Hmmmmmmmmmm
Thats right. Hmmmmmmmmmmmm. What causes the hum in the transfer switch? Been living with it for quite some time. Any ideas before I take the cover off & start poking around?
Forum Discussion
Let it hum, isconnect - kill incoming power
Then in a rush, check the temperature of the relay with your finger. Is it hot to the touch?
Then in a rush, check the temperature of the relay with your finger. Is it hot to the touch?
