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Old 07-26-2015, 06:32 PM   #1
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15 to 50 amp cable

Hi all. I need to build a 50 amp female to 15 amp conversion cable so I can plug my trailer in to keep the fridge cold and the batteries charged. Any suggestions would be appreciated.
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Old 07-26-2015, 06:46 PM   #2
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This is easy:

http://www.amazon.com/Camco-55168-Po...15+amp+adapter


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Old 07-26-2015, 06:54 PM   #3
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Quote:
Originally Posted by NavyDiver198 View Post
Hi all. I need to build a 50 amp female to 15 amp conversion cable so I can plug my trailer in to keep the fridge cold and the batteries charged. Any suggestions would be appreciated.
Even Walmart has them if your store carries RV stuff. I strongly suggest that you run these things from a 20A circuit. The 14 AWG wire in a 15A circuit has too much loss and may cause problems for your rig.

The conversion cam be done in steps. You can "dog bone" from 50 to 30 and then use the 30 to 20A adapter.

Happy trails,

Rick Y
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Old 07-26-2015, 07:24 PM   #4
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I use this.
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Old 07-26-2015, 07:53 PM   #5
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I bought a 'Brand X' via eBay -- and it turned out to be a Marinco product. Not to say all will be a name brand item, but I was very happy plus it was a lot less money then AMAZON
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Old 07-27-2015, 12:04 AM   #6
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I have the one davendeb mentioned above and am very happy with it. Saves me bringing out the heavy 50 amp cord.
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Old 07-27-2015, 12:04 PM   #7
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The 50 amp cord is more trouble but has much less power loss than a small extension cord.
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Old 07-27-2015, 12:27 PM   #8
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The 50 amp cord is more trouble but has much less power loss than a small extension cord.
100% correct but where at home do you plug it in to just run the reefer as the OP said? I use an awg 12 from a 20 amp circuit for the lead to the 5er and the adapter and can run everything but the a/c with no noticeable power loss
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Old 07-28-2015, 01:31 AM   #9
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I use a 100' heavy 10 gauge extension cord from a 15 Amp exterior house outlet to run the fridge and charger when needed. I wouldn't run the AC with it, but it's certainly more than enough to charge my battery bank at more than 100 amps for hours on end (about 1500 watts). I see minimal voltage drop with the 100' extension cord run using 10 gauge.
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Old 07-28-2015, 11:36 AM   #10
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The trick is to run the largest ga cord you can and then adapt it to a 15/20amp plug right at the house outlet. A 10ga cord is good for about 30amps so would be perfect, even for a long run.

I have a dedicated 50amp RV outlet at my house but to just keep the batterys charged and run a few small things the 15/20amp adapter plugged into a standard house outlet will be fine.
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