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Old 06-12-2018, 10:18 PM   #1
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Generator Usage with hardwired EMS

I'm wanting to use my Yamaha 2000 generator to recharge the battery while dry camping. I have a hardwired 50 amp EMS and when I plugged the trailer into the generator, the EMS was tripping sporadically and flashing an error code. I hadn't heard the EMS do that before so I unplugged the power cord from the generator in fear of causing a problem with the EMS . I didn't see what the error code was. I'd heard about 'ground-neutral' bonding somewhere, but I'm wanting to know if charging the battery directly instead of using the shore power cord is effective for battery charging.

Anyone else have this issue?
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Old 06-12-2018, 11:42 PM   #2
dee
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You need a neutral bonded plug. I made my own, bought from Home Depot and shorted the ground and neutral inside the plug. Then you plug that into your generator normal 20 amp plug. You can google or search here for more detail.
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Old 06-12-2018, 11:44 PM   #3
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See here. https://www.jaycoowners.com/forums/f...lug-28086.html
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Old 06-13-2018, 05:55 PM   #4
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Thanks dee...i appreciate the info and link. As a newbie investor/generator user, I think I plugged the trailer power into the generator BEFORE the red AC pilot light was on. I tried it again after appropriate warm-up, and I'm able to plug the trailer into the generator without issue. I was prepared to use the Neutral-Ground adapter, but the Yamaha EF2000iS generator provides power to my EMS/trailer normally. If that makes sense.

Thanks again for the link!
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Old 06-13-2018, 09:22 PM   #5
dee
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Now you have me intrigued. The progressive ems checks for a neutral /ground bond. I am using a champion dual fuel inverter generator, so not sure why your Yamaha is working ok. May want to keep that plug in case.
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Old 06-14-2018, 05:17 PM   #6
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yes,I'll keep the plug. But my circuit tester indicates an all clear, correct polarity. So I'm good with that!!
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