Replies

1. 
   deblacksmith | Apr 15, 2003 04:34am | #1

   Yep,  go with the 50 amp it of course will handle the 40 amps.  In fact most plugs for 30 and 50 amp are dual purpose -- you just change one blade to convert from 30 to 50 amps.  (The 30 amp uses the L shape and the 50 amp the straight.) 

   Or hard wire it using the correct size cable and a proper disconnect.  This meets the safety requirements.  While many folks don't do this, you should open the power to the saw any time you change blades.  Also it is really good to have a disconnect mounted high on the wall where a small person (child or grandchild) can not reach it.

   Now ask you next question -- should you wire this with a four wire connection or a three wire?  Since it is a 240 volt only (no 120 volt required) a three wire connection will work fine -- but some areas may require a 4 wire connection under current code requirements.  (Hot, Neutral, Hot, Equipment Ground)

   If you don't understand all of this get some on site real electrical help.

   deblacksmith

1. 
   JohnSprung | Apr 15, 2003 09:21pm | #3

   Even though three wire would work for this saw, if it's a receptacle, I'd go ahead and put in all four.  It's not that much work and expense for the neutral conductor, and maybe some day you'll want to unplug the saw and plug in some other device that uses the neutral.

   -- J.S.

2. 
   dwyates | Apr 15, 2003 09:56pm | #4

   I guess I will have to go w/ the 50 amp plug & receptacle combo - I just find it odd that the NEMA chart, of all sources, would not show a 40 amp combo.

   Anyway, thanks to all who replied.

2. 
   MarkH128 | Apr 15, 2003 04:38am | #2

   I wouldn't use a 30 amp outlet on a 40 amp circuit. Use the 50 amp outlet. Of course the saw will not probably use over 30 amps unless stalled, but you don't want a wimpy service. And the 50 amp plugs look cooler.