I have a new 5 horse 80 gallon upright ingersol rand compressor. I need to wire it up. My outlet I wired years ago in hopes of having a new compressor I ran 4 conductor cable. red,black,white, and ground. My compressor has connections inside the pressure switch but only three. Red and black I understand, however do I put the white neutral on the third spot in the switch or do I put the ground there? This is in my detached garage with a 100 amp sub panel. Just want to make sure it is right.

Also, I assume a dryer type plug is not a good Idea and I need a disconnect with the wire from it to the compressor in armor shield?

I appreciate it!