"Gary S." Idontwantspam@net wrote in message
...
On Sat, 5 Mar 2005 16:37:28 +0200, "asta" wrote:

hi!
i've always wondered what phase-shift there is between those two 110V
lines
in an USA 220V AC net system.
There cannot be any, as they come off the same transformer.

Actually, the lines are opposite phase (180 degrees), 110 VAC RMS relative
to neutral/ground. If they were the same phase, then your 220V appliances
would see 0V.

Tom