[j2b1]

Our submersible pump stopped working so I replaced the pressure switch. I was very careful to wire the new switch the same as the old one, however the new switch blew a fuse when I turned the power on. I then thought I would try cleaning the points on the old switch with emery cloth and try it again. The old one also blew a fuse. Is there any other reason for blowing a fuse other than having the switch wired wrong? (When the pump originally stopped working it did not blow a fuse. Also, There was no pressure in the tank and the contact points were closed when the pump stopped working... if this helps diagnose the original problem).

[Stratmando]

Try with the pump disconnected.

[jlisenbe]

http://www.catskillhouse.us/blog/wp-...tch-wiring.jpg

This shows how it should be wired. Each set of points should have one wire from the breaker and one going to the pump.

[Stratmando]

Looks good, I would remove 1 wire to pump and try, then the other wire and try.
This will verify no short in the wiring, and pump is likely spent.
If you can access a means to rotate a little, turn power back on, then try again.