Aluminum pigtails from certain fixtures

Discussion in 'Electrical Forum discussion & Blog' started by Basement_Lurker, Oct 25, 2007.

  1. Basement_Lurker

    Basement_Lurker One who lurks

    Messages:
    668
    Location:
    Victoria, BC
    Why do some fixtures come with what appears to be stranded aluminum? The instructions says it is to be used in copper installations (it's a leviton timing switch). The leads coming from the switch look like stranded aluminum, and I have seen this on some lighting fixtures as well. So my questions are:

    1) Is this actually stranded aluminum?
    2) What is the risk (if any) of connecting these leads to a copper pigtail?

    thx
  2. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,534
    Location:
    North Carolina
    Could it be tinned copper that you are looking at?
  3. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,023
    Location:
    New England
    It's highly unlikely that it is aluminum. As noted, it is probably tinned copper strands (which costs more and is less likely to corrode). If you cut them and look carefully at the end with a magnifying glass, you'll probably see copper colored metal in the middle.
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