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> Rv Electrical Plug Configuration, 220 volt, 50 amps
FosterImposters
post Sep 9 2009, 04:31 PM
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Preparing to join family this fall in the Midwest, and have a question: thought I'd discover if any of you all may help.

I'm thinking that some of you (?) have their 50amp rigs housed beside your home/garage when not in use, and have already addressed the question with plugging your 50amp RV into the 220volt home/garage receptacles.

In year's past, we traveled in a 30amp Class C RV and could just plug-in at arrival at a correctly fused 110 volt outlet at the family's home/workshop at their ranch. Used one of their workshop outlets as this was traditionally used (and fused) for running all kinds of compressers, generators and tool-stuff. (They run a heavy equipment repair business).

Now we travel in a 50amp Class A RV. All the 220 volt equipment and plugs (at their workshop) have what they call a 'crowsfoot' configuration...3 slots.

Do I just need to purchase a 'configuration adaptor' to fit our RV 50amp cord plug (one prong, one L-shaped and two flats), into their 3 slot 220volt receptacles?

I wish to arrive with the correct plugs/cords/adaptors... rolleyes.gif
Thanks for your insights folks.


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Denali
post Sep 10 2009, 11:59 AM
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QUOTE(FosterImposters @ Sep 9 2009, 03:31 PM) *
Now we travel in a 50amp Class A RV. All the 220 volt equipment and plugs (at their workshop) have what they call a 'crowsfoot' configuration...3 slots.

Do I just need to purchase a 'configuration adaptor' to fit our RV 50amp cord plug (one prong, one L-shaped and two flats), into their 3 slot 220volt receptacles?

I wish to arrive with the correct plugs/cords/adaptors... rolleyes.gif
Thanks for your insights folks.
If by 'configuration adaptor' you mean an RV "dog-bone adapter" that is used to allow you to plug your four-prong 50-amp RV into a three-prong 30 amp RV plug, then no. That would put 220 volts on your 110 volt equipment, allowing the blue smoke to escape.

An RV 50 amp system keeps the neutral and ground separated inside the RV. Older 220 volt systems in buildings, with those three-prong connectors, bond neutral and ground. If you jury-rigged an adapter to use one of those receptacles, you would have a dangerous situation.

Newer 220 volt wiring uses four-prong connectors similar to your RV, although the connectors are shaped differently.

The only good solution is to install a dedicated 50 amp RV plug. That's what we did.

(BTW, for some reason what we previously called 110/220 volt systems are now 120/240 volts.)

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Dave Rudisill
Coos Bay, OR


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Dave Rudisill
Fulltimer since 2002
2004 Beaver Monterey
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