How much do you know about household electricity?

1. Why should the lighting switch be connected to the fire line?
If the lighting switch is installed on the zero line, although the light is not turned off when the light is off, the phase line of the light head is still turned on, and people think that the light is not bright, it is mistakenly considered to be in a power-off state. In fact, the ground voltage at each point on the luminaire is still a dangerous voltage of 220 volts. If people touch these actually charged parts when the light is off, it will cause an electric shock. Therefore, the switches of various lighting switches or single-phase small-capacity electrical equipment can only be secured if they are connected in series on the fire line.

2. How to install a single-phase three-hole socket? why?
Generally, single-phase electrical equipment, especially mobile electrical equipment, should use a three-pin plug and a three-hole socket. There is a special protective zero (ground) jack on the three-hole socket. When using zero-connection protection, it is often only directly connected to the hole terminal in the socket bottom and the zero wire that is introduced into the socket. Extremely dangerous. Because if the neutral line of the power supply is disconnected, or the fire (phase) line and the neutral line of the power supply are reversed, the metal part such as the outer casing will also carry the same voltage as the power supply, which will result in electric shock.
Therefore, the dedicated grounding jack for wiring should be connected to a dedicated protective grounding wire. When using zero-connection protection, the zero line should be specifically drawn from the power supply terminal, and should not be used near the neutral line of the socket.

3. Why is it not strictly immersed in the wall directly?
(1) After long-term use of plastic insulated wires, the plastic will age and crack, and the insulation level will be greatly reduced. When the line is short-time overload or short-circuit, it is easier to accelerate the insulation damage.
(2) Once the wall is wet, it will cause large-area leakage and endanger personal safety.
(3) The plastic insulated wire is directly buried in the dark, which is not conducive to line maintenance and maintenance.

4. Why use a leakage protector?
Leakage protector, also known as leakage protection switch, is a new type of electrical safety device whose main uses are:
(1) Prevent electric shock accidents caused by electric equipment and electrical line leakage.
(2) Prevent single-phase electric shock accidents during power consumption.
(3) Cut off the single-phase ground fault in the operation of electrical equipment in time to prevent electrical fire accidents caused by leakage.
(4) With the improvement of people's living standards, the number of household appliances is increasing. In the process of using electricity, due to defects in electrical equipment, improper use and unfavorable safety technical measures, personal electric shock and fire accidents give life to the people. And the property has brought undue losses, and the appearance of leakage protectors provides reliable and effective technical means for preventing the occurrence of various accidents, cutting off the power supply in time, protecting equipment and personal safety.

1. Why should the lighting switch be connected to the fire line? If the lighting switch is installed on the zero line, although the light is not turned off when the light is off, the phase line of the light head is still turned on, and people think that the light is not bright, it is mistakenly considered to be in a power-off state. In fact, the ground voltage at each point on the luminaire is still a dangerous voltage of 220 volts. If people touch these actually charged parts when the light is off, it will cause an electric shock. Therefore, the switches of various lighting switches or single-phase small-capacity electrical equipment can only be secured if they are connected in series on the fire line.

3. Why is it not strictly immersed in the wall directly?
(1) After long-term use of plastic insulated wires, the plastic will age and crack, and the insulation level will be greatly reduced. When the line is short-time overload or short-circuit, it is easier to accelerate the insulation damage.
(2) Once the wall is wet, it will cause large-area leakage and endanger personal safety.
(3) Plastic insulated wires are directly buried in the dark, which is not conducive to line maintenance and maintenance.

4. Why use a leakage protector?
Leakage protector, also known as leakage protection switch, is a new type of electrical safety device whose main uses are:
(1) Prevent electric shock accidents caused by electrical equipment and electrical line leakage.
(2) Prevent single-phase electric shock accidents during power usage.
(3) Shut off the single-phase ground fault in the operation of electrical equipment in time to prevent electrical fire accidents caused by electric leakage.
(4) With the improvement of people's living standards, the number of household appliances is increasing. In the process of using electricity, personal electric shocks and fire accidents caused by defects in electrical equipment itself, improper use and safety technical measures, give people's lives. And the property has brought undue losses, and the appearance of leakage protectors provides reliable and effective technical means for preventing the occurrence of various accidents, cutting off the power supply in time, protecting equipment and personal safety.