Replies

1. 
   bill5335 | Jan 22, 2010 12:32pm | #1

   What size switch did you install? Is it rated for 15 amps, 30 amps? What size motor do you have?

2. 
   JohnWW | Jan 22, 2010 03:46pm | #2

   More information on the saw would be useful, type of saw, model number, motor size etc. Switches rarely burn up on power tools, that your saw has gone through several suggests that something isn't right.

3. 
   northhouguy | Jan 22, 2010 03:50pm | #3

   You have to be careful when you install a switch to operate an induction motor.

   You can't just look at the full load amps of the motor and size your switch. The switch must be rated for the horsepower of the motor. The current of an inductive load, (your tablesaw motor), is a lot harder to break than a resistive load current, (an incandecent lightbulb). (Current can't change instantaneously in an inductor, thus the field has to collapse, and blah, blah, blah... thank you Professor Stull)

   So go to an electrical supply house with the motor nameplate data. Tell the guy what you want to do and get a switch that will handle the horsepower you want to switch.

   It's going to be more expensive than an amp rated switch, but should last a long time. Good luck.

   Best regards,

   Fred

4. 
   northhouguy | Jan 22, 2010 04:00pm | #4

   Here is a website that might help

   http://www.hubbell-wiring.com/htm/IndustrialManualMotor.htm