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deadonion 02-06-2014 06:44 PM

generator has no power
hi. last summer i purchased a returned 3750watt generator from home depot. i got it for half off with no warranty due to the return.
it worked great when the power went out for a few days, tgen suddenly their was no electrical output, though the engine runs great.
i took a look at it and noticed where the wires come out of the alternator, they werent run through a grommet. the vibration cut through both of them.
i put the wires together figuring it would work again.
no dice. it still runs but with no output.
what gives?

nealtw 02-06-2014 06:53 PM

You did check for fuses and breakers?

deadonion 02-06-2014 07:18 PM

yep theyre all good!

nealtw 02-06-2014 07:53 PM

That's about as far as I can go, post the brand and model, so someone that knows this stuff might help you.

havasu 02-06-2014 09:20 PM

Best advice I could provide is to get a wiring schematic and check it all. It is possible that your stator is broken, but check the wiring first.

generyak 05-07-2014 07:42 PM

Most likely the stator is open or shorted. When those two wires shorted to the frame the gen would have produced as much amperage as it possibly could have until either the wires burned up and lost contact with the frame or the stator burned up. your best option for troubleshooting, assuming they are stator wires, would be to use a digital multi-meter and ohm out the stator to see if it is open.

to do this you will need the schematic to find out which wires go together. if it is a 240v single phase generator there will be 2 power wires and 2 neutral wires. hopefully they have numbers on them, if so take the corresponding power wire and neutral and ohm them out. if it says infinite or open you might as well buy a new gen.

those portable generators sometimes have a capacitor that helps feed the rotor, if this is the case checking capacitance would be a good idea. If the capacitor top is open or leaking fluid at all that may be the cause of the problem.

The slip rings may have also over heated causing the brushes to crumble losing contact with the slip ring. if this is the case then no field would be produced and no voltage.

nealtw 05-07-2014 07:47 PM

Generyak: Welcome to the site, drop over to introductions and intraduce yourself, Just hit new thread

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