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Old 03-30-2013, 09:48 PM   #11
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i would like to know what was miswired. i was treating the problem like he was 30 adapting to 50. i'm now trying to figure how it would work with the 30 trailer but not when adapted to the 50.
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Old 03-30-2013, 09:56 PM   #12
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i would like to know what was miswired. i was treating the problem like he was 30 adapting to 50. i'm now trying to figure how it would work with the 30 trailer but not when adapted to the 50.
He took his camper to his family's place which had a pre existing 50 amp outlet..
Bombdoc just used his dog bone adapter to go from 50 to 30 amp not even thinking the outlet was wired 220 or if it even mattered.
So no one technically wired it for the camper as it was already there most likely for a welder or something.

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Old 03-30-2013, 10:12 PM   #13
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New RV'er. Towed my new 32RCTS to visit family. Leveled the unit, and attempted to hook up the power. I know I have 50Amp service, but my father does not. He has a 30 Amp outlet on a pole in the yard. I hooked up the "dog bone" and plugged it in. Breaker popped in the breaker cabinet. Reset breaker. NOTHING. Got out the voltmeter. Power is present at the pole. He also has a 120v outlet installed. Checked it with meter. 123V present. Plugged it in to the 110V adapter and have nothing there either.

Is there a re-set button somewhere I am missing? What have I done?
Jim, from what I am reading he has a 50 amp service trailer. His father had a 30 amp service already installed but it was a 220 volt 30 amp service and not 110 volt 30 amp service.

The OP has a 50 amp trailer, which utilizes a 220 volt service. However, a 220 volt service is actually split into Two 110 volt services where the trailer plugs in at the pedestal. These RV's have nothing inside that uses 220 volts. If it did then it would combine the two 110 volt sides, instead of split them. That's what confuses a lot of people as they think their trailer is wired for 220 volts but it's not. It's wired to use TWO 110 volts inputs that are split from a 220 volt output at the pedestal.

By using the adapter, he actually only had one side of electrical input to his trailer, but instead of this one side being 110 volts as it should have been split at the pedestal, it was 220 volts.

I'm hoping by only shooting 220 volts thru one side of 110 volt input of this trailer, that any damage is minimal.

I would think anything that was wired for the other/second 110 volt input would be fine, as no electricity hit it......but here again I would need to see wiring schematics to see how everything is separated int he trailer.
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Old 03-30-2013, 10:19 PM   #14
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Jim, from what I am reading he has a 50 amp service trailer. His father had a 30 amp service already installed but it was a 220 volt 30 amp service and not 110 volt 30 amp service.

The OP has a 50 amp trailer, which utilizes a 220 volt service. However, a 220 volt service is actually split into Two 110 volt services as it enters these RV's and nothing inside uses 220 volts. If it did then it would combine the two 110 volt sides, instead of split them. That's what confuses a lot of people as they think their trailer is wired for 220 volts but it's not. It's wired to use TWO 110 volts inputs that are split from a 220 volt output.

By using the adapter, he actually only had one side of electrical input to his trailer, but instead of this one side being 110 volts as it should have been, it was 220 volts.

I'm hoping by only shooting 220 volts thru one side of 110 volt input of this trailer, that any damage is minimal.
Yes sorry I meant 30 amp 220 @ pole and a 50 amp camper service.
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Old 03-30-2013, 10:26 PM   #15
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it took me awhile...he apparently put one leg of the 220 on the neutral and the other on the hot. i can see that path. if that is what u just tried to tell me, i had to wrestle with it until it clicked. so apparently no one ever plugged into it with a 30A trailer.
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Old 03-30-2013, 10:55 PM   #16
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I would think anything that was wired for the other/second 110 volt input would be fine, as no electricity hit it......but here again I would need to see wiring schematics to see how everything is separated int he trailer.
Problem is the 220 VAC is applied in the 30A circuit with 110 volts down each of the hot and neutral leads. If the loads are not on such as A/C they will be spared. However forget Microwaves, TV's or any other device using 24/7 circuits with presets or clocks. The 30 amp breaker clears when these devices shortout with double voltage. This power problem happens mostly in the Spring when folks forget what they learned last year!
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Old 03-30-2013, 11:08 PM   #17
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The outlet must have been changed to accept the RV plug. A welding outlet looks the same but the blades are different. They are made this way so you cannot plug into the wrong outlet.
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Old 03-30-2013, 11:13 PM   #18
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The outlet must have been changed to accept the RV plug. A welding outlet looks the same but the blades are different. They are made this way so you cannot plug into the wrong outlet.
You are correct one is 90 degs. However the old dryer standard is a close 2nd and can be forced in 220V with common.
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Old 03-30-2013, 11:20 PM   #19
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The outlet must have been changed to accept the RV plug. A welding outlet looks the same but the blades are different. They are made this way so you cannot plug into the wrong outlet.
Caper, I never even noticed that, and the OP didn't specify that he changed anything. This does raise other possibilities.

I also need to clarify something I misstated in a previous post and clicked in my head after I signed off. I said no electricity would be on the second side, but this may not be right. The two 110 volt input sides are going to share the ground and neutral wires from the pedestal in a traditional 50 amp service.

So if the OP shot 220 down one side, most likely he shot 110 down a neutral, which could be shared on both sides.

I am fixing to see if I can find a wiring schematic on these kind of trailers, as it has me curious to see how they are wired now.
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Old 03-30-2013, 11:32 PM   #20
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A Progressive Industries EMS surge protector would have prevented these disasters.
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