Calling electrical gurus............the tester reads one green light and 2
not lit which it says means open neutral. Can someone tell me what that
means and what conditions I need to look for to correct the problem. If it
means the neutral is not connected I don't understand how the circuit would
have power. I added a branch line using Romex. I connected the romex in
the existing metal box with the existing BX cable if that adds any useful
info. The BX cable is connected directly to the main panel. I don't know
if this condition existed before I added the branch receptacle. Thanks for
you usual good support. John
Thanks for the input. I still don't understand how the circuit can have
power in it if the neutral is not connected. Is there a tutorial somewhere
anyone might know of that could explain these basics. Thanks again. Best
to all in the new year.
John, you can have"power" which is to say the hot leg is live, but to
complete the circuit you need to have a continuous neutral as well. The
ground wire and the neutral essentially go to the same place, so you will
get a reading using it
If real loads like lamps work, then you're right, the hot and neutral
must both be basically ok.
If there's really no neutral then I agree that I don't understand how
the tester "has power". Might it use the ground? Hmmm.
Anyhow, be aware that these LED testers can show random results if
anything is plugged in to any other socket on the same circuit. Might
this be the case?
Those little LED testers are nothing more than three LED and series
dropping resister pairs, connected between hot&ground, hot&neutral,
If your neutral wire is out, only the hot&ground light will go on.
It's supposed to have hot&ground and hot&neutral, but not neutral&ground
If the neutral&ground comes on, your hot and neutral are probably reversed.
[Reversing hot and ground takes some doing.]
Only in extremely unusual circumstances that _also_ mean something's
wrong with the circuit.
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.
Except for a multiwire circuit, which I presume this is not if you installed
it, you must have a neutral for a circuit. But do you have a circuit? You
did not say if the outlet works properly. Why were you testing it?
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