Question about Generac Guardian Series 8 kW Air-cooled Automatic Standby Generator

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Hello i just started my 8 kw hole house generater ran greatput my electric water heater on 26 amp draw andsmoke came out exhaust vent shut it down ran again great turned only heater on again took amp

Why cant it handle 26 amps on black side( water heater side) 19 amps on red side(lights tv pc)tx

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  • 17 Answers

8 kW has a 35 amp breaker on the unit. A typical hot water is 4500 watts at 240 volts = 18.75 amps on each leg. If you are measuring 26 on one side and 19 on the other it should be ok. If it is shutting down you may have a fuel problem or you may need to adjust voltage if it's too low. Which model of 8 kW is it?

Posted on Dec 13, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: generator 30

fuse are meant to protect the costlier part of the machine thereby damaging itself.  there is probably overloading of your circuit. call the electrician and find the actual power required by your house.  there is a possibility of having a short circuit in your generator. your local electrician can check it.

Posted on Jan 24, 2009

  • 26 Answers

SOURCE: Attempted to start Generac Guardian 15 kw air

I work on these every day. Its either gonna be the rotor or stater, the voltage regulator, but most likely its a bad stepper motor which is the throttle motor, or control board. Thats all that could be causing that so its one of those. If its the rotor or stater thats bad it causes the generator to RPM up because it thinks its not producing enough power due to that. I had the same problem with the same one we just fixed and it was the slip rings on the end of the rotor so bad rotor.

Posted on Jul 09, 2009

protek480
  • 1730 Answers

SOURCE: The generator starts up runs for about 15 seconds and shuts down.

Check the oil pressure switch



If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Posted on Aug 21, 2009

  • 1 Answer

SOURCE: Generac Guardian 15 kw overspeed fault

Did you remember to set the overspeed shutdown threshold on the control board?

Posted on Jun 07, 2010

wentlanv
  • 710 Answers

SOURCE: Just returned from a trip

Hi Scott,

Since the generator starts but there is no power to the control board, there is an electrical problem inside the generator.
First check the circuit breaker at the back of your generator. If the breaker is on, then your generator is in serious trouble.
Call a repairman, but also keep in mind you may need a new generator.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie

Posted on May 07, 2011

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RV water heaters are mounted against an outside wall. Go outside and look for a removable cover that has a mesh vent installed.
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the unit has gone into over load
The total power requirement has exceed the output of the generator
for example if the generator is a 2.500 kw or kva then it will generate well at 1.8 kva or kw but it will not run forever at 2.5 kva -kw
When a ac is running the power requirement will be constant on the generator and with the fridge as well then the load will be at the maximum out put of the unit.
when the fridge starts again the extra load will exceed the max out put of the generator and it will slow down ( lights dimming ) and eventually go into overload mode
have an accredited electrician calculate your maximum load requirement for an external power supply and then get a unit that is at least 15.. kva kw better that required
generally fridges use 1000watts , ac conditions will draw over 3000watts and any thing else adds up . I am guessing that your generator is only 2500 unit

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The .4 GPM and .26GPM numbers are fairly typical for tankless units.
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