[77newell]

One way to check the transfer switch would be to disconnect the wiring going to the main breaker box at the transfer switch, then try switching back and forth between Gen and plug-in supplies.

Before doing that I would check Gen voltage at the xfer switch.

Does anyone know what circuit is protected by the fuse that keeps blowing, what does that circuit do? I belive in some cases the fuse simply protects from shorts in the switch coils and in other cases it is blown to shut things down when a whole range of hazards are detected.