!!
Phil Corso
While I concur that this is true as far as code is concerned, I must confess I am having a hard time understanding why the neutral is not a CCC in a delta system. :blink:
How does a 120 volt corner grounded delta have 208 line to line?I find it interesting that when you take only two lines and a neutral from a three phase wye (say 208Y/120) to a panel the resulting voltages and currents are identical to a 120V corner grounded delta.![]()