The zero line is grounded, why is it still on the pole?
Good question, I do not know why the pole is still on. Only the zero line to the ground, and it does not take away the formation of the loop, then it is also useful to ground?
What is the difference, that is, the requirements of anti-ultraviolet wire
Cables and wires in the size, structure, use, characteristics, there are many differences, it can not be confused with the two
VVR cable for the polyacetylene insulation and external protective layer of soft copper cable, plus K in front of the control cable.
