2 1pole C/Bs or 1 2pole C/B
2 1pole C/Bs or 1 2pole C/B
(OP)
So,
This is internal to a piece of parelleling switchgear, if that makes any difference.
My gut tells me that this is not a big deal, but I wanted to run this by some other people first.
We have need for 2 loads in a generator enclosure - they are both 120V. One draws 7A, one 17A. We are thinking a 480 - 240/120 XFMR, 10kVA we'll say, and I'm wondering if there's any issues with running out of a 2 pole breaker vs running out of 2 1pole breakers.
Either way, we're going to be running both ends of the transformer windings through protection, and two nuetrals back to the center tap on the transformer. I can't forsee any issues with this... And I would imagine a single 2 pole breaker would be slightly cheaper and easier to mount.
Thanks
This is internal to a piece of parelleling switchgear, if that makes any difference.
My gut tells me that this is not a big deal, but I wanted to run this by some other people first.
We have need for 2 loads in a generator enclosure - they are both 120V. One draws 7A, one 17A. We are thinking a 480 - 240/120 XFMR, 10kVA we'll say, and I'm wondering if there's any issues with running out of a 2 pole breaker vs running out of 2 1pole breakers.
Either way, we're going to be running both ends of the transformer windings through protection, and two nuetrals back to the center tap on the transformer. I can't forsee any issues with this... And I would imagine a single 2 pole breaker would be slightly cheaper and easier to mount.
Thanks






RE: 2 1pole C/Bs or 1 2pole C/B
RE: 2 1pole C/Bs or 1 2pole C/B
RE: 2 1pole C/Bs or 1 2pole C/B
Now what NEC code to quote?
RE: 2 1pole C/Bs or 1 2pole C/B
This may not make any practical difference in your case, but really, how much will you save using a 2-pole MCCB instead of two 1-pole MCCBs? Actually, according to my out-of-date Grainger catalog, a 1-pole 30A MCCB costs $6.60 and a 2-pole 30A MCCB costs $19.97, so it will cost more to use the 2-pole.
RE: 2 1pole C/Bs or 1 2pole C/B
There is also common sense, two loads, to circuits, two breakers. I can't explain that to you.
If it;s some kind of homemade project, who cares.
RE: 2 1pole C/Bs or 1 2pole C/B
Dave
RE: 2 1pole C/Bs or 1 2pole C/B