Nat Hager asked in USMA 244575:
One more question on the same vein:
What's 3-phase, and what's the main advantage in efficiency? (as opposed to
split-phase or "4-phase", if such a thing existed).
I know it's universal for overland power transmission.
Nat
In 3-phase the phases are separated by 120� between each pair of
phases. With 3 phases it is easy to produce a rotating magnetic
field in an induction motor which does not require brushes. 3-phase
may have other advantages, but I am not an electrical engineer.
There are no 4-phase systems.
--
Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Telephone 416-486-6071
