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If it's really a tube, then your floor is really thin enough.
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What is the reason in the end? The restaurant lights in my house are dripping down 2 months later.
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The decorator can do it, let them solve it.
The first thing to figure out is that there is only a control line (i.e., a live wire) in the switch, and there is no zero line, and the zero line is in the ceiling and connected to one end of the lamp; The live wire is directly connected to the switch, and the power supply on the lamp reaches the lamp through the switch. As for the two lines behind the lamp, which is the live wire and which is the neutral line, you just need to test it with a voltage tester to know. >>>More
If the single-control switch controls the light, the bulb should not be connected to the live wire, it should be connected to the neutral wire, and the switch should be connected to the live wire. >>>More
Yes, but for safety reasons, the live wire should be connected to the switch, because if the switch is connected to the zero wire, the light will be turned off after the switch, but it will still be electrified, which is dangerous. Generally, red and black are the line of fire, and blue is mostly the line of zero. I hope you will think twice. >>>More
That is, the lamp is broken, what are you waiting for if you don't replace it with a new one?
It should be that there is a problem with the line, and the home circuit is generally connected in parallel, so one or two are broken, and the others can still work normally, and now they are all broken It can only be a problem with the line, so you look for a worker!