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Old 01-17-2011, 10:52 AM   #1
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Mild zap


I have a little PA System, and a guitar amp in my old house. The PA is plugged into one circuit, and the amp into another. When I turned them both on, I got a bit of a mild shock sensation from the microphone connected to the PA when I played the guitar thru the amp. I decided to test the outlets. One is wired/grounded correctly (PA/Mic) the other (guitar/amp) has hot and neutral reversed. I'll change it, but if this is the cause, is there potential for bigger a shock?

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Old 01-17-2011, 11:52 AM   #2
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Mild zap


Do both the PA and Amp have a three prong power cord? Are both receptacles on the same circuit / circuit breaker?
Remove power to the receptacles and pull them out an inspect the connections and make sure there is a ground wire connect to the ground screw on each receptacle.

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Old 01-17-2011, 03:36 PM   #3
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Mild zap


I'll pull it apart and check it out. I was just wondering if using a PA/microphone plugged into a correctly wired outlet, and holding a guitar plugged into a different and incorrectly wired outlet might produce some potentially odd electrical flow .
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Old 01-17-2011, 04:16 PM   #4
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Mild zap


If you are getting a tingle something is wrong somewhere. You didn't answer my question about the power plug - do both have a three prong power cord?
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Old 01-17-2011, 04:22 PM   #5
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Mild zap


3 prong, to be sure. PA is correct and grounded, other plug (guitar amp)is for sure hot/neut. reversed, and grounding is what I'm going to check into.
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Old 01-18-2011, 12:54 AM   #6
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Mild zap


Quote:
Originally Posted by Ontareo View Post
I'll pull it apart and check it out. I was just wondering if using a PA/microphone plugged into a correctly wired outlet, and holding a guitar plugged into a different and incorrectly wired outlet might produce some potentially odd electrical flow .
yep now you know why they must be wired correctly

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