Paralleling a single neutral conductor with a 3/C tray cable
Paralleling a single neutral conductor with a 3/C tray cable
(OP)
The manufacturer's recommended wire size for input and output wiring to a UPS is for a 200% rated neutral. If we installed a a 4-wire #1/0, is there any reason we can't parallel in another #1/0?






RE: Paralleling a single neutral conductor with a 3/C tray cable
This assumes you are covered by the NEC. #1/0 is the smallest size for which conductors can be put in parallel.
Other codes may be different.
"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg
RE: Paralleling a single neutral conductor with a 3/C tray cable
RE: Paralleling a single neutral conductor with a 3/C tray cable
Is there a hint of sarcasm in your response? but I agree and thanks for pointing it out. However, I work for a utility where the NEC, although adhered to most of the time, has no real jurisdiction and actual science can prevail.
RE: Paralleling a single neutral conductor with a 3/C tray cable
There are a number of NEC rules that can't be supported by science, but none the less they are enforced by the AHJ, at least most of the time.
RE: Paralleling a single neutral conductor with a 3/C tray cable
your advise quite interest me. you mentioned that two neutral wire can be paralleled provided that they are as close to each other and must be in the same conduit. my query is . . . what would be the adverse effect if one in inside ferrous conduit while the other is inside non-metallic conduit (PVC). Really would appreciate your reply. thanks,
capuchi
RE: Paralleling a single neutral conductor with a 3/C tray cable
"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg