Imo best bet is to interlock it with the shop's lights.
The timer will work but it doesn't break both poles of the 240vac being a SP "single pole" relay. That stops the motor effectively but you should place labels around stating there's still 120vac present hot-to-ground.
It doesn't need to. The timer can be wired in series with the coil on the starter.
The OP can use one with a much lower load rating that way, too.
Tommy
Is it possible to set up a timer to a Quincy QT-5 5hp compressor?
Not up for it running during the night if we forget to turn it off.
Would a Tork 24hr timer work like this?
Tork 1101
or maybe suggest a different type of timer.
Thanks
Ronnie
