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Old 04-06-2018, 07:54 PM   #1
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50 amp to 30 amp?

I have a 2014 flying cloud Bambi 19 foot. Obviously it runs on 30 amp service. I have a reserved spot for the summer in a wonderful park however discovered that the site is only set up for 50 amp service. I want to make sure I donít do anything that will cause electrical problems with my airstream. I called Jackson Center, and explained the situation. The gentleman I spoke with recommended getting a dog bone type adapter that would be a 50 amp male with 30 amp female connections allowing me to plug my trailer into it. He said there shouldnít be any issue with the trailer, but if I wanted more peace of mind I could get an External surge protector. Does anyone have experience with this situation? Is it common/safe to connect a 30 amp airstream to a 50 amp service? Any recommendations on the specific dog bone adapter or external surge protector I should buy? As always, really appreciate all the help from this forum.
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Old 04-06-2018, 09:03 PM   #2
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50 amp to 30 amp?

Itís no issue at all. Simple dog bone adapter will work just fine.

A surge protector is completely optional - I traveled for many many years without one and no issues.

If you get one Iíd recommend a 30 amp EMS protector:

http://www.progressiveindustries.net

Have fun camping!
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Old 04-06-2018, 09:07 PM   #3
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Everyone should travel with one of these:
https://www.amazon.com/Proline-Femal...ter+plug&psc=1
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Old 04-06-2018, 09:56 PM   #4
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I thought the 50 to 30 dogbone was a standard accessory and, in fact, my dealer gave us one when we picked up the rig. Surprised you don't have one. No issues whatsoever. In fact, at many full hookup parks the 30 amp receptacles are worn and loose - a disaster waiting to happen. Frequently, when 50 amp is available I'll pick that over a loose 30 amp. The 4 prongs of the 50 are much more secure than the three of the 30.
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Old 04-06-2018, 10:26 PM   #5
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Both the 30 amp and the 50 amp service are going to be the same voltage, approx 120 volts. The difference is the amount of current you can draw before the breaker in the power terminal trips. If the only thing you do is turn on one light, it will draw less than 1 amp, whether you plug into the 30 amp plug or the 50 amp plug. If you turn on enough things at the same time, you might draw 40 amps (unlikely with your trailer) at which point the 30 amp breaker would trip, but the 50 amp breaker would keep on truckiní
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Old 04-06-2018, 11:22 PM   #6
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Yes, the doggone is a good thing to have.
Remember, the power post does not "push" current to the RV, the RV "draws" what it needs. All the doggone does is use one leg of the 50 amp side, and you'll draw from that.
A word of caution, don't exceed the 30 amps, because the post can supply more and perhaps overload your cord. Your circuit breakers should trip if you turn on everything at once.
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Old 04-07-2018, 02:53 AM   #7
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Thank you all very much. One follow up Ė several have mentioned being careful not to draw more than 30 A or the breaker will trip. How does one know how many amps youíre drawing at any given time? Is there a gauge or something to connect to have a constant read on this? Maybe Iím reading way too much into this as I tend to over analyze - Overall it sounds like getting the dog bone will suffice, and the External surge protector if I want the extra protection.
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Old 04-07-2018, 05:50 AM   #8
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Quote:
Originally Posted by Arnoldjeff View Post
Thank you all very much. One follow up Ė several have mentioned being careful not to draw more than 30 A or the breaker will trip. How does one know how many amps youíre drawing at any given time? Is there a gauge or something to connect to have a constant read on this? Maybe Iím reading way too much into this as I tend to over analyze
You shouldn't have a problem. You trailer's 120vAC circuit breaker panel should have a main breaker within that will trip if you exceed 30amps total draw. Just remember that if you do trip a main breaker and all the 120vAC appliances shut off at once, check your trailer's breaker panel first, then the service pedestal breaker.
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Old 04-07-2018, 06:24 AM   #9
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If you get a surge protector, you can get one that displays how many amps you are drawing. Iíve always found this interesting to know, so I can see the extra draw when the elec hot water heater kicks in, the microwave, etc.
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Old 04-07-2018, 09:13 AM   #10
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Dog Bone 50amp to 30amp works great! We've used one for years and they can be found at almost every RV supply store.
We had a surge protector permanently installed in our rig years ago. No problems since.
Happy trails.
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Old 04-07-2018, 09:17 AM   #11
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I use this 30 amp model for our 30 amp power rated 23D and their 50 amp model for our Classic with 50 amp service.

https://www.amazon.com/gp/product/B0...oop_bw_c_x_3_w
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Old 04-07-2018, 09:28 AM   #12
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Both the 30 amp and the 50 amp service are going to be the same voltage, approx 120 volts. The difference is the amount of current you can draw before the breaker in the power terminal trips. If the only thing you do is turn on one light, it will draw less than 1 amp, whether you plug into the 30 amp plug or the 50 amp plug. If you turn on enough things at the same time, you might draw 40 amps (unlikely with your trailer) at which point the 30 amp breaker would trip, but the 50 amp breaker would keep on truckiní
Yes...
But your trailer is fitted with 15 amp breakers so this won't happen
JCW
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Old 04-07-2018, 10:05 AM   #13
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It's a good idea to carry a variety of pigtails for common electrical connections including an extra long extension cord, preferable #12, should you need it. Not all plugs are standard 110V and you may have 15,20 and 30 amp receptacles at 110V. Sometimes I've stayed in a motel and run the extension cord out the window to my RV to keep it charged in cold climates.
It's the Boy Scout motto "Be Prepared"
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Old 04-07-2018, 10:18 AM   #14
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You have to understand current is not pushed into your trailer - it is drawn .
You want to know how much current is being drawn - read the spec.s on what ever you plug in .
The metal on plugs & outlet are limited by how they are oriented - typical wall outlet is 15 amp , you can not plugin a higher current device into a 15 amp outlet - because the male ends change as the current changes .
https://diy.stackexchange.com/questi...ome-in-the-usa
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