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Old 11-19-2009, 06:14 PM   #1
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Are these code violations


1. I opened up a junction box and I see colored wire( red, purple) used for "hot" wire instead of black. Is it a code violation to mix colored wires? I know you always have to use white for neutral and green for ground but can I tap new blue hot wire to an existing red hot wire?

2. Can you run #14 wire with #12 wire( I think this is 20 amp) in the same conduit or should they be all the same size?


Thanks.
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Old 11-19-2009, 06:25 PM   #2
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Originally Posted by kupalino View Post
1. I opened up a junction box and I see colored wire( red, purple) used for "hot" wire instead of black. Is it a code violation to mix colored wires? I know you always have to use white for neutral and green for ground but can I tap new blue hot wire to an existing red hot wire?

2. Can you run #14 wire with #12 wire( I think this is 20 amp) in the same conduit or should they be all the same size?


Thanks.
1) Is not a Code violation; 2) is!!!!
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Old 11-19-2009, 06:27 PM   #3
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Where are you located ?
Red wires are used as hots

You can't connect #14 wire to a 20a 12g circuit
You can run different gauge wires for different circuits in the same conduit
So long as the conduit fill is not exceeded



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Old 11-19-2009, 06:29 PM   #4
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1: Any color for hot except white or green

2: If you are talking about mixing different sizes in conduit, that's OK as long as you allow for derating and follow fill rules.
If you are talking about mixing 14 and 12 on the same circuit, then you must protect that circuit according to the lowest gauge wire... in this case 15A.
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Old 11-19-2009, 06:39 PM   #5
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thanks for the replies.

I'm not connecting #14 wire with #12 wire . Just that they will be both run inside the same conduit.
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Old 11-19-2009, 07:24 PM   #6
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Both in the same conduit is fine
I think Sparky thought (like I did initially) that you wanted to add 14g to 12g circuit



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Old 11-19-2009, 08:18 PM   #7
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I wanted to tap #14 new circuit blue hot wire to #14 existing red hot wire. Is that OK?
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Old 11-19-2009, 08:39 PM   #8
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Where are you located ?
Here in the US I have only used red & black as true hots
Never seen purple or blue - except at the store



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Old 11-19-2009, 08:50 PM   #9
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We use purple, pink, yellow, orange, brown, blue, red, black for hot lines all the time.

You can't use green, white, or gray as those colors are reserved for grounds, and neutrals, respectively.
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Old 11-19-2009, 09:56 PM   #10
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Quote:
Originally Posted by kupalino View Post
I wanted to tap #14 new circuit blue hot wire to #14 existing red hot wire. Is that OK?
Yes.
You can also use white or gray for hot as long as they are permanently re-identified and as long as they are not used as a return to an outlet.
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Old 11-20-2009, 01:10 PM   #11
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Originally Posted by Scuba_Dave View Post
Where are you located ?
Here in the US I have only used red & black as true hots
Never seen purple or blue - except at the store
They (Purple and Blue) along with Orange are used in the higher Voltage range (above 250V. 277V., for example.) I once worked on a team where we rewired an entire floor in a famous commercial building in Manhattan for a lawyer's office. They needed an extraordinary amount of lights. It was decided to power the lights on 277V. All the colors except Red, White and Black were used. Gray was the Neutral. To distinguish bet. 120V.
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Old 11-20-2009, 09:57 PM   #12
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Quote:
Originally Posted by hayewe farm View Post
Yes.
You can also use white or gray for hot as long as they are permanently re-identified and as long as they are not used as a return to an outlet.
Only if part of a cable, like nmb, mc.
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Old 11-20-2009, 11:11 PM   #13
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Quote:
Originally Posted by kbsparky View Post
We use purple, pink, yellow, orange, brown, blue, red, black for hot lines all the time.

You can't use green, white, or gray as those colors are reserved for grounds, and neutrals, respectively.

As KBsparky qoute with the colours that is common colours in North America side however if you get into European side it will turn you upside down a bit I allready memorized more than 6 colours combations in France and a bit with old UK colours so that is 6 I know { yeah there is more on other part of European area but too long to list } Plus the North America combations as well both 120/240{208 as well } volts plus 480Y277 volts circuit colours

IF you are ciruious about French colour codes plus part of UK colour codes I will be more than happy to list it

Merci,
Marc
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Old 11-22-2009, 01:17 AM   #14
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As mentioned by the OP, the system is in conduit. Here in Chicago, everything is run in EMT. Purple is a very common switch leg color or a load side GFCI conductor identification. If it's nowhere near a kitchen and not in a ceiling box, then it is "probably" a hot. If it's a load side of a GFCI, then it will be protected by that outlet. But you will be in the dark if the outlet trips on a fault.
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Old 11-27-2009, 12:04 PM   #15
 
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I have seen many panels that use a 2-pole breaker with black and white wires feeding an electric heater. I would use red tape around the white wire to signify it is hot on both ends.
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