2007-07-05 05:44:23 · 3 answers · asked by alexs s 1 in Consumer Electronics ➔ Other - Electronics
Most motor winding are Delta type and the ground simply grounds the case without current flow. Each phase would then be 240 or 460 volts. That is the voltage between A and B phase or A and C phase or B and C phase. The motor has changable wiriing to allow adjustment for the two different voltages.
2007-07-05 10:34:20 · answer #1 · answered by wapermaster 3 · 0⤊ 0⤋
That depends on where you measure it. If you measure across phases they will be 240 but if you measure to ground they will be 120. The motor winding is like a "Y" with ground at the center and 120V at each of the arms and the bottom. These are also 120 degrees out of phase which is why the voltage measured across phases will read 240.
2007-07-05 12:50:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Since you don't seem to know exactly what you're doing, please seriously consider having a licensed electrician take a look at the wiring. These are hazardous voltages and three phase is typically used for lots of power -- a mistake can kill one or more people very quickly.
The few dollars you'd save aren't worth the tragic results that will occur if you're wrong...
2007-07-06 01:53:04 · answer #3 · answered by sd_ducksoup 6 · 0⤊ 0⤋