Isolated Ground

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slipknotbmg

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Is an Isolated grounding conductor considered an "equipment grounding conductor"? And does it fall under the color code requirements of 250.119?
The reason I am asking is we have a tray cable system w/ multiconductor cables used for Branch circuit distribution, and the color code of the multicon. allows for a green EGC and (hopefully) a orange IG conductor. We could re-identify the orange, but why waste the time if we don't have to.
 
Re: Isolated Ground

As far as the NEC covering in there definition of a "IG condutor",all I can find in refering to idenification are 250.96 FPN and 250.146 FPN.In both notes,refered to as "Isolated Equipment Grounding Conductor".In ID'ing the conductor,336.10(7) and 250.119 in you options.
 
Re: Isolated Ground

Originally posted by slipknotbmg:
we have a tray cable system w/ multiconductor cables used for Branch circuit distribution, and the color code of the multicon. allows for a green EGC and (hopefully) a orange IG conductor. We could re-identify the orange, but why waste the time if we don't have to.
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You have to.

Isolated ground or not it is a grounding conductor and must be bare or green.

Your installation would fall under 250.119(B)

In this area green would be the EGC and green with yellow stripe would be the IGC.
 
Re: Isolated Ground

And a good idea would be to make it painfully obvious which is the IG for future people down the road.
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Well that was the intent of keeping it orange, guess I'll buy some tape. Heck I've always got the industral establishment exception, lol.
 
Re: Isolated Ground

technically, you cant reidentify the grounding conductor unless its bigger than #6 (250.19). The easiest way i found to do what you want is to strip the orange all the way back to the sheath, and use that as your EGC. and then just put one wrap of yellow on the green conductor and use that as your IG. Then its painfull obvious which is what. I hope you dont think that leaving it orange would make it obvious that its IG. :confused:
 
Re: Isolated Ground

250.119(B)
(B) Multiconductor Cable. Where the conditions of maintenance and supervision ensure that only qualified persons service the installation, one or more insulated conductors in a multiconductor cable, at the time of installation, shall be permitted to be permanently identified as equipment grounding conductors at each end and at every point where the conductors are accessible by one of the following means:
(1) Stripping the insulation from the entire exposed length
(2) Coloring the exposed insulation green
(3) Marking the exposed insulation with green tape or green adhesive labels
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2005 NEC
 
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