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Voltage Drop at Lamp Post

I have 120v leaving the switch to an outdoor lamp post. The voltage at the post is 24v. It is a direct run buried to the post with no junction boxes, etc. Where might the problem be? Nothing was done to the circuit prior to this problem.

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November 3, 20170 found this helpful
Best Answer

Voltage drop -

  1. What is on your circuit?
  2. Have you added anything in your home lately?
  3. Have you switched out some appliances from one circuit to another?
  4. You must first determine what has changed in your home.
  5. If nothing has changed and the cable is run underground you could have a problem with the cable.
  6. Did you install the cable using the correct underground cable tube to protect your cable?
  7. You will need to dig up the cable and find out if there is an issue with the cable and the tube it is running in.
  8. You could have a problem with a cable breakage and he cable is rotting under the ground.
  9. I hope you have bought a special cable to run under the ground to your lamp post. This is also important when running your cable underground.
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  11. Have you done any sort of digging around or near the cable to the lamp post? This could be a problem and you might have nicked the cable.
  12. Check all of this to determine where the cable is shorting out and why the current isn't passing through the cable now.
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November 3, 20170 found this helpful

Must be a rotted cable. Nothing done to the circuit as far as I can tell. Old cable, poorly protected at first installation. Hoping I wouldnt have to dig up. 2-1/2 feet of asphalt on top. Big pain in butt. Thanks for answer

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November 3, 20170 found this helpful

Have you checked the fuse box and flip every switch too see if that helps...

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