13.2kV & 480V Conduit Separation
13.2kV & 480V Conduit Separation
(OP)
Is there any reason (safety, technical, or otherwise) that 13.2 kV and 480V conduits cannot be run on the same conduit rack?
If so, what should be the minimum separation between conduits of these two voltages?
Thanks!
Mike
If so, what should be the minimum separation between conduits of these two voltages?
Thanks!
Mike






RE: 13.2kV & 480V Conduit Separation
I would segregate the high voltage conduits away from the low voltage conduits to the extent possible, just for increasing awareness of high voltage circuits.
RE: 13.2kV & 480V Conduit Separation
Regards,
Lyledunn
RE: 13.2kV & 480V Conduit Separation
RE: 13.2kV & 480V Conduit Separation
In sum and substance, the advice is to maintain conduit Center to Center spacing as would be used in laying out conduits for entry into a junction box. "...Field experience has indicated this degree of spacing between runs has not caused any problems....". 1996 NEC Copyright 1995 NFPA.
This is consistent with the empirical nature of the ampacities cited in the code.
RE: 13.2kV & 480V Conduit Separation
RE: 13.2kV & 480V Conduit Separation
1. Industry practices, e.g. nuclear, non-nuclear
2. Grounding practices, IEEE Stds 80, 142, etc.
3. Type of conduits
4. Etc.