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Old 05-01-2013, 06:36 AM   #1
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50 amp to 30 amp reducer cord

Since this is my first 5th wheel with a 50 amp power cord is it acceptable to use a 30 amp cord( with reducer) as an extension.. if ..I cant get my rig close enough to the power pedestal at the campground ??
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Old 05-01-2013, 06:42 AM   #2
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Yes if you treat it like (30) amp. Youroo!!
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Old 05-01-2013, 07:39 AM   #3
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I'm on a 30 AMP seasonal site and use a 50 to 30 reducer/dogbone adapter with no problems. Like youroo said, I just treat it like a 30 AMP meaning I can't run the AC, microwave, and run the HW on electric all at the same time.
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Old 05-01-2013, 08:26 AM   #4
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Adding a 30 amp cord as an EXTENSION to a 50 amp cord has issues way beyond "watch your amperage use."

1) There will also be significant voltage loss in the 30 amp extension. You should monitor your voltage in the camper when you are doing this. ANY indication your AC is having trouble starting is cause for alarm.

2) If you use a 30 amp to 50 amp converter to plug into the 50 amp socket on the pole, you could cause a fire by overloading the 30 amp rated connections and the 30 amp rated cord.

As said before; this can be done, but is not recommended. In fact, many 30 amp campers use 50 amp rated extension cords to keep voltage loss to a minimum.
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Old 05-01-2013, 09:28 AM   #5
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Quote:
Originally Posted by dretired View Post
Since this is my first 5th wheel with a 50 amp power cord is it acceptable to use a 30 amp cord( with reducer) as an extension.. if ..I cant get my rig close enough to the power pedestal at the campground ??
If you are talking about using a 30 amp extension cord on a 50 amp service pole to a 50 amp service trailer not a good idea! See Herks post above. Think of it this way, the power pole has the ability to provide 50 amps before the breaker trips. (theoretically) The trailer has the ability to accept 50 amps before the trailer 50 amp electrical panel breaker trips. Now what you have in between is a 30 amp cord, your cord is now a fuse except that it won't trip but get hot and burn!

But if you are talking about plugging into a 30 amp service pole, with a 30 amp cord and adaptor to your 50 amp trailer you should be OK, because once you exceed 30 amps of power use the breaker at the power pole should trip.
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Old 05-01-2013, 11:38 AM   #6
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If you're planning on a long extension cord, just make sure it's heavy enough gauge for 50A over that length. Monitor it for getting hot when you have heavy electrical usage.
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Old 05-01-2013, 12:16 PM   #7
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NO, NO, NO.

DO NOT use a 30 amp cable on a 50 amp system. You can use a 50 amp cable on a 30 amp system, but not the otherway.
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Old 05-01-2013, 12:53 PM   #8
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Now I am really confused.

50 from camper to 30 amp extension to 30 amp pole ok.

50 from camper to 30 extension to 50 at pole no good.

To long and voltage drop problem.
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Old 05-01-2013, 03:35 PM   #9
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Originally Posted by garbonz View Post
Now I am really confused.

50 from camper to 30 amp extension to 30 amp pole ok.

50 from camper to 30 extension to 50 at pole no good.

To long and voltage drop problem.
You are not confused. Your understanding is correct
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Old 05-01-2013, 03:49 PM   #10
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How about the reverse senerio? I have a 30 AMP unit. I purchased a 50 to 30 converter cord in the unlikely event I get to an RV park that only has a 50 AMP site available.

Anything I need to worry about?

Thanks!
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