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Old 11-04-2015, 08:59 PM   #1
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Using a 30amp cord on a 50amp connection

I am trying to find a pigtail that will allow me to connect a 30amp cord to my 2015 Serenity that has a 50amp connection. I purchased a Furrion 50amp (F) to 30amp (M) adapter. However, I need another adapter that will allow me to connect the 30amp (M) to the female end of the 30amp cord. I have found various 3 plug connectors online that appear that will work but they state that they are male plugs for generators. Is the 30amp female plug on a generator the same configuration as 30amp female connection on a single A.C. trailer? I have attached attached pictures of adapter and female end of 30amp cord. Click image for larger version

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Old 11-04-2015, 09:14 PM   #2
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Would this be it? RV Power Cord Adapter 30 Amp Male to 50 Amp Twist Lock Female camper Detachable | eBay
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Old 11-04-2015, 09:58 PM   #3
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Thanks Shacksman but that is similar to the one I have now. I need an adapter for the male end that will attach to female end of my 30 amp cord. As a last resort I can purchase a 30 amp extension cord for this adapter. Want to avoid doing so if possible.


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Old 11-04-2015, 10:10 PM   #4
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Originally Posted by Pat Cassity View Post
I am trying to find a pigtail that will allow me to connect a 30amp cord to my 2015 Serenity that has a 50amp connection.
I think I see the problem. Apparently you purchased a twist-lock adapter. You really needed an adapter for the pedestal end of the cord instead. A 30-to-50 adapter for the pedestal end looks like this…

Your 50-amp cord plus into the adapter, and the adapter plugs into the pedestal.

If you need more than one adapter at the same time, you've got the wrong setup.
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Old 11-04-2015, 10:51 PM   #5
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Why not buy a 30 amp to 50 amp cord ,they are easier to handle and are not that much money on amazon...
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Old 11-04-2015, 11:14 PM   #6
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How do you plan to ensure that the 30 amp cord will not be overloaded?
When you plug a 50-amp system into a 30-amp socket through an adapter, you've only got one hot wire, one neutral, and one ground, instead of two hot, one neutral, and one ground. The other "hot" wire in your 50-amp cord will not be powered at all.

Your circuit breakers will ensure that your one powered circuit will not be overloaded. A bit of experimenting will show what you can power and what you can't while you're plugged into 30 amps. Probably almost everything, except you'll only have one air conditioner that works, and you won't be able to run that A/C and the microwave at the same time.
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Old 11-05-2015, 06:26 AM   #7
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My intent is to be able to use a much lighter 30amp cord in those situations where 50amp service is not available. To do so, I purchased the twist lock adapter to connect to the 50amp connection on my TT. The issue is with the male end of this connector. It needs to be able to plug into a female 30amp twist lock connector of the 30amp power cord. Pro, the adapter that you posted will not plug into the TT and the male end is the same as the adapter that I have now. Thanks.
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Old 11-05-2015, 06:53 AM   #8
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Pro, the adapter that you posted will not plug into the TT and the male end is the same as the adapter that I have now. Thanks.
I didn't realize that you wanted to carry a 50-amp cord AND a 30-amp cord. The 30-amp cord is lighter and more flexible than a 50-amp cord, that is true. But a "dogbone" adapter like I suggested takes up less storage space than a 30-amp cord, so you have less to store in your trailer. Still, that's your choice. But I've never even SEEN a twist-lock-to-twist-lock adapter to let you plug a 30-amp cord into a 50-amp trailer. Does anybody even make one?
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Old 11-05-2015, 07:23 AM   #9
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Pro, I am a bit confused about how you are suggesting to use the adapter. The adapter that I purchased ( see pic) is a 50 amp twist lock that is the same as on a 50 amp cord. This plugs into the 50amp receptacle on the TT. The other end of the adapter is a 30amp male plug similar to the one that plugs into the power receptacle at a campground. I want to be able to plug this into my old 30amp cord in those situations where 50 amp service is not available. Yes, I would be carrying both a 50 amp and 30 amp cord in a storage box in the back of my truck. Using a 30amp cord in this situation would be much more convenient than dealing with the much heavier 50 Amp cord.


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Old 11-05-2015, 07:34 AM   #10
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Pro, I am a bit confused about how you are suggesting to use the adapter.
I was suggesting that you use the "dogbone" adapter with your 50-amp cord, and not even use a 30-amp cord. But since you have rejected that notion, you can simply forget everything I've said and press on with what you were doing.
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Old 11-05-2015, 07:56 AM   #11
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Gotcha, thanks again Pro. In my original post I asked if the 30amp receptacle on a generator was the same as the the female end of a 30amp RV cord. If so, I have found an adapter that appears to be what I need. See attached pic. Click image for larger version

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Old 11-05-2015, 09:27 AM   #12
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Get a 30 amp rv extension cord. The kind used for rvs without a twist lock.
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Old 11-05-2015, 10:06 AM   #13
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I use a 30a RV cord with a 30a male RV blade end and a 50a female on the other end. I use a jumper between the two hots on the female plug so I can power both sides of my distirbution panel. Has worked fine for several years.

Won't work if you have any 240v appliances. Does not give you more than the 30 amps available at the pedestal.
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Old 11-05-2015, 11:36 AM   #14
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Protagonist,

I have found that 30 to 50 adapters usually bond the two 50 amp hots together so 3600 watts is available to share across both legs. The second A/C is usually by itself on leg 2. So one can run either A/C (only one) along with the normal stuff on leg 1.

Barry
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