I am not an expert in this area but my friend is and because you have 2 phases ineffect going to the motor there is a better power advantage. The windings also have less heat buildup,and you draw 1/2 the amps thru the wire. The current is not called 2 phase but it is out of phase(both sides of the box/poles),the sine waves are a complete 180 deg. out of phase of each other and such gives the armature power in X and Y axis instead of only X which results in a more efficent motor. There is only advantages to 220/240v use in motors. 3 phase is even better, X,Y,Z axis are involved.
If some one is a Physics expert they may be able to explain it better.
This may be of interest,
[ 07-22-2004, 05:12 AM: Message edited by: Andrew Benedetto ]
I've read the ridgid manuals and they recommend that if you choose to re-wire for the 240V option that you use 240V 15 amp. I have a 240V 20 amp outlet in my garage.
The only difference is the 15 amp circuit would normally be 14 guage wire with 15 amp breaker and the 20 amp circuit would be 12 guage wire with 20 amp breaker. Would using the 20 amp circuit be a problem or should I have it converted to 15 amp.
Use the 20 amp! The ampere rating is the maximum amount of current (amps) that the line can safely handle continueously without beginning to heat. So a 20 amp circuit will handle "up to" 20 amps. Personally, your wire sizes are about minimum for the amp rating. I never run anything less than 12 gauge wire, even if it is on a 15 amp breaker.
Hope this helps,
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