Ohms on a branch circuit

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ron said:
Unless the receptacle was the only one on the circuit, I would think return current on the neutral from other receptacles would mess up your ohm measurement,
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The first step before taking an ohm measurement should be to check whether there is a voltage difference between the two points.
To some extent the existence of an AC voltage difference may not necessarily affect the result of a DC ohm check. It depends on the test circuit design.

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We have a customer who bought a " plug" tester made by the people who make green tools. Not greenlee. He says if it detects 10 ohms or more it lights up red.
I checked at the panel from neutral to ground ( all bonded at the first disconnect) it read 0. I checked at the outlets he checked and it read .01.
Now he feels like he just got a bad tester and is gonna return it for another one.
All bs aside I don't know enough info to give him a real answer or how to honestly explain what it should read safely.


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electricalist said:
We have a customer who bought a " plug" tester made by the people who make green tools. Not greenlee. He says if it detects 10 ohms or more it lights up red.
I checked at the panel from neutral to ground ( all bonded at the first disconnect) it read 0. I checked at the outlets he checked and it read .01.
Now he feels like he just got a bad tester and is gonna return it for another one.
All bs aside I don't know enough info to give him a real answer or how to honestly explain what it should read safely.


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Click to expand...

I would think it should "red" well before 10 ohms. Pure waste of pennies.
 
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