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One goes directly to the lamp head, and one passes through the switch to another person's foot to the lamp head.
The switch is connected to the live wire, and it is even more unsafe to connect the zero wire, but the two-pin plug is not necessarily the live wire into the switch when you plug it.
The neutral wire needs to be connected from the power supply, for example, if there is a neutral wire from a nearby outlet, you can split a wire out.
Here's a diagram to show you: read it and you'll understand. >>>More
Don't deal with it, if the switch controls the live wire, when the switch is turned on, both wires will be electrified. The two wires of the switch, one is the live wire, and the other is the control wire, which is not the neutral line.
Hello, this can only be the input where the wire is adjusted,