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Old 12-19-2012, 10:51 PM   #11
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Here is a typical rv 50 amp plug. This is the same as many house appliances.

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-The left and right poles are "x" & "y" which is for red and black positive wires (doesn't matter which is lt or rt).
- The upper straight pole is neutral- usually white wire.
- the lower D looking pole is ground- normally bare or green wire

The 50 amp- again 50 amp plug such as pictured above is wired the same for rvs and house 220. Each positive pole is 110 volts measure from 1 positive pole to ground, but if you measure across both positive poles with a volt meter the result will be 220 volts. The rvs internally just use each pole seperately, where house appliances use both poles combined.


Fyi- every individual line going into your house is 110 volts +- 5%

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Old 12-19-2012, 10:53 PM   #12
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Join Date: Jul 2011
Location: SD
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The RV is either 30 Amp/120 Volt or its 50 Amp/240 Volt. If it has 4 prongs its 50 amp. If it has 3 prongs its 30 amp. If you don't know what you're doing, hire someone that does. Not the guy at the hardware store or your some guy that your buddy knows. You'll be happier with the end result if its done by a professional. I do electrical work for a living and I run into some real hack jobs that I have to fix and its usually tougher when someone started out wrong.

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