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Welding Cable

Welding Cable

Welding Cable

(OP)
Hello,

I'll preface this by saying that this is in one of our old powerplants, so it is exempt from the NEC but I do believe that we should adhere as much a possible.

I have found an installation of a feed from one panel to another, that welding cable was used.  It is in steel conduit, is #1 copper, and operating at 480V.

If this was not in a powerplant, would this be allowed by NEC?

Thank you in advance.

RE: Welding Cable

Yes, if the cable is ETL listed with an appropriate type designation, is rated for the voltage being used and terminations are rated for use with the cable.

RE: Welding Cable

What alehman said, but I suspect that it may be hard to find a welding cable that meets all the conditions.
BUT for a Non-NEC power plant, have you considered locamotive cable? I saw it used in a small plant and started using it myself in small power plants. It is a tougher cable, both the insulation and the wire stranding and is available in much larger sizes than welding cable.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Welding Cable

Yeah, locomotive cable (DLO) is readily available with the required listings. Still have to get the right lugs, and it's kind of expensive...

RE: Welding Cable

One trick is to use a hose clamp to compress and contain the strands so as to be able to get all the strands into the connector. You generally need a connector at least one size larger than rated for normal building cable.
That is, 353 MCM is a tight fit in 500 MCM connectors.

Bill
--------------------
"Why not the best?"
Jimmy Carter

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