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Old 10-26-2013, 01:56 PM   #1
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30 amp to 50 amp

Hi
We go to a lot of places that only have 30 amp. If I get one of those 50 to 30 amp cords what won't work in the trailer?
Thanks in advance for the help
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Old 10-26-2013, 02:09 PM   #2
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Anyone ever used one of these?

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Old 10-26-2013, 02:12 PM   #3
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Everything will still work. You will just need to watch how much you turn on a one time. You should be OK with the micro, TV, lights and one a/c going, if you turn on the second a/c the circuit breaker on the post will probably trip.

The adapter connects both sides of the 50 amp to the 30 with a jumper internally.
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Old 10-26-2013, 02:14 PM   #4
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Quote:
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Anyone ever used one of these?

Attachment 10465
Won't work with a ground fault 20 amp receptacle, it will trip everytime.
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Old 10-26-2013, 03:04 PM   #5
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This is a typical 50AMP Distribution layout.


You will need to have a RV 30A to 50A adapter that will look like this wiring diagram. Notice the part that accepts your 50AMP trailer shore power connector has the two hot legs shorted together so that both legs of your 50AMP Power Distribution Panel will be feed with the 30AMP source power.


Your trailer should work just fine but you will have to watch what is being turned on at the same time otherwise you will be tripping some breakers on the camp ground pedestal.

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Old 10-27-2013, 02:23 PM   #6
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If the 30 amp and 20 amp circuits are different phases such a plug will immediately trip the breaker. I would like one that keeps each leg separate. You can test the wiring of an adapter with a multimeter.
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Old 10-28-2013, 03:54 PM   #7
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30 amp to 50 amp

I personally like to have an adapter that plugs into the trailers 50amp then use a 30 amp cord. Those 50amp cords are a monster to handle.once I get to my stay if they have 50 amp I will switch then.much easier when on the road
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Old 10-29-2013, 06:49 PM   #8
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Clayton4971- A word of caution, if you're using all of your 50 amp equipment and pulling it through a 30 amp cable, it could overheat. Although, I suppose, if you're attached to the 30 amp outlet, you'll blow the breaker.
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Old 10-29-2013, 07:08 PM   #9
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30 amp to 50 amp

Quote:
Originally Posted by fthorsby View Post
Clayton4971- A word of caution, if you're using all of your 50 amp equipment and pulling it through a 30 amp cable, it could overheat. Although, I suppose, if you're attached to the 30 amp outlet, you'll blow the breaker.
That's exactly what will happen done that already. We have been traveling for the last four years . We usually leave after turkey day or Christmas . Michigan to the SW half of the places have 50 amp . We have figured out what we can run at one time if not it lets you know . If I am going to stay a few days I will drag out the big cord but just for the night to sleep the 30 is so much lighter and easier to handle. The adapter that I purchased that plugs in the trailer from 50 to 30 I have used a lot. Four weeks and we will be hitting the road again.
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Old 10-29-2013, 07:14 PM   #10
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Quote:
Originally Posted by fthorsby View Post
Clayton4971- A word of caution, if you're using all of your 50 amp equipment and pulling it through a 30 amp cable, it could overheat. Although, I suppose, if you're attached to the 30 amp outlet, you'll blow the breaker.
X2
You never ever want to use a 30 to 50 AMP adapter for your coach and then another 50 to 30 amp adapter to plug into the pedestal. It is a recipe for a fire. In that situation you would not be protected by a 50 amp breaker.
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