Grounding part of the power distribution system

- May 12, 2019-

(1) Phase line (L). Conductors that carry electrical energy are normally not grounded.

(2) Neutral line (N). Connected to the neutral point of the system and can act as a conductor for the transfer of electrical energy.

(3) Protection Neutral (PEN). A conductor that has both a protective wire and a neutral wire.

(4) Power grounding point. Ground the point where the power supply can be grounded (usually the neutral point).