On Sat, 05 Mar 2005 14:53:04 GMT, Gary S. Idontwantspam@net wrote:

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.

The phase shift in the Western hemisphere residential power
distribution system is 180 degrees, since the system is basically a
single phase system, with a 2x110 V secondary, with the centre tap
grounded.

The rest of the world is using some three phase systems for
residential distribution, either 127/220 or 230/400 V.

Paul OH3LWR