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Old 08-16-2014, 10:34 PM   #1
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Honda EU 2000s in parallel

We have a 2010 27FB FC with the factory Dometic AC. Just bought two EU2000i generators to run everything when boondocking. One is the standard and the other is a Companion model. Got the parallel kit too. Hooked everything up today, and the pair in parallel won't seem to kick the AC on? Anyone have any secrets that I may be overlooking? AC works on 30A shore power, and voltmeter says 120-126 on each generator through all outlets. 110 appliances work fine, but AC just won't fire up? Any help appreciated!
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Old 08-16-2014, 11:01 PM   #2
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Make sure all appliances are off, and that hot water heater is running on gas mode. I have the same generator setup and will run ac fine but not much else as far as other appliances. That's all I can offer, Mike
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Old 08-17-2014, 05:53 AM   #3
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I have the same generator setup. I run a 15,000 btu Dometic with the generators. Try turning the Econo Mode switches off on both generators. The generators will already be at a higher rpm and ready to load up when the AC starts.

Are the generators going to idle in overload when the AC tries to start? I assume you are using the 30amp outlet on the companion generator.
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Old 08-17-2014, 09:01 AM   #4
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We definitely tried firing it up solo - with nothing else running. Interestingly, it never really seemed to "call on" the generators. We did have it connected via the 30 amp cord and think that may be part of the problem. I have a 50' cord (brand new but maybe too long??). Will try 25' today. Just can't understand why it won't at least pull on the generators - even throwing them into overload would be the right sign, right?
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Old 08-17-2014, 06:11 PM   #5
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We have the same set up and have never had a problem running the AC while paralleled ... Eco should be off...and just to be sure, check that you have the parallel cables hooked up up correctly. That long extenson cord might be comingo into play as well. Let us know how it develops...
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Old 08-17-2014, 06:22 PM   #6
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I have the same generators AC must be off when starting generators . mine will run on eco mode after it has been running for a while . my ac is a 13.5 unit and my power cord is a long one .
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Old 08-17-2014, 06:25 PM   #7
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Howdy Richrexw, We have the same Honda EU2000's and they work great even with everything and the AC running. As stated, make sure you are using the 30amp receptacle on the companion and try taking both Gen's off of economy mode. I have used 2, 25' cords together with no problem. Good luck.

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Old 08-17-2014, 07:18 PM   #8
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Tried everything today, and no go? ? ? It's a real mystery. All good on shore power, every outlet works, AC blows snow. Nothing on either generator solo or tied together in parallel. Can't even get the microwave clock to come on. Does anyone know about the path from the 30 amp female receptacles on the exterior of the trailer to the electrical panel? I wonder where I should be connecting my multi-meter to see if there is a break in that circuit. Doesn't seem like that'd be it though, since shore power follows the same path. May be a trip to AS . . .
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Old 08-17-2014, 07:48 PM   #9
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Rich where are you connecting the power cord from the Honda's? Are you connecting to the same connection where the shore power works fine? Any chance you have a surge protector installed? If you have a surge protector likely it won't work with the standard Honda setup since it doesn't see a valid ground. On my trailer the Surge Guard is installed on the standard shore power line. Generator will not supply power. Plugging into the Generator input at the front of the trailer everything works fine.
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Old 08-17-2014, 07:57 PM   #10
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Quote:
Originally Posted by ghaynes755 View Post
Rich where are you connecting the power cord from the Honda's? Are you connecting to the same connection where the shore power works fine? Any chance you have a surge protector installed? If you have a surge protector likely it won't work with the standard Honda setup since it doesn't see a valid ground. On my trailer the Surge Guard is installed on the standard shore power line. Generator will not supply power. Plugging into the Generator input at the front of the trailer everything works fine.

That's a good thought. I hadn't thought of surge protectors as a potential cause. I don't think there's a surge protector but it is a new trailer for us, so maybe? I tried both connections, so maybe there are protectors on both? If they're there, they must be factory installed. Definitely something else to check.


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Old 08-17-2014, 08:45 PM   #11
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I don't own a Honda generator. But I have looked at them. As I recall the 30 amp receptacle is a twist lock.
Do you have a twist lock on the shore power cable or are you using an adaptor cord?
If things work on shore power and you are using the standard 120 volt 30 amp receptacle and plug. I think what you are using to adapt to the twist lock may be your problem.
Show us your plug set up.
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Old 08-17-2014, 09:29 PM   #12
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Try using just one of the 120V outlets on the generator. Maybe the 30amp is kaput. If you get no power on 120, like turning on the TV, then I would bet it is the ground issue. There is a way to modify a 30amp connector to trick the trailer into thinking there is a ground. I've seen those posts either here or on the net.
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Old 08-17-2014, 09:49 PM   #13
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I have this setup and my AC works fine when plugged into the same receptacle as the shore power is connected to. I do not get power when the generators are plugged into the receptacle on the front of my trailer which is labeled "Generator".

Also, try setting your fan to "on" a little before turning the AC on. This reduces the heavy load you get when both the AC compressor and fan come on at the same time.
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Old 08-17-2014, 09:50 PM   #14
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Quote:
Originally Posted by TG Twinkie View Post
I don't own a Honda generator. But I have looked at them. As I recall the 30 amp receptacle is a twist lock.
Do you have a twist lock on the shore power cable or are you using an adaptor cord?
If things work on shore power and you are using the standard 120 volt 30 amp receptacle and plug. I think what you are using to adapt to the twist lock may be your problem.
Show us your plug set up.

Thanks TG, I took for granted that the plugs were all good. Her's what I've got. I "think" they are all twist lock, but could be wrong. They all at least seem to lock. When they engage, you can turn them all for about a clockwise hour, and they will not pull out.

Here's the male ends - the white one is a new "Eel Power" from West Marine. The black is a standard 30A NEMA.

Click image for larger version

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Here are the females

Click image for larger version

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I have them connected together - black to outlet and white to trailer for shore power, and everything works (either trailer receptacle). What do you think?


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