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Old 05-17-2014, 02:43 PM   #1
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Honda EU2000i Hot/Neutral Reversed

I just bought a new generator and hooked it up for the first time today. I connected my 2014 Flying Cloud and plugged my circuit tester. I got an error reading "hot and neutral reversed." I jumped on the Internet and see that this is a common issue due to the way the generator is grounded, but couldn't find anything saying whether it is something to be concerned about. I don't want to fry my new Airstream (or myself). Anyone been down this road before?
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Old 05-17-2014, 02:46 PM   #2
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Did you plug the circuit tester directly into the generator?
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Old 05-17-2014, 03:39 PM   #3
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What did you plug into what? Did you plug the trailer umbilical cord into the 30 amp plug on the generator or use a 15/30 adapter on the end of the umbilical and plug into a 20 amp receptacle?

What I would do now is plug your tester directly into one of the 20 amp receptacles. If that test bad I would return the generator. If it test good try the same in the 30 amp receptacle with a 30/15 adapter. Again if that tests bad return the generator.

If both test good your trailer has a problem
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Old 05-17-2014, 04:04 PM   #4
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Inverters will yield this error, matters not if you use an inverter powered from 12v or one by a generator.
With a genset you'll likely get a ground fault since there really is no ground.
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Old 05-17-2014, 04:43 PM   #5
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Quote:
Originally Posted by AtomicNo13 View Post
Inverters will yield this error, matters not if you use an inverter powered from 12v or one by a generator.
With a genset you'll likely get a ground fault since there really is no ground.
Not sure I can accept this answer.
First off she made no mention of an inverter. Secondly why would you power an inverter with 110 volt source, ie: a generator? Yes there is a 12 volt option on most generators but if I understand the original question she was testing the 110 system.

If an inverter switched hot and natural you would stand a good chance of killing people with any device that only had 2 wires and was not insulated. I have grabbed 1 or 2 items that had hot and natural reversed.
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Old 05-17-2014, 04:55 PM   #6
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Thank you all for your replies. I plugged the trailer umbilical into the generator using an adapter. I tested the trailer and the generator directly with my circuit tester. Both produced the same error.
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Old 05-17-2014, 04:56 PM   #7
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How do the Honda generators make power? It is in inverter isn't it?
Plug one of those little testers into a gender output of that of a 12v powered inverter and you'll get hot neutral reverse. On in an RV park and have cheched 4 other coaches other than mine. Their inverters and generators all give the error.... yes I am using different little testers.
Who said anything about powering with 110v?
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Old 05-17-2014, 05:00 PM   #8
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And yes, I was using only the AC on the generator.
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Old 05-17-2014, 05:11 PM   #9
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Quote:
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Inverters will yield this error, matters not if you use an inverter powered from 12v or one by a generator.
With a genset you'll likely get a ground fault since there really is no ground.

Thanks, AtomicNo13. There was something in the user manual about the lack of grounding causing a difference in test readings, but astoundingly, it didn't specify how or give any further clarification.
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Old 05-17-2014, 05:20 PM   #10
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Who said anything about powering with 110v?
I believe she had her trailer PLUGGED into a generator. If that is the case the generator should be supplying 110 volts ac to the trailer. She has now clarified my questions above and is seeing reversed 110 voltage polarity at the generator.

I am out of gas but after dinner will get some and test one of my Hondas.
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Old 05-17-2014, 05:29 PM   #11
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I was dumbfounded when I first experienced this error.
I support your understanding of the lethality of a reverse hot/ neutral in these conductive bodies.
Best
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Old 05-17-2014, 05:44 PM   #12
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I just checked my gens. I got the error on the Honda inverters and the Yamaha inverter, not the Honda 5000 which is a straight generator.
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Old 05-17-2014, 06:07 PM   #13
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You will not have the fault on a diode rectified genset, only a sine wave generator.
Safety need not be a concern as this is RF power not true alternating current.
I can't believe nobody noticed this before now!
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Old 05-17-2014, 06:34 PM   #14
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It has been brought up before in other threads. Jim
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