Dave wrote:
Utility power outage and the Generac 04390-2 (13kW NG) did not start
in 50F weather. Assuming for now the problem is not with the
generator because when the 200-amp breaker installed between the
utility meter and the automatic transfer switch was moved to the off
position, the Generac started as expected. Does this description
sound like a relay or other automatic transfer switch component
waiting to fail more permanently? Replies appreciated.

Anyone who tries to answer this question with the information given is
bound to be wrong or really lucky. Is the installation equipped with an
automatic transfer switch?
--
Tom Horne