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Thread: Color code 220 volt

  1. #1
    Join Date
    Jan 2005
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    4

    Color code 220 volt

    I am designing controls that use 220 volt single phase to supply Power. My question is what is the proper color for the wire leading from the main disconnect on the Panel to (2) ( line side )devices in the Panel everything else is 24vdc.

  2. #2
    Join Date
    Feb 2003
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    Florida
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    Re: Color code 220 volt

    Any colors you want other than green or white.
    Bryan P. Holland, MCP

  3. #3
    Join Date
    Dec 2004
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    North Carolina
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    Re: Color code 220 volt

    Originally posted by bphgravity:
    Any colors you want other than green or white.
    or orange unless there is a high leg
    Mike Whitt
    God answers Knee-Mail.

  4. #4
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    Florida
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    Re: Color code 220 volt

    Thats not true, I can make them both orange if I were so inclinded. What section says I can't make my single phase ungrounded conductors orange?
    Bryan P. Holland, MCP

  5. #5
    Join Date
    Feb 2003
    Posts
    104

    Re: Color code 220 volt

    The previous posts are correct regarding the NEC requirements for the color code. But, many companies do have an internal color code and they vary from one to another. The bottom line is if you are designing it for a customer, then ask them if they have an existing color code.

    A pretty standard color code used is:
    480VAC black
    120VAC-red
    120VAC neutral - white
    24VDC(+) - blue
    24VDC(-) - blue w/wh stripe
    *Yellow wire for AC voltages that orignate elsewhere and that the local disconnect doe not turn off. (sometime yellow w/blue stripe for DC).

    Just make sure every wire has a wire # and good labels are used.

  6. #6
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    Jul 2003
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    Re: Color code 220 volt

    or orange unless there is a high leg
    I agree with Bryan. High leg conductors if present must be orange. This doesn't prohibit the use of orange conductors if you want.
    Rob

    Chief Moderator

    All responses based on the 2011 NEC unless otherwise noted

  7. #7
    Join Date
    Mar 2003
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    New England
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    Re: Color code 220 volt

    Wait a second....orange is one of the options, but I am not required to use it to identify the high leg.

    Let's not forget the rest of the sentence in 110.15: "...or by other effective means."

    So I can use orange, or whatever means that I deem effective. Pink, purple, yellow, brown..whatever.

  8. #8
    Join Date
    Jul 2003
    Location
    New Jersey
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    Re: Color code 220 volt

    Let's not forget the rest of the sentence in 110.15: "...or by other effective means."

    So I can use orange, or whatever means that I deem effective. Pink, purple, yellow, brown..whatever
    You are correct 110.15 does mention "other effective means" but by using a color other than orange have you satisfied the intent of "other effective means" or does this apply to something else such as a sign at the panelboard?
    Rob

    Chief Moderator

    All responses based on the 2011 NEC unless otherwise noted

  9. #9
    Join Date
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    TAMPA FLORIDA
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    Re: Color code 220 volt

    You can not use white,gray,or green.Normal colors for this install would be L1=BLACK L2= RED.however nothing in nec says you can not use other colors
    Tampa Florida

  10. #10
    Join Date
    Apr 2003
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    Westchester County, New York
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    3,552

    Re: Color code 220 volt

    If you are installing a cable assembly, and the voltage is 50v or more, you can use the white conductor as a phase conductor.
    200.7(C)(1)

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