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Topic: 120/240 volt 30-amp generator outlet question

Posted By: jestes on 05/16/05 08:49am

I have a generator that has a NEMA 120/240v 30 amp plug with 4 prongs. My RV has a 30-amp 3 prong plug. I have been unable to locate an adapter that would allow me to plug my trailer into the 30-amp outlet.

Is there something I can do to convert this outlet to a usable power source?


Jennifer


Posted By: sandygirl on 05/16/05 09:56am

Yes, buy the parts at home depot and make your own adapter.

Sam


[/purple][b]Kari & Sam Hurricane, Utah[/b] 2004 34' Damon Challenger 315

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Posted By: Momma on 05/16/05 11:24am

I went to ACE hardware and made my own.


Posted By: Mach1 on 05/16/05 11:34am

Lowes had everything I needed. I got a single outlet box with a angle bracket to secure it to the generator. A female 30 Amp RV receptacle, metal wall plate, and a foot or so of 10/3. It's really just a pigtail but I used the box method so it wouldn't dangle. My generator has a three prong locking plug for the 110 and 4 prong for the 220 so I used the 3 prong. Lowes even had the large rubber insulation boot for the plug.


Posted By: sandygirl on 05/16/05 01:10pm

You can buy the three prong twist lock adapter but you can't get a 4 prong 120/240 30 amp.

Sam


Posted By: Capt-Ron on 05/16/05 01:32pm

My generator came with the 4 prong 120/140V 30 amp plug to that fits the receptacle. They are also used for boat shore power cords and available at a marine store if you have one in your area.

Capt Ron


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Posted By: Kenneth on 05/16/05 02:27pm

NEMA 14-30R receptacle on the generator?...125/250 volt, 3-wire, 4-pole, locking? You need the mating NEMA 14-30P plug, a short length of #10/3 portable cable (extension cord wire), and a NEMA TT-30 connector for the RV receptacle. These are available as a 30 Amp Female Connector with stripped ends for about $6-$7. Of course, you wire to one hot leg, ground, and neutral on the generator. Can the generator handle that much imbalance on the legs?




Ken


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Posted By: Deen on 05/16/05 07:50pm

Kenneth wrote:

NEMA 14-30R receptacle on the generator?...125/250 volt, 3-wire, 4-pole, locking? You need the mating NEMA 14-30P plug, a short length of #10/3 portable cable (extension cord wire), and a NEMA TT-30 connector for the RV receptacle. These are available as a 30 Amp Female Connector with stripped ends for about $6-$7. Of course, you wire to one hot leg, ground, and neutral on the generator. Can the generator handle that much imbalance on the legs?
Ken
That could cause a problem all right! Too many years since electrical theory for me!!


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