Originally Posted by JoeMazz
I've replaced my transfer switch and am still not sure it functions properly.
It works, but it struggles with switching over, and sometimes makes a pretty large bang when it does. Anyone else experience this?
Then you posted
"I've never had a generator or a transfer switch.
Is this normal?"
No - this is not normal, we all have both a genny and a transfer switch.
Remember, you just replaced yours.
A loud thump is a good thing when you connect to a source of power. That is the transfer switch closing the contacts to close the circuit.
The transfer switch senses line voltage either from the genny or the shore plug and mechanically connects contacts so the power source is available to the RV. The contacts slamming together is the sound you hear - perfectly normal.