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I have a 10kw/8kw portable generator. started up and runs fine but no ac output. checked breakers, all are on ok but no power to receptacles.is there something i can try to reset generator?

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Bob,

Not sure what generator you have, but there are videos on how to test the portable generators on this page:

http://www.generatorguru.com/help-me-fix-my-generator-repair-advice/

Posted on Dec 19, 2016

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mamicheddy
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SOURCE: Generac portable generator doesn't produce power

Remove front cover on the genset and you will see the brushes and rings. Clean the rings if black with emory cloth and inspect brushes. Flash the fields by apply a 12V battery to the brushes. the brush closest to you or the bearing is connected to the positive side of battery and the back brush is negative. You have to do this with genset running. You should notice your voltage climb up to over 50Vac maybe even over 100Vac. Make sure to use rubber gloves when flashing fields and keep hands away from rotating parts. if voltage does increase when flashing the the voltage regulator is shot. If voltage does not climb then you will need a new genset or generator end.

Posted on May 15, 2009

  • 1 Answer

SOURCE: portable generator head stopped making power

portable generator head stoped making power engine runs fine sircut brakers are fine

Posted on Mar 16, 2010

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Engine runs fine but probably overloaded the generator. Is it just brushes or coil too.


Site unseen i would say its neighter the brushes or the coil . And more the likely the problem is with a transformer converting the DC off the generater to AC for your output . If the engine runs ok and the armature in the generater spins ok and you don;t have a million hours on it should work at least somewhat . Try testing the output on the AC side see what you get for AMPS you will need a muilty meter set to AC amps

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No or little ac output


By ac you mean receptacles, not ac welding? 
If so what about welding output on AC (DC)?

If welding is OK then you may have breaker or fuse problem.
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I did not understand how you turn on generator, as it is always turned on.
If you use the ON/OFF switch it is stopping the prime mover.
If you reset the AC breaker without load, and it stops - it means that you have short circuit after the breaker. Check the output receptacles.
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Portable generator head stopped making power


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Had to use it over the weekend, had coffee maker, tv and sat.receiver hooked up then it just quit. Breaker wasn't tripped, and the meter showed 120v output, tried different appliance's but no power at all....


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