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Thread: Antioxidant Paste

  1. #1
    Join Date
    Feb 2006
    Posts
    2

    Antioxidant Paste

    Does the NEC require the use of an antioxidant when making connections involving aluminum conductors? If so, please cite the section and paragraph of the NEC that requires it.

  2. #2
    Join Date
    Jun 2005
    Location
    North Logan, Utah
    Posts
    7,950

    Re: Antioxidant Paste

    No.

    Not unless it is a installation requirement of a specific manufacturer.

    Chris

  3. #3
    Join Date
    May 2004
    Location
    Indianapolis, IN
    Posts
    701

    Re: Antioxidant Paste

    110.14 adresses it, but doesn't require it.
    Brad Darnell
    Master Electrician -Electrical Contractor
    IN-NJ-WI-CT-LA-OH-KY-TX-FL-NV-GA-TN-MS-OK-IL-NC-AL-KS

    "The Code doesn't say what you think it says" - Charles E. Beck, P.E.

  4. #4
    Join Date
    Feb 2003
    Location
    Florida
    Posts
    7,286

    Re: Antioxidant Paste

    Here's the statement by UL,

    Conductor Termination Compound — Some connectors are shipped pre-filled with conductor termination compound (antioxidant compound). For non-prefilled connectors, conductor termination compound may be used if recommended by the connector manufacturer as preliminary preparation of the conductor. Wire brushing of the conductor may also be performed if recommended. Also see Conductor Termination Compounds (DVYW).
    Bryan P. Holland, MCP

  5. #5
    Join Date
    Feb 2003
    Location
    Massachusetts
    Posts
    49,214

    Re: Antioxidant Paste

    How do you get the wires to swallow the pills?


  6. #6
    Join Date
    Jul 2005
    Location
    Tennessee
    Posts
    12,848

    Re: Antioxidant Paste

    duh! hide them in a piece of candy
    and I thought you were and electrican !

    [ February 07, 2006, 04:23 PM: Message edited by: augie47 ]
    At my age, I'm accustomed to restaurants asking me to pay in advance, but now my bank has started sending me their calendar one month at a time.

  7. #7
    Join Date
    Dec 2005
    Posts
    434

    Re: Antioxidant Paste

    Greg......moving to Viginia

  8. #8
    Join Date
    Apr 2003
    Location
    Planet macmikeman
    Posts
    3,040

    Re: Antioxidant Paste

    Mixed with tequilla?

    [ February 07, 2006, 07:39 PM: Message edited by: macmikeman ]
    85deg. an Sunny today.

  9. #9
    Join Date
    Jan 2006
    Location
    Martinsburg, WV
    Posts
    178

    Re: Antioxidant Paste

    Crush to a fine powder. Add very little water to create a pasty coating, then apply to surface.



  10. #10
    Join Date
    Feb 2006
    Posts
    2

    Re: Antioxidant Paste

    Thanks for all of your replys guys, it's what I expected - that it's not required by the NEC. The reason I asked is that my electrician client is being sued because a 200A distribution panel that he installed 6 years ago failed and started a fire. The failure was at the 200A, 2-pole main CB which was completely destroyed. The expert hired by the homeowner's insurance company said that the failure was probably because the electrician had not applied antioxidant paste to the 4/0 aluminum service cable before he inserted the cable into the CB lugs. He said the antioxidant paste was required by the NEC, but damn if I could find it.

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