55 Volts from Hot to Metal Box

2 replies [Last post]
Buba's picture
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Joined: 2016-10-17

HI all can not understand how I get 55 volts from hot to a metal box that does not have grounds but is gfci protected and on arc fault breakes from a sub panel with 4 wire going to it neutral and ground seperated checked the neutral and ground at service with ohm meter clear everything seems to work fine but do not see why I would be getting it .thanks hope someone can help me understand

cktbrker's picture
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Joined: 2013-10-30

It sounds like you are missing the ground at the service main where the neutral conductor should be connected to earth, just like a control transformer 230V-115V and unless the neutral is grounded the voltage from hot to ground would be 55V-90V. Just a couple of things to ponder. Good luck.

Buba's picture
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Joined: 2016-10-17

I'm getting 120V from main breaker to neutral on each phase. Also, No. 4 bare to cold water pipe and No. 6 to ground rod. Everything reads good and works right.

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