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Marking conductors #167070 08/04/07 08:10 PM
Joined: Dec 2006
Posts: 43
W
windmiller Offline OP
Junior Member
Hi,
What article is it that covers the minimum size wire that can be phased or taped with a different color. Like a black to white.
I am sure this has been covered but I cant find it in a search.

Thanks for your help.

Windmiller

Last edited by windmiller; 08/04/07 08:13 PM. Reason: not filled in right

We all live under one King
2017 / 2014 NEC & Related Books and Study Guides
Re: Marking conductors [Re: windmiller] #167079 08/05/07 07:54 AM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
For marking of grounded conductors see 200.6 A through E

For marking of equipment grounds, see 250.119 A through C


Few things are harder to put up with than the annoyance of a good example.
Re: Marking conductors [Re: Tom] #167092 08/05/07 01:48 PM
Joined: Dec 2006
Posts: 43
W
windmiller Offline OP
Junior Member
Thanks for the reply. These articles cover grounded condcutors, aren't there some that cover ungrounded conductors?

Thanks

Windmiller


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Re: Marking conductors [Re: windmiller] #167096 08/05/07 04:11 PM
Joined: Nov 2000
Posts: 2,148
R
resqcapt19 Offline
Member
There are no rules that cover the method of identifying ungrounded conductors.
Don


Don(resqcapt19)
Re: Marking conductors [Re: resqcapt19] #167098 08/05/07 05:11 PM
Joined: Dec 2006
Posts: 43
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windmiller Offline OP
Junior Member
Don,
Thanks for the reply. I was told at one time by someone on the forum (I thought) that you could not re-identify conductors smaller than number 8 awg. Am i thinking of something else perhaps?

I see a lot of #12 wire that has the neutral in a blk-r-bl- cable that has the bl re-identified as a neutral. And some where the bk-r-bl is changed to brn-or-yl on a #12 awg.

I guess it is only a neutral that cant be re-identified if it is smaller than a #6 unless it meets the exceptions?

Thanks

Windmiller


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Re: Marking conductors [Re: windmiller] #167102 08/05/07 06:55 PM
Joined: Nov 2000
Posts: 2,148
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resqcapt19 Offline
Member
windmiller,
Quote
I see a lot of #12 wire that has the neutral in a blk-r-bl- cable that has the bl re-identified as a neutral.

That may be a violation of 200.6(E).
Don


Don(resqcapt19)
Re: Marking conductors [Re: resqcapt19] #167103 08/05/07 07:32 PM
Joined: Dec 2006
Posts: 43
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windmiller Offline OP
Junior Member
Don,
Thanks. Let me rephrase that, I am not sure I explained it right and I am not sure I understand 200.6 (e).

We use tons of MC cable. Given a 4/C 12, that has "bk-r-bl-gn" in in it where used as a 120 V circuit will have the "BL" marked as a Neutral with Scotch 35 White phase tape.

Is this a violation?

Are you saying that it is permissable to re-identify a conductor smaller than a #8 of any color to white?

I was thinking that anything smaller than a #8 could not be re-identified at all. Say you have a black #12, can you reidentify it to a neutral?

Sorry for the confusion.

thanks

Windmiller

Last edited by windmiller; 08/05/07 07:33 PM.

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Re: Marking conductors [Re: windmiller] #167126 08/06/07 06:08 PM
Joined: Nov 2000
Posts: 2,148
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resqcapt19 Offline
Member
Windmiller,
Quote
(E) Grounded Conductors of Multiconductor Cables The insulated grounded conductors in a multiconductor cable shall be identified by a continuous white or gray outer finish or by three continuous white stripes on other than green insulation along its entire length. Multiconductor flat cable 4 AWG or larger shall be permitted to employ an external ridge on the grounded conductor.
Exception No. 1: Where the conditions of maintenance and supervision ensure that only qualified persons service the installation, grounded conductors in multiconductor cables shall be permitted to be permanently identified at their terminations at the time of installation by a distinctive white marking or other equally effective means.

Unless you can meet the requirements of the exception, you cannot re-identify a conductor of a multiconductor cable as a grounded conductor no matter what the size is.


Don(resqcapt19)
Re: Marking conductors [Re: resqcapt19] #167137 08/06/07 08:17 PM
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Posts: 43
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windmiller Offline OP
Junior Member
Don,
Ok I see now. Thanks

Windmiller


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Re: Marking conductors [Re: windmiller] #167438 08/12/07 01:42 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline
Member
Don- When I read 210.5(C) I get the impression that we have some direction on identifying the ungrounded conductors and I wonder if inspectors will allow for instance 2 systems (240/120 & 480/277) to have the same color ungrounded conductors and only change the color of the grounded conductors.

Last edited by George Little; 08/12/07 01:46 PM.

George Little
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