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install challenge question

Discussion in 'Landscape Lighting' started by David Gretzmier, Apr 3, 2011.

  1. steveparrott

    steveparrott LawnSite Bronze Member
    Messages: 1,276

    Good challenge question - thanks for sharing it.

    I think I did get the right answer in saying that it was just a few strands connected in a wire but never would have guessed it to be in the middle of the wire.

    I have seen this happen in a transformer power cord, especially right next to the plug. That can happen if the installer bends the cord trying to close the GFCI cover.
  2. Alan B

    Alan B Sponsor
    Male, from tampa, fl
    Messages: 446


    thx for sharing. usually wire has signs of damage--first time i've heard of internal wire damage with outside looking proper.

    Steve thx for the kind words... i'm healing up pretty quick.
  3. emby

    emby LawnSite Senior Member
    from Ontario
    Messages: 380

    Thanks David for sharing with us,

    I have seen this many times in the electrical field especially when stranded wire types are involved. I have been told that when they switch over to a new run there is a possibility of the connection being compromised. With wire types such as THHN or T90 you can slightly see a little bump on the skin of the wire where the connection has been made.
    Good catch as it usually is the last thing you think of when trouble shooting.

  4. David Gretzmier

    David Gretzmier LawnSite Gold Member
    Messages: 3,645

    well, I'll be honest, had the light not already been mounted in the tree, I would probably have just replaced it and sent it for replacement to alan over at LLW. and although it sounds like a quick fix, I went through everything that folks mentioned her as I have seen all those things happen: bad brand new bulb, a bad connection at splice, bare wire grounded to fixture, nicked wires, bad sockets, pins, even an issue with where the socket wires are heat shrinked to the lead inside the fixture. I have seen leads that failed because of a broken connection inside the insulation and it looked stretched.

    but since this was a new problem, I was stumped by this as well until I started cutting the lead wire.

    and I will give steve partial credit. he was correct in just a few strands of wire, but I was looking for the middle of the wire. and I have never seen the trans cord do this, but now I know it can happen.

    good responses all.
  5. RLI Electric

    RLI Electric LawnSite Senior Member
    Messages: 381

    I have come across that is spools of romex before. I have also seen in romex where the jacket looks fine but the hot and neutral are fused together (short circuit) inside a normal looking cable. Tough to find these.

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