First, how to distinguish between charged zero line and ground wire?
Color distinction: the zero line is generally black and blue, the fire line is generally red and brown, and the ground line is generally yellow and green; Voltage discrimination: Touch test with electric pen, in which the live wire voltage is high, the electric pen will be on, the neutral wire voltage is low, the electric pen is dark, and the ground wire has no voltage, so the electric pen is not on.
Second, what problems should be paid attention to in home wire connection?
1, pay attention to distinguish wires.
As mentioned above, it is very important to distinguish between live wire, neutral wire and ground wire, mainly to avoid the problem of wrong connection. If the live wire and the neutral wire are connected backwards, it is easy to cause problems. For example, the live wire and the neutral wire in the switch are wrongly connected, although it does not affect the use, but the lamp holder will always be in a charged state, which has certain security risks.
2. Pay attention to insulation treatment
After the household wires are connected, the insulation treatment of the wiring part must not be ignored. We can wrap it with black fireproof insulating tape, which needs to be wrapped several times to prevent the metal joint from being exposed, causing electric shock, electricity leakage and other problems.
3. Pay attention to marking.
After the wires are connected, they need to be marked according to different wires, which is more convenient for subsequent maintenance and overhaul. For live and neutral lines, you can use basic colors to mark them.
Editor's summary: The above is an introduction about how to distinguish the zero line and the ground line of the live wire. I hope what Bian Xiao shared can give you some reference. If you want to know more, you can pay attention to our family. Com information.