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Old 02-23-2012, 09:46 AM   #1
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Coloring a white hot?


While having a look in my panel I noticed it looks as though the white wire of a couple of 10-2 romex wires were painted or colored black. Looks like sharpie to me. They are both connected to 2-pole breakers. Were these supposed to be 10-3 wires?

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Old 02-23-2012, 09:58 AM   #2
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Not necessarily, what you see is most likely a 240v circuit where the white wire was reassigned, painted or taped red or black to indicate hot. This is code and would be done in a 30amp 240v circuit such as for an electric hot water heater.

Writer’s information is for discussion purpose only and should be confirmed by an independent source.

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Old 02-23-2012, 10:16 AM   #3
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Many devices like water heaters or baseboard heaters only need two wires. A 10/2 is used and the white is coloured to indicate it is hot. Normal practice and code compliant.
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Old 02-23-2012, 10:51 AM   #4
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OK, No worries then. Water heater and heat pump on each one. Just thought wires couldn't be re-identified if 6awg or smaller and that it was at least preferred to have 4-wire for large appliances. All other 2-poles are 4-wire in the panel, that's what raised my eyebrows. Thanks!
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Old 02-23-2012, 11:39 AM   #5
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For wires #6 and smaller, colored wires may not be remarked white for neutral, and wires may not be remarked green for grounding.
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Old 02-23-2012, 11:42 AM   #6
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Quote:
Originally Posted by AllanJ View Post
For wires #6 and smaller, colored wires may not be remarked white for neutral, and wires may not be remarked green for grounding.
True, but this does not include cable assemblies, which romex is.
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Old 02-23-2012, 01:55 PM   #7
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Quote:
Originally Posted by jbfan View Post
True, but this does not include cable assemblies, which romex is.
I recently saw a service update and the licensed electrician used green # 6 from panel to ground rods, but from the panel to the meter #6 black taped green at the meter and panel. Permit and inspected, passed.


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Old 02-23-2012, 03:23 PM   #8
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Quote:
Originally Posted by Hardway View Post
I recently saw a service update and the licensed electrician used green # 6 from panel to ground rods, but from the panel to the meter #6 black taped green at the meter and panel. Permit and inspected, passed.


Writer’s information is for discussion purpose only and should be confirmed by an independent source.
I'm sure that is one code violation that happens many times.
I can't tell you how many times I have taped the wires.
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Old 02-23-2012, 03:33 PM   #9
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Quote:
Originally Posted by jbfan View Post
I'm sure that is one code violation that happens many times.
I can't tell you how many times I have taped the wires.
When did it become code that you can't reassign #6 single conductors? Maybe not all venues are following it. Or electricians are using what they have on hand
I have to run ground from 100 amp main to water meter and install ground rods when I change out current galv water line.


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