Meaning of wire and cable e

E stands for (yellow and green ground wire). The English name of the ground wire is EARTH, short for E. Generally, yellow-green or black lines are used.

Wire and cable N, L and their representative meanings

In the electrical appliance, N represents the neutral line (zero line), and L represents the phase line (live line)    1. The English name of phase line (fire line) is Line, or L for short. Generally, red, yellow and green lines are used.    2. Neutral line (zero line) is referred to as N in English. Blue lines are often used.    

The difference between zero line n and live line l in wires and cables

1. Color: in the power cable, yellow, green, red and beige respectively represent phase a, phase b, phase c (three-phase live wire), blue represents zero wire, and yellow and green represent ground wire.    2. Electric pen: When the live wire is tested with an electric pen, the neon tube will glow, while the zero wire will not.    3. Voltmeter: the voltage between different phase lines (i.e. live line) is 380v, the voltage between phase line (live line) and zero line (or good grounding body) is 220V, and the voltage between zero line and good grounding body is 0v

Color marking circuit in wires and cables

According to the current standard of China, when the third line in GB2681 is marked by the color of the conductor, it should generally be phase A yellow, phase B green, and phase C red. Zero line - light blue, the ground line is yellow and green. If it is charged, it can be checked with an electric pen. One line that makes the neon lamp of the electric pen light up is the live line, and the other is the zero line; Or use the AC voltage range of a multimeter to measure the local voltage. The zero line is zero and the live line is 220v