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Old 07-31-2016, 10:53 AM   #11
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Awesome! Thanks all. I've got it now. I appreciate the links. So....all of the 50A outlets are technically 240, but the camper wiring splits it? Why all the warnings at the dealership?


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Well some people get a 30 amps RV receptacle installed at 240 volts instead of 120 volts and then damage there RV appliances when hooking up, even some electrician get's it wrong....
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Old 07-31-2016, 10:56 AM   #12
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And most salesmen don't have a clue and only repeat what they've been told or think they know.


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Old 07-31-2016, 10:56 AM   #13
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Originally Posted by tmsbandman View Post
Awesome! Thanks all. I've got it now. I appreciate the links. So....all of the 50A outlets are technically 240, but the camper wiring splits it? Why all the warnings at the dealership?


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Because we see and have many horror stories on these forums where a 30 amp 3 wire outlet gets wired for 240 volts. We've even had members who have used an adapter cord on their 50 amp 4 wire rigs, to be able to plug into a miswired 240 volt 3 wire outlet and fry their stuff.

It happens, and more times than not (as reported here), it is a professional electrician who miswires the 30 amp outlet... as they are not familiar with an RV wiring and think the plug looks like an old appliance plug.

This is why I emphasized making sure you read on how to test outlets BEFORE plugging in.
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Old 07-31-2016, 11:12 AM   #14
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Had a electrician install a 50amp at our house, handed him the print out of what was required for a rv outlet and we both tested it before he left.

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Old 07-31-2016, 11:17 AM   #15
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Here are just a few recent links I have been involved in where a 30 amp 240 outlet was installed. Since a 50 amp is a different beast, it's not usually a problem....just the 30 amp outlets.


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Old 07-31-2016, 11:34 AM   #16
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Awesome! Thanks all. I've got it now. I appreciate the links. So....all of the 50A outlets are technically 240, but the camper wiring splits it?

You can think of it that way..... or that it is only 240 volts IF the two 120 volt legs are combined somewhere. As long as they are kept split/separate, then everything stays 120 volts from the service.

You can get 120 volts OR 240 volts from a 120/240 SPLIT phase service. For our RV purposes, we utilize just the 120 volts scenario.
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Old 07-31-2016, 12:41 PM   #17
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Fonzie's "RV Electrical System" link also has an good overview of power management protection devices (aka Progressive Industries or Surgegard). Get one-use it-best insurance you will ever buy.
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Old 07-31-2016, 01:34 PM   #18
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50A 240V service is required if you want to run air, microwave, etc. just make sure you use the correct gauge wire for the distance run, probably 8 or 6 gauge. If it's for storage and loading only you could get by with as little as 20A. If you want to run air I would go for the 50A.
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Old 07-31-2016, 01:42 PM   #19
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Yep. Great info. Thank you all. I even called the service guy that gave us "the show." He said "Oh yeah. 50 is fine. Just watch out for 30". Apparently there are campgrounds with 240v/30A receptacles. Will look into the surge protectors


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Old 07-31-2016, 02:33 PM   #20
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Awesome! Thanks all. Why all the warnings at the dealership?


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Because it would be easy for someone not familiar with RV 50 amp service to wire your receptacle with 240 referenced to neutral instead of 120. Your RV would be very unhappy if you provided 240 instead of 120.
I'm sure there are some who have experienced this unpleasant situation so you have helped yourself by asking here.
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