10-04-2010, 03:35 PM
All the poles around here have 4 insulators. The cross arms only have 3 as Doctorwayne pointed out, the 4th, or neutral line, is on the pole itself, about 5 feel below the 3 hot lines. Sometimes one of the 3 hot lines is placed on the pole as well, on an insulator at the very top.
-Dave