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Old 03-29-2012, 04:19 PM   #29
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John WA8YXM is right a RV 30 amp service is NOT wired like a welder or most dryers
The RV service has two grounds and ONE hot.
A 50 anp service has two grounds and two hots that are out of phase.
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Old 03-29-2012, 05:26 PM   #30
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Quote:
Originally Posted by lenjen
We will be running electricity to our new MH garage and I was asked if I wanted 20, 30 or 50 amp service? 30 & 50 will require 250 feet under ground run and extra expense. To me 50 would be over kill for any situation. 30 amps would allow a/c use for an extra bedroom if ever needed and 20 amps would keep the refrigerator running.

We are only doing this once so I need to get it right. Can anyone think of a real reason to need any more than the 20 amps for 99.9% of the time in a parked MH?

Do you keep your RV plugged it when it is not in use or parked between outings?
If it is just going to sit, 20 is enough. Hell I've camped for months on 20amps, even running AC. The question is, are you ever going to change what you do with it there?

My barn is 100amp, but I only put in a 20 amp run to it because, Im never gonna use 30. My $0.02
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Old 03-29-2012, 05:58 PM   #31
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If it is just going to sit, 20 is enough. Hell I've camped for months on 20amps, even running AC. The question is, are you ever going to change what you do with it there?

My barn is 100amp, but I only put in a 20 amp run to it because, Im never gonna use 30. My $0.02
That is my point, am I ever going to use the 30/50? Itís not the cost as much as tearing up the yard, tree roots and the other damage I might get running the line. Heck I will give up my bedroom in the house before I'd let someone sleep or stay in my RV. I'd worry a lot less with company in my house than in my RV. And I think I can survive on 20 amps.
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Old 03-29-2012, 06:22 PM   #32
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That is my point, am I ever going to use the 30/50? Itís not the cost as much as tearing up the yard, tree roots and the other damage I might get running the line. Heck I will give up my bedroom in the house before I'd let someone sleep or stay in my RV. I'd worry a lot less with company in my house than in my RV. And I think I can survive on 20 amps.
The damage is equal regardless of wire size. If this was a vote I would suggest a 30 amp service. Note that you will need more than 8g wire for 250ft. You should use at least 6g.
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Old 03-29-2012, 06:33 PM   #33
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Quote:
Originally Posted by lenjen

That is my point, am I ever going to use the 30/50?
Only you can answer that.

Quote:
It’s not the cost as much as tearing up the yard, tree roots and the other damage I might get running the line. Heck I will give up my bedroom in the house before I'd let someone sleep or stay in my RV. I'd worry a lot less with company in my house than in my RV. And I think I can survive on 20 amps.
Than get 20. If you're not 100% positive, get 30. As you said, it's not the cost and you have to tear the yard up anyway right?, so put 30 in.

If you never need it, you can then beat yourself up for spending an extra $100. If you do need it, you can tear your yard out again and do it over. Does that help with you decision?
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Old 03-29-2012, 06:51 PM   #34
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I wonder what else is on the 20 amp feed that you want to extend?
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Old 03-29-2012, 07:05 PM   #35
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Quote:
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We will be running electricity to our new MH garage and I was asked if I wanted 20, 30 or 50 amp service? 30 & 50 will require 250 feet under ground run and extra expense. To me 50 would be over kill for any situation. 30 amps would allow a/c use for an extra bedroom if ever needed and 20 amps would keep the refrigerator running.

We are only doing this once so I need to get it right. Can anyone think of a real reason to need any more than the 20 amps for 99.9% of the time in a parked MH?

Sandi, my advice is the 50A service due to the fact that you are running 250 ft for the service. A 30A 10 gauge service would generate too much of a voltage drop, so as others have suggested, run a larger gauge wire.

So while you're at it, and you have to dig up the yard anyhow, run the 6/3 w/g 50A 220V service and you will have no problems whatsoever.

Voltage drops could potentially harm your appliances, such as the a/c.
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Old 03-29-2012, 07:24 PM   #36
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Way back when....

we first bought the stick house I put in a 30 amp circuit. But that was back when all RV's only needed 30 amps. Now that we have 50 amp RV's I don't see a need for anything more. With 30 amps I can run buth heat pumps if needed. I also run two 1500 watt heaters, a 100 watt bulb and a fan all winter. That's all I need.
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