Without any experience as an electrician, there is a very high safety risk in repairing the wires by yourself. **It is strongly recommended to contact a licensed electrician as a matter of priority**. But if you have to deal with simple urgent issues (such as changing sockets or switches), please strictly follow the steps below to ensure safety.： --- ###**️️Absolutely prohibited operation** In the following cases, please power off immediately and contact a professional electrician： -Smell burnt, see smoke or sparks -Involving the main distribution box, household wires or high-power electrical appliances (such as air conditioners, water heaters) -Exposed, blackened, blown wires or circuits involving multiple rooms --- ###**Safe operation steps (only for simple questions)** #### **1. Completely cut off the power supply** -**Close the main gate**: Find the distribution box in your home (usually at the entrance or in the basement) and turn all air switches to the **“OFF”**state. -**Two-factor verification for power failure**: Test the line to be repaired with a non-contact electric pen (tester) to confirm that there is no current. -**Protective equipment**: Wear insulated gloves (rubber material) and goggles. #### **2. Only deal with simple issues** -**Replace socket/switch**： ① Remove the old panel and loosen the terminal blocks with a screwdriver. ②**Take pictures to record the original wiring position** (firewire, zero wire, ground wire). ③ Connect the new equipment as it is, make sure that the copper wire is not exposed, and tighten the screws. -**Replace the bulb/lamp holder**: Confirm that the rated power of the lamp holder matches the bulb to avoid overheating. #### **3. High-risk behavior that is strictly prohibited from operation** -Do not touch the main line or ground cable in the distribution box. - Do not increase the socket or extend the line without authorization (it may cause overload). -Avoid using tape to wrap around damaged wires, and the entire section of wires must be replaced. #### **4. Restore power supply and test** -Keep the electrical appliances turned off first, and only open the main gate. -Use a multimeter to test whether the voltage is stable (normal is 220-240V, depending on the region). - Test electrical appliances step by step, if tripped, immediately power off and investigate. --- ###**Emergency tools that must be prepared** | Tools | Uses | |------|------| | Non-contact tester / Confirm whether the line is live | /Insulated screwdriver (with rubber handle) /Prevent electric shock | |Electrical tape (only for temporary use) / insulation protection | | Flashlight | Lighting after power failure | --- ###**Key safety principles** 1. **"Power failure first"**: Even if there is a sudden call during operation, the insulated gloves cannot fully protect the high-voltage shock. 2. **“Only repair one place at a time”**: Avoid confusion caused by dealing with multiple failure points at the same time. 3. **"Experience is irreplaceable”**: More than 80% of household fires are caused by DIY circuit errors, and the training cost of professional electricians is much lower than the cost of accidents. --- **Final advice**: There is no trivial matter with electricity. The safety of your life and family is much higher than the cost saved. If you have 1% doubts about the steps, please stop immediately and call the electrician.