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Old 12-19-2012, 02:35 AM   #1
nutty_gnome
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Default testing a 240 outlet

I've got a multimeter.

I have an outlet with 3 openings spaced 60deg around the outer edge with a hole in the middle (which may be for a recessed screw? can't see into it it is out of the way behind a dryer).

I think it looks a LOT like this: http://www.justanswer.com/uploads/Edward67/2007-12-05_204620_dryer_outlet.jpg

It is wired into the panel but I haven't taken the panel apart to see whats up. Is there a simple way to test if the outlet is live with 220 or 240v using the multimeter? If so, what goes where and what reading would I be looking for?

Any advice is appreciated. Thanks!



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Old 12-19-2012, 02:56 AM   #2
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Hot to hot will measure 220v ac. Hot to gnd or hot to neutral will measure 110v ac.



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Old 12-19-2012, 04:10 AM   #3
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you may find voltages anywhere between 220-255volts. dont be surprised if you your voltage isnt dead on 240.

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Old 12-19-2012, 11:04 AM   #4
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Set your multimeter to Voltage - AC; shove the red probe into one of the openings; shove the black probe into another opening; wiggle probes around while watching meter to see if you get a reading.

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Old 12-19-2012, 11:22 AM   #5
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Quote:
Originally Posted by jCOSbrew View Post
Hot to hot will measure 220v ac. Hot to gnd or hot to neutral will measure 110v ac.
This, except I would expect 120VAC and 240VAC.

Also, doesn't matter which color probe you put in the holes. It will read the same regardless.
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Old 12-19-2012, 01:04 PM   #6
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I didn't find any power in it with the multimeter. And now it looks like a relic from the last version of the electric panel. oh well. Thanks for the input.



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