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Old 06-13-2015, 11:35 AM   #1
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G-N bonding plug?

My hardwire progressive industry's ems throws a e2 error code(open ground) when I hook it to my Honda eu2000i's.I contacted progressive industry's about it they said I need to make a G-N bonding plug and plug it into one of the unused plugs on the gens.

I did alittle research and it apears the the Hondas and most inverter style gens use a floating ground and this is why this needs done.

Anyone else have to do this?Is it safe(don't wanna die)?Is it safe for my gens(don't want them to die)?
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Old 06-16-2015, 08:23 AM   #2
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I cannot give you a definitive answer.

Proper grounding and bonding in electrical distribution systems can be a complex subject. Neutral to ground bonding is most often only allowed at the main distribution panel using very specific methods. The neutral is not bonded to ground in sub feed panels.

Your Progressive Industries EMS does have some good monitoring features. Using the G-N bonding plug as suggested doesn't really address the no ground condition as much as it satisfies or tricks the Progressive Industries testing design. I can say that bonding the neutral to ground without a proper ground conduction method (water pipe, driven ground rod, grounding mat, etc.) can be dangerous of itself. Bonding to a marginal ground grid can cause some more problems than it addresses. One issue is that bonding the neutral as you describe can set you up for a "Hot Skin" condition.

I would hesitate to give advice as to what is necessary for proper grounding and bonding for a small stand alone generator unit. Connecting a GFI unit at the output can increase the safety of using a portable generator. GFI protection doesn't depend upon ground bonding for the safety it provides so that is what I would rely upon.

Mike Sokol has some good general information here:

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No Shock Zone | RV Travel


FWIW. vic
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Old 06-16-2015, 08:39 AM   #3
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Quote:
Originally Posted by WrenZ71 View Post
My hardwire progressive industry's ems throws a e2 error code(open ground) when I hook it to my Honda eu2000i's.I contacted progressive industry's about it they said I need to make a G-N bonding plug and plug it into one of the unused plugs on the gens.

I did alittle research and it apears the the Hondas and most inverter style gens use a floating ground and this is why this needs done.

Anyone else have to do this?Is it safe(don't wanna die)?Is it safe for my gens(don't want them to die)?
I just turn it off as I am not going to "fool" it. Yes that leaves me unprotected, but I am not using the genny all that often and usually I only have my converter on to charge the batteries. All other breakers are off.
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Old 06-16-2015, 09:23 AM   #4
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The real solution is to pound in a grounding rod to create a genuine ground.


Ooops. Need 2: One for the genny and 1 for the RV.


Nope. That won't do either. Neutral is still floating.... You'll have to bind them INSIDE the genset.


Check the Honda manual for that.
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Old 06-16-2015, 09:58 AM   #5
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When using a generator it is perfectly acceptable to tie the neutral to the ground at the generator. The separate ground is necessary when connected to shore power where you have a chance of multiple return path for a distant source. Power lines, transformers, and commercial distribution systems. With the generator you don't have the same issues.
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Old 06-16-2015, 12:02 PM   #6
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I had to build up a bonding plug to use with my INVERTER.

It is also useful plugging into a my 2KW Generator as well...

Here is reading material about bonding generators which was on here a few years back... Might be some useful info here for you to consider.

Bonding Generators
RV.Net Open Roads Forum: Tech Issues: Bonding a generator

Supporting photos





sample photos from google images

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Old 06-16-2015, 12:30 PM   #7
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Thanks for the replys everyone.I ended up making one up the next day after alittle more Internet research. Plugged it in and everything works great.

The only other question I have is should I have 2 of these(gens hooked in parallel)?One in each Honda eu2000?Also with 1 of these does it mater which of the gens it's plugged into?I hooked it up to the companion model which my trailer is plugged into.
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Old 06-16-2015, 12:36 PM   #8
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Put the bonding plug on the same generator you are connecting to the RV. Connect the ground wire between the generators on the provided ground screw terminals. You do not need a bonding plug on both generators.
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Old 06-16-2015, 09:54 PM   #9
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I just can't resist...

If this Neutral - Ground cheater plug is such a safe and great solution, and it is approved by all jurisdictions, why isn't every RV that "needs" one supplied with it from the factory? It just seems odd to me given the money people are shelling out for a new RV that such a simple inexpensive solution wouldn't be standard equipment. Are these cheater plugs commercially available?

vic
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Old 06-16-2015, 10:32 PM   #10
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Quote:
Originally Posted by VicS1950 View Post
I just can't resist...

If this Neutral - Ground cheater plug is such a safe and great solution, and it is approved by all jurisdictions, why isn't every RV that "needs" one supplied with it from the factory? It just seems odd to me given the money people are shelling out for a new RV that such a simple inexpensive solution wouldn't be standard equipment. Are these cheater plugs commercially available?

vic

Better yet, if it's such a safe solution, why don't all generators have ground and neutral bonded together as the default configuration? What are the potential downsides of G-N bonding of a generator?
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