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Old 05-23-2012, 07:24 PM   #1
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30 amp to 50 amp adaptor

I read on a Forum that using a 30 amp adaptor to 50 amp at the campsite is better due to less campers using the 50 amp post.

I bought one today and wonder if this is ok to do and safe? Just need some warm and fuzzy responses......or not.

Kathie
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Old 05-23-2012, 07:34 PM   #2
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Just keep in mind that half of 50 = 25. So you will be operating your camper on 25 amps and not 30.
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Old 05-23-2012, 07:35 PM   #3
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Quote:
Originally Posted by clutch View Post
Just keep in mind that half of 50 = 25. So you will be operating your camper on 25 amps and not 30.
WOW, I didn't realize that!!! Good to know.
Bad idea do you think?
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Old 05-23-2012, 08:29 PM   #4
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Not exactly!
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Old 05-23-2012, 08:34 PM   #5
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http://www.myrv.us/electric/

50a service is 2- 50a feeds, each at 120v. If you use a 50-30 adapter you will be using only one leg and will still have 30a to the rig.
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Old 05-23-2012, 08:59 PM   #6
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I was under the imperssion that the 50amp doubble breaker was two 25 amp breakers hooked together with each side being 25 amps for a total of 50amps. I don't know much about electricity that is what I had read at some point.
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Old 05-23-2012, 09:15 PM   #7
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A lot of people think that, but in actuality, it is 2 feeds of 50A each giving 100A total. So when you break one leg off, you get a 50A leg into a 30A trailer (which is fine unless you have a problem with your electric cord).
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Old 05-23-2012, 09:19 PM   #8
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I like to think of it this way. Electricity is water pressure and flow. 50A is not one big garden hose compared to a small (30A) garden hose...its two small garden hoses feeding the pool vs one small.

So the other comments are correct in that you gain nothing by using the 50A service on a 30A cord/plug/RV.

I am sure I will get beat up by the electrical wizards on my next comment but here it goes.

Electricity isn't "pushed" through the wire, the item on the end using the power pulls it through, and only pulls what it needs.

So if you have 15A vs 30A service, but the item on the end (trailer, blender, whatever) only needs 2amps, its only going to pull 2amps and has no idea if its plugged into 15 or 30amp since its getting all of the 2 amps it needs.

Where things get real interesting is when the "item" is asking/pulling for 25A and you are plugged into 15A. The water well is sucking all the water through the water hose it can get, and its still not enough, causing restriction, etc....this all equates to heat and additional loads on the system because the hose is too small, and the pool of water (amps) isn't enough feeding the hose either.

This is when you feel your cord/adapters/etc getting warm to the touch.

Just my goofy way of thinking about electricity.

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Old 05-23-2012, 09:32 PM   #9
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Quote:
Originally Posted by clutch View Post
I was under the impression that the 50amp double breaker was two 25 amp breakers hooked together with each side being 25 amps for a total of 50amps. I don't know much about electricity that is what I had read at some point.
Clutch is RIGHT!!! 25 amps each leg = 50 amps...
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Old 05-23-2012, 10:03 PM   #10
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If your rig is 30amp just plug in and forget trying to 'trick' the system.

IMO of course.
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