Quote:
Originally Posted by MLP
I have used both and installed a thirty amp unit into a class C and a 50 amp in a fifth wheel. I still have my external one, but check the power on the post using a volt meter. I also have a non contact voltage tester to make sure that the post is not hot or have a floating ground.
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The only thing the Non contact tester will tell you is there is some sort of voltage present. It can tell you nothing about the ground or neutral or which wire the voltage is on. Be safe.