voltage loss

george2010February 10, 2010

iam only getting 80v on one leg of a 220v circuit, it is direct burial al used to feed a pump and out building. i am suspecting i will have to replace the cable but i would like to know what might have caused this or is there a possible fix?

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What is the line-to-line voltage?

80 volts, but to what? Are you using a real grounding conductor for this measurement?

    Bookmark   February 10, 2010 at 7:53PM
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What are you using to make the measurement?

Digital meters have very high input impedance, and can indicate 80 V from an open conductor that runs in a cable by coupling from another conductor in the cable.

    Bookmark   February 11, 2010 at 8:48AM
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Occasionally I come across what may be this same problem. Check the voltage coming off the breaker. Check each line to ground and then to each other. It may be a bad breaker.

Hope this helps.

    Bookmark   February 13, 2010 at 2:55AM
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You will have to either turn the other breaker off while checking each line to ground, or undo the the termination points of the wire at the pump. What can happen is the voltage from one leg will go through the pump and return on the other leg with a drop, if the other leg is not getting voltage.

    Bookmark   February 13, 2010 at 3:05AM
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