BW sez:

"...The entire USA gets 120 volt single phase from 3 phase sources."

Cute - but not quite right. See John's answer above.

Bob Swinney

"bw" wrote in message
...
wrote in message
oups.com...
Can you get 120v single phase by picking off one line of 240v 3 phase
as long as you have a neutral to carry the current back to the box?
Thanks, Steve

Yes, but depending on your load requirement, get an office building
electrician to wire it.