How is the measuring pen used to distinguish between live wire and zero wire?

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In our life, although we don't touch the sideline, we see a lot. Electricians will use pencils to measure wires, and they will also use pencils to detect and install them when decorating their homes. So how does a pencil distinguish between a live line and a zero line? Today, Bian Xiao will talk to you about this problem, hoping to help you. \ r \ nFirst of all, how to use the stylus to distinguish the live wire from the neutral wire. First of all, we need to check whether there is a safety resistor in the stylus and whether the stylus can be used normally. If the stylus is wet or flooded, it is easy to break down, so we need to make sure there is no moisture and water. \r\n2。 Make sure that the test pen can be used normally, and then we can prepare for the test. Be careful not to touch the metal probe of the test pen with your hands, which may lead to electric shock. \r\n3. Our hands should grasp the tail end of the test pen, that is, the position opposite to the metal part, and it is best to wear anti-electric gloves. \r\n4。 When measuring electricity, be sure to pay attention to whether the neon light bulb of the measuring pen can emit light normally. If it can emit light normally, it can be used. If not, it can't be used. We can't see whether it shines in the light or in the sun. We can block the light with one hand and see if it will shine. Don't misjudge. The effect of light sometimes seems to be luminous. \r\n5。 If it doesn't glow, the pencil is dead. At this time, it can't be used to measure the line, which may easily lead to electric shock. \r\n6。 After all the above steps are checked, we can begin to measure the zero line and the fire line with a pencil. We can put a pencil in the wire to measure. The live wire will glow, but the neutral wire will not. \ r \ The above is the information summarized by Bian Xiao about how to distinguish the live wire and the zero wire with a measuring pen. I hope I can help you. If you have other home or home improvement problems, you can pay more attention to Qijia.com.

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