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Honda, Yamaha, Kawasaki, Isuszu Generators

Honda EU7000is Parallel Kit


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  #11  
Old 08-11-2017, 07:42:05 PM
AlexV AlexV is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by MrRedHat View Post
For A you could look at a generator interlock kit. If you install that on your panel you can select which circuits you want on/off for the whole house.

For B, I assume you're talking about your AC? Not sure if this applies to you, but there are hard start capacitor kits you can get for your AC. They can help with the start amps quite a lot. -- Your AC may already have one, so you'd have to check it out.
Agreed. With the combined power of two EU7000's I would go with an interlock or a 3 way throw switch and run far more circuits.
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  #12  
Old 12-09-2017, 01:14:13 AM
billinjax billinjax is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by robertathonda View Post
Well, it has been a LONG time coming, but production of the EU7000is parallel kit has started! A formal announcement, including part number, pricing, etc. should be out shortly.

Not sure what was changed...I know there were some issues with the breakers tripping a less-than-expected loads, and the engineers were focusing on thermal/ambient temps factors.

- - -
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Caveat: I work for Honda, but the preceding is my opinion alone.
I haven't been following this lately... has the parallel kit been released yet or any other update on timing?

Thanks
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  #13  
Old 12-09-2017, 05:42:33 PM
len k len k is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by billinjax View Post
I've got a 3.5 ton HVAC compressor but the LRA is 117. I'm not sure two EU7000s in parallel will help me. Does anyone know how to calculate the wattage draw? Because 117A * 208V is more watts than even the largest standby units could handle. I must be doing something wrong.
No you have it right 117A * 208 = ~ 24kw. But difference is it only exists for a fraction of a second (surge rating), so gen doesn't have to have a continuous rating of 24kw . Energy stored in large spinning flywheel is tapped to supply extra energy, and windings won't overhead in the ~ 1 second it takes to start. Also typically well designed gensets have engines with 2hp/kw. But inverter gens likely have some electronic component limitations.

Also depends on how well the gen is designed.
An old 7.5kw Onan JB even on nat gas easily starts 3ton A/C (88 amp LRA)
Problem is most modern gens are light weight and have smaller engines than in past, so surge rating is lower than in past.

Last edited by len k; 12-09-2017 at 06:09:46 PM.
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  #14  
Old 12-09-2017, 06:52:57 PM
AlexV AlexV is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by billinjax View Post
That's great news. Does anyone know what kind of realistic load we can apply to this configuration?

A - Even though we have presumably twice the output, the transfer switches are still the same size. Most max out at around 10 single pole circuits. I imagine you'd have to use more 2 pole breakers maybe combined with a sub-panel to break out smaller circuits.

B - I am curious how the circuits get mapped to each generator. Can I split each leg of a 240V circuit across each generator?

I've got a 3.5 ton HVAC compressor but the LRA is 117. I'm not sure two EU7000s in parallel will help me. Does anyone know how to calculate the wattage draw? Because 117A * 208V is more watts than even the largest standby units could handle. I must be doing something wrong.
117 LRA? My two 3.5 ton A/C's shows 77LRA and 15.3 RLA each
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  #15  
Old 12-10-2017, 01:31:45 AM
len k len k is offline
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Default Re: Honda EU7000is Parallel Kit

A/C tonage to LRA depends on type of pump and if it has any type of soft start. I heard scroll type pump take less. Also variable speed ones ( PWM electronics) likley have soft start built in, so less LRA.
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  #16  
Old 12-11-2017, 10:54:43 AM
billinjax billinjax is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by AlexV View Post
117 LRA? My two 3.5 ton A/C's shows 77LRA and 15.3 RLA each
Correct. That's what the spec sheet shows. My RLA for the compressor is 21.79 A. Minimum circuit ampacity is 29 A. It's a 14 SEER unit that is only a few years old. Lennox 14HPX-042-230-19. 042 = 3.5 tons.

Not sure if the difference is the specific equipment type. My unit is a heat pump that provides both AC and then reverses direction to provide heat. We don't have non-electric heat down here like I expect most people would have up north. Although, I have no idea if you would also simply have the same kind of heat pump for AC.

Have you heard anything on the parallel kit? RobertatHonda said there would be an announcement soon but I don't see anything.
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  #17  
Old 12-11-2017, 11:18:01 AM
robertathonda robertathonda is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by billinjax View Post

Have you heard anything on the parallel kit? RobertatHonda said there would be an announcement soon but I don't see anything.
<sigh> Evidently, more delays during final testing. No specifics, sorry. I hate to keep telling you guys 'it's coming' and then it's not. I've worked in accessory development before, so understand delays are going to happen.

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  #18  
Old 12-11-2017, 11:24:32 AM
billinjax billinjax is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by robertathonda View Post
<sigh> Evidently, more delays during final testing. No specifics, sorry. I hate to keep telling you guys 'it's coming' and then it's not. I've worked in accessory development before, so understand delays are going to happen.

- - -
I work for Honda, but the preceding is my opinion alone.
Robert@Honda
Understood and I very much appreciate the update. I am having some electrical work done and plan on re-wiring to support a 50A receptacle. I'll roll the dice and assume that part won't change in the new kit. Hopefully it will be out by spring.
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  #19  
Old 12-11-2017, 12:14:37 PM
AlexV AlexV is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by billinjax View Post
Understood and I very much appreciate the update. I am having some electrical work done and plan on re-wiring to support a 50A receptacle. I'll roll the dice and assume that part won't change in the new kit. Hopefully it will be out by spring.
Bill I would definitely upgrade to a 50 amp inlet box. Even if the Honda Parallel kit fails to happen you can always go with a larger generator option. A Honda EB10000 or a Kubota GL110000 diesel are two good examples.
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  #20  
Old 12-11-2017, 12:29:27 PM
billinjax billinjax is offline
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Default Re: Honda EU7000is Parallel Kit

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Originally Posted by AlexV View Post
Bill I would definitely upgrade to a 50 amp inlet box. Even if the Honda Parallel kit fails to happen you can always go with a larger generator option. A Honda EB10000 or a Kubota GL110000 diesel are two good examples.
Good point. I was looking at the Winco w/Honda engine that is LP/NG/gas although it has a NEMA 14-60 receptacle for a 45 A output. I think you're expected to make your own cord for that unit.
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