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#90431 - 11/21/04 08:00 AM Control of variable speed drive.
Sparky_1 Offline

Registered: 11/20/04
Posts: 14
Most variable speed drive I have seen use a shielded cable, low voltage ac or dc to control a variable speed drive remotely. Is it possible to use THHN and pull it in with line voltage 277 & 110 to control a variable speed drive remotely? Or is this a code problem?


edited to remove excess spaces and improve readability

[This message has been edited by resqcapt19 (edited 11-21-2004).]

2014 / 2011 NEC & Related Books and Study Guides
#90432 - 11/21/04 01:22 PM Re: Control of variable speed drive.
resqcapt19 Offline

Registered: 11/10/00
Posts: 2209
Loc: IL
If you are asking about the speed control circuit, it is likely an Article 725 Class II circuit and is not permitted in the same raceway or cable with the power conductors.

#90433 - 11/21/04 04:25 PM Re: Control of variable speed drive.
Sparky_1 Offline

Registered: 11/20/04
Posts: 14
Looks like I will be running some conduit for that control circuit then.
Thanks Don for the quick reply.


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