Bobbo wrote:
beemerphile1 wrote:
SPST and wire it in parallel with the thermostat.
That will allow you to turn on the fan even if the thermostat didn't, but it won't allow you to turn the fan off if the thermostat has it on.
You need a 3 position switch....
You are correct, I should learn to read more thoroughly. I thought he wanted to choose between thermostat control or manual on. I neglected to note that he also wants to be able to turn it off.
So I change my answer to SPDT. The DPDT may be easier to find and will also work.