Ken Sterling (Ken Sterling) wrote in message
...
Bruce (or anyone qualified).....
Three phase power ----- isn't each leg 120 degrees from the others?
Single phase power - 220v - isn't each leg 180 degrees from the other?
If the above is correct (and I'm hoping I understand it correctly) it
would stand to reason, that if you needed to hook up a 220v single
phase machine and you had 3 phase available at that location you
could, (and I am not saying it's correct) connect to two of the three
phases and run the machine, even tho the sine waves wouldn't be 180
out, it probably wouldn't hurt anything. Am I correct in this
assumption??? Any and all comments welcome
Thanks.
Ken.

If your three phase power is 220/230/240 volts phase-to-phase, which is
common, you get normal 220/230/240 volts single phase between any two
phases. So your machine will not only work, it will be connected to its
proper power.

This topic generally starts a really long and involved thread, so stand by.
There is quite a bit more that can be learned about the voltages, currents,
and phase angles and there is some disagreement about the terminology
involved.

Don Young