Hi,
I have a question.
I'm designing UL508A panels.
Main panel, includes feeder circuit (main breaker + pdb) and a few branch circuits (fuses/breakers).
One of the BCPD feed external VFD (mounted near the panel on the wall). Load side of the VFD connects to a subpanel that feeds 4 motors..
The subpanel located next to the VFD.
It conains: main disconnect switch, 4 overload relays, 4 motor disconnect switches.
Can I consider a subpanel's main DS as a branch circuit or feeder circuit (because it has main disconnect switch)?
I have a question.
I'm designing UL508A panels.
Main panel, includes feeder circuit (main breaker + pdb) and a few branch circuits (fuses/breakers).
One of the BCPD feed external VFD (mounted near the panel on the wall). Load side of the VFD connects to a subpanel that feeds 4 motors..
The subpanel located next to the VFD.
It conains: main disconnect switch, 4 overload relays, 4 motor disconnect switches.
Can I consider a subpanel's main DS as a branch circuit or feeder circuit (because it has main disconnect switch)?