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no voltage between legs of a 230v single phase circuit no voltage between legs of a 230v single phase circuit
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Old 02-14-2010, 03:38 PM   #1
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Default no voltage between legs of a 230v single phase circuit
What's the most common cause of a previously functioning single phase 230v circuit to lose voltage between its two legs? All wiring connections from appliances up to the meter are sound and I have voltage on each leg, but only read 11 volts between legs. I went to fix an electric furnace, but that wasn't the problem!

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Old 02-14-2010, 03:43 PM   #2
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What's the most common cause of a previously functioning single phase 230v circuit to lose voltage between its two legs?
Most common? Breaker is open.

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Old 02-14-2010, 03:55 PM   #3
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Maybe you missed the part where I said I had voltage on each leg?
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Old 02-14-2010, 04:00 PM   #4
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Maybe you missed the part where I said I had voltage on each leg?

Do you believe in "ghosts"????
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Old 02-14-2010, 04:00 PM   #5
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Maybe you missed the part where I said I had voltage on each leg?
What were these readings and was it connected to load at the time?
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Old 02-14-2010, 04:01 PM   #6
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114v and 124v to ground, not connected to a load.
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Old 02-14-2010, 04:06 PM   #7
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Ghost voltage could definitely be an explanation. My readings were taken on a fieldpiece multimeter. When main breaker was tripped and reset problem stopped then started again a short while later. I'm thinking I have a bad connection on the power company side of the meter, but I'm just an HVAC tech so I have limited experience with power supply to a home.
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Old 02-14-2010, 04:09 PM   #8
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might want to buy a knopp
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Old 02-14-2010, 04:17 PM   #9
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I'll look into that, thanks. It's not really my problem, I told the HO to call an electrician. I will go back when un-interrupted power to my equipment is restored. Company policy dictates we are not interested in the rest of the home's wiring problems, just our equipment. I was just hoping to learn something about what caused it.
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Old 02-14-2010, 04:26 PM   #10
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I looked around the site a bit and gained some awareness. I'll go ask on the DIY site. Thanks for the help.

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