On Mon, 24 Apr 2006 02:51:52 GMT, m II wrote:

David wrote:

Have you ever had to deal with a 3 wire 3 phase power drop (i.e.
without a neutral)? Not very common. Drives electricians nuts.


Why would it do that? A three wire feed implies a balanced load, such as
a three phase motor, charger or welder supply. Voltage drop is measured
line to line and line current is still measured the same way, as are
power factor numbers.

The only difference in a three phase motor connection is assuring
correct direction for motor rotation. Some things break in a dramatic
fashion if turned the wrong way.


Where does the 120 come from?