I am installing a 20kw Generac generat or, how does the generator communicate with the transfer switch? there is no wire diagram for this all that is hooked in is the utility, the generator and the panel...

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On auto start, unit sputters and I smell gas. .... The 20kW automatic standby generator has the option to delay start up during an ... This is for a guardian 20kw. ....has been designed to make the battery installation and removal so difficult? ... The air cooled generators are designed to allow for the smallest footprint while still ...

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Generac's Guardian Series 17kw automatic standby generator does not come with a.... The automatic response features of our air-cooled units initiates the unit's startup,.... This week I tried the same and it tries to start but just sputters and fails until .... A C delayed start still chocks 17kw generator would a hard start kit help?

On auto start, unit sputters and I smell gas. On manual start ...

Check the battery condition, and charger. Check also the fuses in the transfer switch (note they are line voltage so maybe call an electrician)

the largest contactor they make is 50 amps!

THERE SHOULD BE A LOW OIL SENSOR ONTHE SIDE OF THE MOTOR PLEASE MAY CAUSE THE MOTOR NOT TO START YOU SHOULD BEABLE TO JUMPER THE TWO WIRES ON THE SENSOR AND SEE IF THE GENERATOR WILL START

No. They are fine. The voltage is 220. But the amperage is nearly nothing because its just for signaling the generator and switch when the powers out. I install, repair, and service generac products for a living.

It is always good to install a large enough wire where the maximum load can be drawn plus a little extra for safety. 7 gauge wire will do, if it was mine I would use 6 gauge wire. If the length is over 20 feet but not longer than 80 feet go to the next larger size wire.

Sounds like the electritian wired something wrong. Control wiring for that generator should be:
N1 and N2 = 240 vac utility input
Wire 0 = ground
Wire 194 (15B) = + battery
wire 23 = transfer signal

just 4. I install generac switches and generators

The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.

Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.

Regards,
Carl