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Old 12-26-2007, 11:33 AM   #1
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Quick question (I think)


I have a hot wire (capped w/ wire nuts) running to a box awaiting an outlet. From this same box is a wire (not connected to ANYTHING) running to another box, also awaiting an outlet.

The induction type circuit tester shows BOTH wires to be hot, but the voltmeter indicates that there is no current flowing through the unattached wire.

Is the second, unattached, wire picking up some minor current from the hot wire by induction?

Thanks,
Potomac101

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Old 12-26-2007, 06:25 PM   #2
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Quick question (I think)


probably.

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Old 12-26-2007, 07:35 PM   #3
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Quick question (I think)


Definetly maybe.
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Old 12-27-2007, 04:42 AM   #4
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Quick question (I think)


How is it that the unattached wire shows a current with the induction tester but nothing with the voltmeter?

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Old 12-27-2007, 06:46 AM   #5
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Quick question (I think)


Phantom voltage
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Answers based on the 2008 & 2011 NEC.
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Old 12-27-2007, 06:25 PM   #6
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Quick question (I think)


Spooky scary bloodsucking phantom voltage that disappears when a load is applied to the wires. There is a cool demonstration on a pro's site that shows 120V worth of induced voltage on a wire that is completely unattached from any power source. This is why solenoid type testers are the best, in my opinion for homeowners. They apply a small load (voltage makes them vibrate, often) and make the scary voltage go away.

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Old 12-28-2007, 11:54 AM   #7
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Quick question (I think)


Andy, I havent had/used a wiggy in many years. But your statement has got me thinking about going out and getting one.....Thanks John

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