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Problem with Generac Transfer switch mikegold 04-16-2007
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Posted by mikegold on April 16, 2007, 12:00 pm


Just started up my Generac Natural Gas generator for the first time
today.

Transfer switch automatically switched over to generator power as
expected however, when I turned utility power back on the switch did
not transfer back to utility.

I had to open the switch and manually transfer back to the utility
position.

This happened both times I tested.

Any input as to what would prevent the switch from switching back to
utility?


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Posted by Doug Miller on April 16, 2007, 12:38 pm


>Just started up my Generac Natural Gas generator for the first time
>today.
>
>Transfer switch automatically switched over to generator power as
>expected however, when I turned utility power back on the switch did
>not transfer back to utility.
>
>I had to open the switch and manually transfer back to the utility
>position.
>
>This happened both times I tested.
>
>Any input as to what would prevent the switch from switching back to
>utility?

Have you asked Generac's tech support department? Seems to me that's the
first place you should check...

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

Posted by Pete C. on April 16, 2007, 1:15 pm


mikegold wrote:
>
> Just started up my Generac Natural Gas generator for the first time
> today.
>
> Transfer switch automatically switched over to generator power as
> expected however, when I turned utility power back on the switch did
> not transfer back to utility.
>
> I had to open the switch and manually transfer back to the utility
> position.
>
> This happened both times I tested.
>
> Any input as to what would prevent the switch from switching back to
> utility?

How did you test, by turning off the main utility breaker? How long did
you wait after turning utility power back on? Most transfer switches
have timers and won't transfer back to utility for about 10 minutes
after it comes back to insure it is stable.

Posted by Bob on April 16, 2007, 2:32 pm


> mikegold wrote:
>
> > Just started up my Generac Natural Gas generator for the first time
> > today.
>
> > Transfer switch automatically switched over to generator power as
> > expected however, when I turned utility power back on the switch did
> > not transfer back to utility.
>
> > I had to open the switch and manually transfer back to the utility
> > position.
>
> > This happened both times I tested.
>
> > Any input as to what would prevent the switch from switching back to
> > utility?
>
> How did you test, by turning off the main utility breaker? How long did
> you wait after turning utility power back on? Most transfer switches
> have timers and won't transfer back to utility for about 10 minutes
> after it comes back to insure it is stable.- Hide quoted text -
>
> - Show quoted text -

That's the way the big units work, transfer switch transfers 10-15
minutes after commercial power is restored, then has about a 3-5 min
generator run without power for a "cooldown" before final shutdown.
Bob


Posted by Smarty on April 16, 2007, 2:36 pm


The Generac unit I have (7.5KWLiquid Propane/6.5KW NaturalGas) switches back
to utility power in less than a minute. I am guessing it takes 30 to 45
seconds.

Smarty


>> mikegold wrote:
>>
>> > Just started up my Generac Natural Gas generator for the first time
>> > today.
>>
>> > Transfer switch automatically switched over to generator power as
>> > expected however, when I turned utility power back on the switch did
>> > not transfer back to utility.
>>
>> > I had to open the switch and manually transfer back to the utility
>> > position.
>>
>> > This happened both times I tested.
>>
>> > Any input as to what would prevent the switch from switching back to
>> > utility?
>>
>> How did you test, by turning off the main utility breaker? How long did
>> you wait after turning utility power back on? Most transfer switches
>> have timers and won't transfer back to utility for about 10 minutes
>> after it comes back to insure it is stable.- Hide quoted text -
>>
>> - Show quoted text -
>
> That's the way the big units work, transfer switch transfers 10-15
> minutes after commercial power is restored, then has about a 3-5 min
> generator run without power for a "cooldown" before final shutdown.
> Bob
>



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