Professional Custom Lamp Holder Accessories Manufacturer

The neutral wire and ground wire these two are different concepts, not one thing, do not exchange or mixed.the ground potential is neutral, is the nearest ground, neutral wire to ground potential is not necessarily neutral. The neutral wire is in the nearest substation, and the local ground may have a potential difference.Sometimes people advised the neutral wire. When the wire is electric, but when the device is not working, it may be neutral wire, from the point of the device near the end of the neutral wire is with 220V, and the same as how to distinguish between neutral wire and ground wire.

One, wiring standard:
Live wire color shall be red, yellow, green
neutral wire (N) color must be black, blue
Ground wire (PE) color must be yellow, green, green color line

In the face of the 3 hole socket, left neutral, right live wire, middle ground
In the bus is provided with a leakage circuit breaker, with a bulb connected in the live wire and the neutral wire or live wire and the earth wire, such as earth leakage circuit breaker action, is the ground, otherwise it is neutral wire. Should pay attention to safety when testing may there will be a small spark, to have a heart to prepare, don't frighten jump!

If at home:keep electricity on, measured with a pencil, will light the live Wire ,it will switch at the neutral wire is disconnected, only through the line of fire, home lights play in the open position, measured with a pencil, just not bright, now lit the whole is the neutral wire 3, the remaining does not shine is full of ground of the most simple, take a 220V lighting, pencil were used to determine the line of fire, respectively, with two tree line and  live Wire connected with the lamp cap, from brightness to distinguish between neutral and. Light is neutral, slightly dark.


The multimeter is placed in the exchange of files up to 500V, hand pinch a pen, another pen are respectively contacted with the power line, high voltage wire is, the lower is the neutral wire, voltage of 0 is ground neutral wire of resistance less than 4 ohm for reliable grounding. The pressure difference between the 250V and the neutral wire, the wire and the ground wire is measured with the use of the meter, the difference between the two values and the ground wire is less than 5V.