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#12430 08/09/02 01:39 PM
Joined: Oct 2000
Posts: 4,081
Likes: 3
I've just seen a roll of UF (12/2 w/gr) that has a very unusual couductor in it. Besides the Black and Bare wires there is what appears to be a Red that was painted White on 'one side' (half the circumference)

Is this something new, or some sort of defect?


#12431 08/09/02 01:52 PM
Joined: Mar 2001
Posts: 2,056
Easy one...
This way for 120.
The other way for 240!

#12432 08/09/02 02:03 PM
Joined: Oct 2000
Posts: 2,749
Maybe for this rule??


(2) ......... In these applications, the conductor with white or gray insulation or with three continuous white stripes shall be permanently reidentified to indicate its use by painting or other effective means at its terminations and at each location where the conductor is visible and accessible.

Joe Tedesco, NEC Consultant
#12433 08/09/02 04:07 PM
Joined: Oct 2000
Posts: 4,081
Likes: 3
I just went and looked at this again. The Red seems a little thinner than usual so it is more likely a White with Red paint on it. It seems to be fairly consistant throughout the coil (250')

[Linked Image]

I twisted the wire a bit so that you could see that it is 2 colors.


#12434 08/09/02 05:14 PM
Joined: Apr 2002
Posts: 7,333
Likes: 7
We had a similar situation...500' spool #6 & #8 THHN Cu, full spool, factory wrapped).
Was supposed to be "black" and about 40% thru the spool it changed gradually from black to red.

Advised the supply casa, they advised the distrubitor & mfg. Had a call wanting to see it from sales rep. Told him to come to jobsite; he can see both ends.


#12435 08/09/02 05:44 PM
Joined: Oct 2000
Posts: 5,392
Most rx has a 'born on' date
(proof they drink Bud?)
that can be traced via manufacturer.

methinks they just got done with 12-3 and did'nt clean the 'wire machine' guts too well.....

#12436 08/10/02 02:42 PM
Joined: Apr 2002
Posts: 914
I've noticed recently on colored wires that they are actually white wire with a thin coating of the darker color over the white. So, it is possible that when they were coating the wire to make it red that it didn't cover good. Then somebody at the plant only saw the white and loaded it in the machine as white. Just a thought.

#12437 08/10/02 03:14 PM
Joined: Nov 2001
Posts: 280
That certainly looks confusing. On the new 12-2-2 w/g they use black and white then red and White with a red trace for two different circuits.
However I have noticed with some cable when I use the seatek to strip it with the black coating will come off and there is a white wire under this black coating.
Seems like the manufacturing process has cut some corners.

#12438 08/10/02 05:48 PM
Joined: Aug 2001
Posts: 7,520
I've noticed recently on colored wires that they are actually white wire with a thin coating of the darker color over the white.

I've noticed that starting to happen on some brands of cable over here as well, although sometimes it appears that the white inside is almost a separate layer bonded to the outer red or black. Strange that it's the more expensive brands being made like that now.

#12439 08/11/02 04:15 PM
Joined: Apr 2002
Posts: 2,527
In the early seventies, larger Anaconda THW was extruded that way. Didn't need white tapeā€”just a piece of emery cloth.

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