Just set the test range of the multimeter to the highest range of the AC range (1000 or 500, etc.) or higher than the voltage to be measured. Place it on the low-voltage distribution cabinet in the computer room or on the distribution box or wiring strip at home. Assume that one end is Live wire, one test lead is inserted into one end of the hypothesis, and the other test lead is inserted into the other two jacks or terminals respectively. The result is that both corresponding terminals of a certain terminal are displayed, which is the live wire, which is what we The phase line L is mentioned; as for the neutral line, it is not easy to judge. If you must get a result, while you are on the live wire, the remaining two points are either ground or neutral (nonsense, sometimes not necessarily). At this time, connect the test lead to one of the two terminals, and the other test lead Connect to the earth. If the voltage is displayed, it is the zero line, that is, N, otherwise it is the ground line G.
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