17 KW Generac home generator shuts down on transfer

Nov 14, 2015 6 Replies

My 17 KW Generac generator shuts down when it transfer, voltage at the braker is



250, wire # 44 volts - 125, wire # 11 volts - 125, when I open the main braker generator starts and when it transfers the generator shouts down.

Do you know if it is shutting down due to a *fault* (i.e., overload)? Or, "turning off" because it thinks power has been restored (and it isn't needed)?

E.g., if you open the main breaker and then close it *before* it transfers (alternatively, open the OUTPUT breakers), does it "shut down" differently?

On Sat, 14 Nov 2015 23:44:04 +0000, CMR wrote in

Generac generators are notoriously unreliable.

The transfer switch complicates things. Like someone else posted, it could be that something is wrong in the transfer switch and it thinks power is back or it could be something wrong with the generator itself and it can't maintain voltage under load. Some easy things to try, would be to put just a minimal house load on it. Or if he can figure out how to try running a load without the transfer switch involved, ie exercise the generator directly to prove that it is working. But how much he should get involved depends on his skill set. This doesn't sound trivial and it does involve 240V, potentially from the generator and utility too.

Maybe post your question at:

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