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Old 04-02-2016, 09:55 AM   #15
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Originally Posted by MRUSA14 View Post
I used this box on the outside of my garage. It works great.

Yes Lowes and Home Depot both have them that is what I used. Note they only have knockouts on the bottom and the side so plan for that. When not in use I keep a pc of foam wedged in there to keep the wasps out. Your electrician friend should certainly be able to bring a drill home to help you out.


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Old 04-02-2016, 10:25 AM   #16
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If only using while loading or short term then why 50 amps?

Sure build 50 amp outlet but inside so you can use it for welder or compressor or other handy things.

But a number 10 size wire can carry 30 amps and making a 10-4 cord would handle 2 ac units if only one on each phase so you could have a smaller cord for temp use that should fit under the door.

If you route it carefully at the corner it will fit better too.
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Old 04-02-2016, 10:58 AM   #17
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Sure build 50 amp outlet but inside so you can use it for welder or compressor or other handy things.
It's my understanding that they are wired differently for RV use, 120V 50 amp compared to 240V 50 amp? I know enough about it to get me into big trouble.
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Old 04-02-2016, 01:44 PM   #18
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If you decide to drill through the wall, I would add a couple of standard outlets for other use and make the whole setup multi use.

I think "TQ60" brings up a good point.....why go through all of this if it's just for loading and unloading.

My coach is parked in my side yard and connected to 20 amp (last 20 years). When we get ready to leave on a trip, I pull it out to the street, connect my toad and run a 50' extension cord from my garage out to the RV to keep the refer powered overnight.
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Old 04-02-2016, 02:01 PM   #19
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As others have said, you only need an extension cord connected to a 15 or 20 amp outlet to park the coach for loading and unloading. That will power the refrigerator and charge the batteries fine. The cord should fit under the garage door with no issue. Ours stays parked under a rv port at home and I did run 50 amp service to it because we sometimes use it as overflow accommodations when all of the kids are home.
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Old 04-02-2016, 02:39 PM   #20
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I used this box on the outside of my garage. It works great.
I never travel anywhere w/o one of those, a 50A breaker, and a 5' pigtail. Used it at a venue last weekend.
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Old 04-02-2016, 02:55 PM   #21
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True, a 12 ga extension cord will run the refer and keep the batteries up. Since the O.P. asked about 50A, I suspect he wants to run ACs as well.
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Old 04-02-2016, 03:56 PM   #22
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It's my understanding that they are wired differently for RV use, 120V 50 amp compared to 240V 50 amp? I know enough about it to get me into big trouble.
You understand it wrong. 50 amp service is a standard 240 volt setup.

30 amp service is 120 volts only.
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Old 04-02-2016, 04:02 PM   #23
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I've seen so many posts here that they are not comparable and people burning up things, as I say I know enough to get me in trouble.
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Old 04-02-2016, 04:47 PM   #24
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I've seen so many posts here that they are not comparable and people burning up things, as I say I know enough to get me in trouble.
Google it. The 50 amp are the same.

You could look at your plug, it should be marked 50 amp 120/240 volt.

250 Volt, 50 Amp AC Wiring

[http://www]50 amp RV service can deliver approximately 12,500 watts (125 volts X 50 amps X 2) to the RV.* Some people believe that the 50 amp RV receptacle is a "special" part.* This is absolutely not true.* In fact, it is a commonly available 50 amp, 250 volt receptacle.* Unlike the 125 volt, 30 amp Travel Trailer receptacle, this one is used in many different 250 volt applications.* It carries part number 14-50R.* The matching plug is a number 14-50P.

There is a lot of misunderstanding about how*MOST*50 Amp RV's are wired.* Some of the larger bus type diesel pushers are all electric and in fact, do have 250 volt appliances in them.* In that case, both sides of the 50 amp circuit are used to power those devices (just like your home) and those coaches MUST have 50 amp, 250V service in order to run things like the 250V stove, AC and the electric water heater.* In the case of the rest of the 50 amp RV's, 250 volts is still supplied to the coach just like your home electrical service but typically one side of the line is used for all the 125 volt appliances except the rear AC and the other side is used for the rear AC only.* The service coming into the RV is still 50 amp, 250 volts.* Please note that all of the 50 amp RV's (at least in the US) use the SAME receptacle wired in the SAME way.* If they didn't, they couldn't all plug into the same outlets at the RV park.
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Old 04-02-2016, 07:10 PM   #25
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Thanks for all the replies. The box MRUSA14 and TMW188 referred to is what I am going to go with.

As I am new to this I got to thinking about extensions. What does everyone use when they need an extension to keep the connection dry?
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Old 04-03-2016, 09:15 AM   #26
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Thanks for all the replies. The box MRUSA14 and TMW188 referred to is what I am going to go with.

As I am new to this I got to thinking about extensions. What does everyone use when they need an extension to keep the connection dry?
I used 6-4 SO cable to make a 50' extension. SO cable is very flexible and durable. It has weathered a lot of rain w/o any problems. It's being used right now while the RV is parked at a friends house in AZ. Just raise the plugs up off the ground with a wood block or something to keep them out of any standing water.
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Old 04-03-2016, 09:52 AM   #27
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I too made my new chord from SO flexible indeed.
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Old 04-03-2016, 12:37 PM   #28
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Thank you Roger I appreciate that.
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