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Old 11-29-2012, 05:45 AM   #16
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Fried my generator


Are you sure that the interlock was working properly?

Increasingly these days, power company linemen will short to ground the lines they are working on using a jumper cable similar to an automotive jumper cable. Should someone power up a generator and fail to isolate the house from utility power, the generator can be fried quite quickly.

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Old 11-29-2012, 07:21 AM   #17
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Fried my generator


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Originally Posted by AllanJ View Post
Are you sure that the interlock was working properly?

Increasingly these days, power company linemen will short to ground the lines they are working on using a jumper cable similar to an automotive jumper cable. Should someone power up a generator and fail to isolate the house from utility power, the generator can be fried quite quickly.
wouldn't that knock your appliances out to.
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Old 11-29-2012, 07:24 AM   #18
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Fried my generator


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wouldn't that knock your appliances out to.
No. No incoming power from the utility; hot to neutral and also hot to hot on the utility lines now looks like a dead short.

The linemen take the jumper away before re-energizing the lines.
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Old 12-02-2012, 05:46 PM   #19
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Fried my generator


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Are you sure that the interlock was working properly?
Sorry, are you asking if the mains were actually off?
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Old 12-03-2012, 05:20 PM   #20
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Fried my generator


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Ok then what you will have to do is test the cord and the adpatour to make sure they are on the same sequince so you will have to use the DVM and run this on Ohm scale or Ohms input ( make sure this cord is 100% unplugged please ) and test the probe neddle to see it that will swing to zero or very low numbers.

Start with the ground slot first ( the L shaped ) on both end including the adpatour then do the netural then the line either side first then other one it should be all the same all the way thru if not then you have issue right there.

This simple test should take about less than 5 minuites so you will rule the cord and the adpatour out to make sure then if clear on that part then you can focus on the generatour head.

That generatour head itself is the excat the same as standard Coleman units so very easy to get into the head with out issue there will be 4 bolts holding the unit up ( you may want to find a scrap wood to block up the engine due the generatour head is supported by one bracket.) unplug the harness and slide the stator out that part is outside of the generatour unit and you can able tell by the winding to see where the short start.

To pop rotor off ( armture ) there will be a very long bolt holding this and the shaft is tapered so you may want to give a quick rap then it will pop off but somecase gear puller will do the trick as well, But becarefull not to nick the windings on the rotor.

But before you do that check with your Coleman generator rep to see if they can do something related to the warranty work due you have pretty new unit.

Bon Chance.

Merci,
Marc

OK, I tested the the combined cords and adapter, and they tested out just fine.

The generator is actually 6 years old, so warranty is not an option. However, before removing the stator and rotor, I've emailed Powermate, just to get their input.

In the mean-time, a couple shots of my handywork:
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Fried my generator-photo2.jpg   Fried my generator-photo1.jpg  
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Old 12-04-2012, 12:11 AM   #21
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Fried my generator


Wow., you did have a hard short circuit there I can tell by the winding there.

The other thing which it catch my attetion is you have N-G on backwards as well the twist lock the ground ALWAYS be on the " L " shaped peice that why you did overload it big time. ( can you take one more photo please but front view so I know which way it look.)

See my diagram above the posting and look at your twistlocker you will see why real quick.

That stator is not cheap BTW as I mention they run about 300 to 350 Euros so it should be about the same amount in your dollars figures.

Go to the inlet recpetale and double check the connection there to make sure it is not crossed connection there. ( make sure that generator breaker is complety off ) and double check the connection there.

And also the termation at the breaker box as well to make sure all the conductors are in correct place as well.

Note: this generatour set up have floating netural which it means the ground and netural is seperated so that one reason why it cause the issue with netural conductor wired on backward the green conductors always being ground while white is netural so recheck all the connection on your cords that including the adpatour.

Merci,
Marc
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Last edited by frenchelectrican; 12-04-2012 at 12:17 AM. Reason: add note on it about floating ground system
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Old 12-04-2012, 10:01 AM   #22
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Fried my generator


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The other thing which it catch my attetion is you have N-G on backwards as well the twist lock the ground ALWAYS be on the " L " shaped peice that why you did overload it big time. ( can you take one more photo please but front view so I know which way it look.)

Merci,
Marc
Marc, I think the picture of the plug was just a bad angle. I think it's (somewhat) clearer below that the ground is attached to the "L" shaped prong. I probably could have still gotten a better angle, but I was rushing to work when I took them.

I'll re-check my connections again tonight after work.

Thanks,
Pete
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Fried my generator-photo.jpg   Fried my generator-photo1.jpg  
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Old 12-04-2012, 11:24 PM   #23
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Fried my generator


Thanks for posting a second photo that give the answer but you have proper conductor colour in grounding slot. The grounding slot is always longer than others.

Try this trick is check the inlet box with your test light first use the ground slot to the casing ( if metal housing ) it should NOT light up at all otherwise you may have compreised ground/ netural somewhere in the system.

Can you post the adpatour as you mention there ? if so that will be great ., sorry to give you a extra work with it but I want to cover all the bases much as possible before I can rule it out.

Merci,
Marc
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Old 12-16-2012, 12:53 PM   #24
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Fried my generator


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Originally Posted by frenchelectrican View Post
Thanks for posting a second photo that give the answer but you have proper conductor colour in grounding slot. The grounding slot is always longer than others.

Try this trick is check the inlet box with your test light first use the ground slot to the casing ( if metal housing ) it should NOT light up at all otherwise you may have compreised ground/ netural somewhere in the system.

Can you post the adpatour as you mention there ? if so that will be great ., sorry to give you a extra work with it but I want to cover all the bases much as possible before I can rule it out.

Merci,
Marc

Just getting back to this after being away. Here are some shots of the adapter.

Regarding the test you mention. Shouldn't there be continuity between the ground slot and the gen case? Or did you mean to say the neutral slot to the gen case?

Thanks,
Pete
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Fried my generator-image-small-.jpg   Fried my generator-image1-small-.jpg  

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