Daisy Chain Power cable
Daisy Chain Power cable
(OP)
Hi,
i was planning to build a design (see attached picture) in which i was planning to use 4 - 50HP 460/3/60 motor with VFD and daisy chaining the incoming power cable. i was wondering if this meets the NEC/IEEE code. Each VFD has a fused disconnect of 100A and i was planning to use #1AWG cable all over.
would really appreciate some input on this.
Thanks
i was planning to build a design (see attached picture) in which i was planning to use 4 - 50HP 460/3/60 motor with VFD and daisy chaining the incoming power cable. i was wondering if this meets the NEC/IEEE code. Each VFD has a fused disconnect of 100A and i was planning to use #1AWG cable all over.
would really appreciate some input on this.
Thanks
RE: Daisy Chain Power cable
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Daisy Chain Power cable
RE: Daisy Chain Power cable
RE: Daisy Chain Power cable
Depending on the AHJ's interpretation and whether you must add 20% of the largest load you may need 4/0 AWG or as large as 300 MCM cable.
Terminal lugs are approved for the connection of one conductor. They are not approved for joining conductors..
Consider a bus splitter ahead of the VFDs.
You may need a master switch to comply with OHSA regulations.
Realistically, you may need a disconnect switch for each VFD.
Operations may not like the idea of one master switch taking the skid down to service just one pump or VFD.
Yes I agree, the Canadian code does not apply, but when you are this far from compliance with the CEC, you are probably in violation of the NEC also.
Bill
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"Why not the best?"
Jimmy Carter
RE: Daisy Chain Power cable
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Daisy Chain Power cable