sbowman871

Wilmington, Ohio

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Im planning to install a 50/30/20 amp electrical receptacle box outside on my barn. My TT only requires the 30 amp but i'm planning ahead in case I step up and need 50 amps for a future rig. I know the 30 and 20 will be 110 volts. What about the 50 amp, is it also wired at 110 volts?
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ScottG

Bothell Wa.

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50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
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Gene&Ginny

North Kingstown, RI

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Here is one place to look, click here
As belairbrian said, many horror stories of licensed electricians doing it wrong.
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sbowman871

Wilmington, Ohio

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ScottG wrote: 50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
No. I have a licenced electrician lined up for the instal.
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belairbrian

Alabama

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sbowman871 wrote: ScottG wrote: 50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
No. I have a licenced electrician lined up for the instal.
Might want to make sure he is familiar with RV plugs. More than one horror story has been posted here, where a "licensed' electrician saw a30 amp RV plug and wired it like a three prong dryer plug (220v). Then the owner plugs in and gets to replace a bunch of stuff.
Actually happened to a co-worker last fall, when a friend (also and electrician) did it.
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belairbrian

Alabama

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belairbrian wrote: sbowman871 wrote: ScottG wrote: 50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
No. I have a licenced electrician lined up for the instal.
Might want to make sure he is familiar with RV plugs. More than one horror story has been posted here, where a "licensed' electrician saw a30 amp RV plug and wired it like a three prong dryer plug (220v). Then the owner plugs in and gets to replace a bunch of stuff.
Actually happened to a co-worker last fall, when a friend (also and electrician) did it.
Can't find the link right off but someone please provide the link to the RV pedestal wiring site.
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JJBIRISH

Butler, PA, USA

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read this link
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aftermath

Washington State

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ScottG wrote: 50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
Is this true? I don't think any RV service is 220V. I have a pigtail that adapts 50 AMP to 30 AMP. If it was 220V it would fry my entire system.
Help me on this one.
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belairbrian

Alabama

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aftermath wrote: ScottG wrote: 50 amp RV is exactly like your electric range plug - 50A/220V.
Are you planning on doing this yourself?
Is this true? I don't think any RV service is 220V. I have a pigtail that adapts 50 AMP to 30 AMP. If it was 220V it would fry my entire system.
Help me on this one.
It is accurate but you need to understand how it is wired inside the rv. The 50 amp plug has 2ea 110v legs, one neutral leg and one ground leg.
220v means you would read 220v if you connected a voltmeter acroos BOTH of the 110v legs. This has to do with the phase of the power on each leg. If you read the power from either "HOT" leg to neutral you would see 110v.
Most 50 amp RVs have 2 110v circuits. There are a few that actually use 220v to run some equipment.
As to why the 50 to 30 amp adapter works. The adapter connects to ONE hot leg, the neutral, and the ground. The extra Hot leg is not connected.
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sbowman871

Wilmington, Ohio

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Gene&Ginny wrote: Here is one place to look, click here
As belairbrian said, many horror stories of licensed electricians doing it wrong.
Thanks G&G. That's exactly what I was looking for.
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