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Open Roads Forum  >  Tech Issues

 > 50 AMP to 30 AMP adapter

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natew_usa

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Posted: 04/09/12 12:26pm Link  |  Print  |  Notify Moderator

Just curious, if I am camping at a site that only has 50 AMP sites, does that mean they only offer 50 Amp, or does it mean they have up to 50 Amp? And to follow up with that, if I buy a 50 AMP to 30 AMP adapter is that ok to use? It isn't going to over charge my system is it? The only reason I ask is because the cable does not look like it is reducing 50amp to 30amp, or maybe it doesn't have to?

Road Runners

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Posted: 04/09/12 12:33pm Link  |  Print  |  Notify Moderator

50 amp cables have four wires (2 hot, 1 neutral and 1 ground). The 50 to 30 amp adapter reduces the 4 wire cable to a 3 wires (1 hot, 1 neutral and 1 ground). In effect the 50 to 30 amp adapter just takes juice from 1 of the two fifty amp hot wires. This is the same as you get when you plug a 30 amp cable into 30 amp recepticle.


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RoyB

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Posted: 04/09/12 12:39pm Link  |  Print  |  Notify Moderator

It is safe to use a RV50A-30A adapter to your 30A trailer. Sometimes when we are camping and using the 30A shore power plug and it starts loading down some because of the multitude of folks connected to it we will sometimes switch over to the 50A connector if it is available to find it working just fine for voltage regulation.

Great adapter to carry around with you. The same is true for the RV30A-15A adapter. Another very useful adapter to have aboard. You can run your trailer on 15A/20A service just fine as well - just cant run several things at the same time or it may trip the breaker. It will work great in a pinch...


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Jackthewonderdog

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Posted: 04/09/12 12:53pm Link  |  Print  |  Notify Moderator

A 50 amp lets you draw more juice before it slips the pole breaker then a 30 amp. It has nothing to do with overcharging anything. Your house likely has a 200amp service, yet your outlets are mostly limited to 20amp before tripping the breaker. No different for your RV

chuggs

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Posted: 04/09/12 12:54pm Link  |  Print  |  Notify Moderator

Most of the campgrounds that I've been to have had pedestals that have a 50amp-30amp-20ampGFCI outlet.

I've been to two private campgrounds that ONLY had a 30amp receptacle. Haven't seen a sole 50amp receptacle YET...but I'm sure they're out there.

ANYWAY...it's a great idea to have a 50amp male to 30amp female adapter for your 30 amp RV. There are some campsites that the 30amp outlet is so badly worn that you will experience nuisance trips of the pole circuit breaker. Usually caused by dross formed on the receptacles contacts from people plugging in with the outlet still HOT. An arc jumps...and basically melts a spot on the contacts. We usually use the 50 amp adapter if there is a 50 amp outlet.

The 20amp male to 30 amp female is another good one to carry...

The twist lock male to 30 amp female generator adapter is another handy one to have...

We carry all three...and have picked up a few spares...just in case a neighbor pulls in late at night...and needs an adapter to borrow.

fandango49

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Posted: 04/09/12 12:55pm Link  |  Print  |  Notify Moderator

Agree with sbove, good to carry an adaptor, but all places I've been that had 50 amp on the pedistal also had a 30 and 20 amp plug too.

natew_usa

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Posted: 04/10/12 05:22am Link  |  Print  |  Notify Moderator

Thanks for the feedback! Great to have this forum to get some great knowledge!

Ron3rd

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Posted: 04/10/12 06:58am Link  |  Print  |  Notify Moderator

skipnchar wrote:

Could mean either thing. 50 amp (plus other offerings) or 50 amp only. Very few places that have 50 amp ONLY do not also have adapters for loan (with a deposit). It may be more convenient to just carry your own of you camp at those type of place often.


I bought one those 30 to 50a dogbone adapters at Walmart about 6 years ago. It's still in the trailer as I've never had to use it.


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answerswillvary

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Posted: 04/09/12 02:07pm Link  |  Print  |  Notify Moderator

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skipnchar

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Posted: 04/09/12 12:55pm Link  |  Print  |  Notify Moderator

Could mean either thing. 50 amp (plus other offerings) or 50 amp only. Very few places that have 50 amp ONLY do not also have adapters for loan (with a deposit). It may be more convenient to just carry your own of you camp at those type of place often.


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