On Fri, 04 May 2007 16:40:19 GMT, "Toller" wrote:



Better do a slower calc. Probably about 23a.



Don't doubt you're right as I just used:

E=IR or I=E/R

W=I^2R or I*(E/R)*R

therefore
W=EI

so 220V*20A = 4400 watts (avaialble)

1HP (electrical) = .746KW (source IEEE handbook circa 1968)
4.5HP= 4.5*746 = 3357 watts (required)

Obviously I missed something like adjusting for efficiency.

Don't have the saw yet so I can't read the plate on the motor.

In any case, thanks for the input.

Regards.