The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Calling all Non-US members!! (Non-US only)
by aussie240
Today at 02:39 AM
Photo Upload Tutorial
by DanK
Yesterday at 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
1 registered (LongRunner), 218 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#99851 - 09/22/06 10:17 AM NEC - Separation between control and power lines
Currently Offline
Member

Registered: 04/21/02
Posts: 54
Loc: TN
My book is at home now and I have this question for the industrial control people here.

Is there anything in the NEC that dictates a defined separation between control wiring and power wiring?

I.E. 14 inches per kilovolt ....

Top
2014 / 2011 NEC & Related Books and Study Guides
#99852 - 09/22/06 12:09 PM Re: NEC - Separation between control and power lines
earlydean Offline
Member

Registered: 12/22/03
Posts: 749
Loc: Griswold, CT, USA
so long as the wiring is separated by an enclosed wiring method, (NM cable, conduit, etc.) no.
_________________________
Earl

Top
#99853 - 09/26/06 09:38 AM Re: NEC - Separation between control and power lines
jwhite Offline
Member

Registered: 12/01/05
Posts: 67
Loc: Trenton, NC, USA
1/4 inch for class two and three. Or a suitable barrier.

Top
#99854 - 09/26/06 10:14 AM Re: NEC - Separation between control and power lines
George Little Offline
Member

Registered: 01/18/04
Posts: 1492
Loc: Michigan USA
Need to know what the control wiring is controling. If it is Class 1 wiring and it is functionally associated with the power wiring there is no problem having it in the same raceway as long as the insulation on all the conductors has a high enough rating. If the control wiring is Class 2 then it can not be in the same raceway with the power wiring without a barrier. 725.26(B)(1), 725.55(A)
_________________________
George Little

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals