Wiring Method of a Single-Pole Double-Throw Light

     A single-pole double-throw light refers to using two single-pole double-throw switches to control one light, which makes it convenient to turn the light on and off from different positions. The following is its wiring method: YouTube：https://youtube.com/shorts/mtd0n_zSGIA 

Required Materials

- **Single-Pole Double-Throw Switches**: Two. Generally, there are three terminal posts L, L1, and L2 on each switch.

- **Wires**: Generally, copper-core wires with a cross-sectional area of 2.5 square millimeters are selected. It is better to have different colors for the wires to facilitate wiring.

- **Insulating Tape**: Used to wrap the wire joints to prevent electric leakage.

Wiring Steps

1. **Determine the Live Wire and Neutral Wire of the Power Supply**: Use a voltage tester to find the live wire of the power supply. Generally, the live wire is a red or brown wire, and the neutral wire is a blue wire.

2. **Connect the First Switch**: Connect the live wire of the power supply to the L terminal post of the first switch. Then, lead out two wires from the L1 and L2 terminal posts respectively. These two wires are called "double-control wires".

3. **Connect the Second Switch**: Connect the two double-control wires led out from the first switch to the L1 and L2 terminal posts of the second switch respectively. Then, lead out one wire from the L terminal post of the second switch and connect it to one end of the lamp holder.

4. **Connect the Neutral Wire**: Connect the neutral wire of the power supply directly to the other end of the lamp holder.

5. **Wrap the Wire Joints**: Wrap all the wire joints with insulating tape to ensure good insulation.

 Precautions

- Be sure to cut off the power supply before wiring to ensure the safety of the operation.

- Pay attention to the color distinction of the wires when wiring, and wire according to the specifications to avoid incorrect wiring.

- Tighten the terminal posts of the switches and lamp holders to prevent poor contact caused by loose wires.

- After the wiring is completed, check it carefully and then turn on the power supply for testing. If the light does not turn on or the switch does not work properly, cut off the power supply in time and check the wiring again.