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Old 09-14-2015, 01:32 PM   #1
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Electrical Question

My trailer has 50 amp service. I have a dogbone adaptor to go to 30 amp 125v for areas that don't offer 50 amp.

My garage has a 30 amp 250v plug that my dogbone won't plug in to, I'm assuming because it's different voltage. Despite some google searching I can't seem to find an adaptor to go from the dogbone to the wall outlet.

Can this be done? Is it safe? It'd be nice to be able to run one a/c when it's in my driveway for maintenance or cleaning days. I am clueless as far as electrical stuff goes... Thanks!
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Old 09-14-2015, 01:57 PM   #2
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That's a 250volt plug and the RV's 110 so the are not compatible, you'll damage the RV plugging in there. Get an electrician to install a 30amp outlet not expensive.
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Old 09-14-2015, 01:57 PM   #3
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The reason your dogbone won't plug into the 30A 250 V receptacle is because the 30A to 50A dogbone is meant to be plugged into a 30A 120V receptacle. You will need to have a 120V circuit run with the proper receptacle.
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Old 09-14-2015, 02:01 PM   #4
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Good to know, thanks!
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Old 09-14-2015, 02:04 PM   #5
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My trailer has 50 amp service. I have a dogbone adaptor to go to 30 amp 125v for areas that don't offer 50 amp.

My garage has a 30 amp 250v plug that my dogbone won't plug in to, I'm assuming because it's different voltage. Despite some google searching I can't seem to find an adaptor to go from the dogbone to the wall outlet.

Can this be done? Is it safe? It'd be nice to be able to run one a/c when it's in my driveway for maintenance or cleaning days. I am clueless as far as electrical stuff goes... Thanks!
Definitely call in a professional. Or at least a talented amateur. That outlet will NOT power an RV properly, regardless of any dogbone adapter.

Your RV needs 120/240 VAC @ 50A (4 wires). Get somebody that KNOWS what they are doing to get the correct receptacle installed near where you park your RV.
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Old 09-14-2015, 02:16 PM   #6
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Thank god it didn't plug in! That would've been exciting!
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Old 09-14-2015, 02:20 PM   #7
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Thank god it didn't plug in! That would've been exciting!
Wonder how much smoke??
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Old 09-14-2015, 02:32 PM   #8
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Wonder how much smoke??
A lot out of the TV's, microwave and converter to say the least.
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Old 09-14-2015, 03:10 PM   #9
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A lot out of the TV's, microwave and converter to say the least.
THAT is exactly why the plug/outlet configurations are nearly impossible to connect incompatible voltages.

There are some 15A/20A combinations that are interchangeable within voltage.

But outside of that, no 120VAC connector will fit a 240V and amps have to match.
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Old 09-14-2015, 04:52 PM   #10
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You're actually in a better place than you might think. The parts needed to change this over to 30a @ 115/120v are going to be pretty cheap. All you need is a new receptacle, a new single pole 30amp circuit breaker, and a panel filler plate. That's less than $40 in materials. Both applications call for a 3 conductor, 10 gauge wire so there's no need to run new wire. Any pro can do the entire project in less than an hour. Call in an electrician and count your blessings that you're getting off pretty cheap on this one.
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