How to wire the three-hole socket? What are the points of attention?

The three-hole socket is widely used in daily life, and the three-hole socket is safer than the two-hole socket. Because the three-hole socket has one more grounding jack than the two-hole socket, the ground wire plays a role in safety protection. I don't know if you have found that all the large electrical connections are three-hole sockets, which can effectively protect the electrical appliances. However, in daily life, many people often only take the line of two holes. This is very dangerous. Next, I will introduce you to the detailed connection of the three-hole socket.

How to wire the three-hole socket? What are the precautions for the three-hole socket?

(1) In the power supply system where the neutral point is not grounded, the protection grounding must be carried out. In the system where the neutral point is grounded, the equipment casing can be connected to zero protection. But these two protection methods are not allowed to be shared in a low-voltage power grid at the same time.

(2) The use of protection and zeroing has the following characteristics: the use of protective zero-connected electrical equipment, such as insulation damage, the resulting "phase" to "zero" short-circuit current is much larger than the protective grounding method, so it can In a short period of time, the fuse or the automatic air switch is activated to cut off the power supply quickly; since the neutral line and the phase line are generally laid in parallel, it is safe and convenient to use the protection zero.

(3) When using a single-phase socket for protection and zero connection, the wiring must be correct.

1. Ground, neutral and live: The earth is a good conductor, and the ground is connected to the earth through a deep buried electrode. The transmission of utility power is in three-phase mode and has a neutral line. When the three-phase balance is balanced, the current of the neutral line is zero, commonly known as "zero line". Another characteristic of the neutral line is that it is matched with the ground line in the system. The electrical input is shorted and the voltage difference is close to zero. The three phase lines of the three-phase power and the zero line have 220 voltages, which will cause electric shock to people, commonly known as "fire line". There are strict standards for the installation and arrangement of electrical circuits. In practice, the ground wires are correctly assembled according to the standards.

2. The center line is the line drawn from the neutral point of the generator or power transformer. If it is not grounded, it is called the center line. If it is well connected to the ground (the ground is zero potential), the center line at this time is also called the neutral line. It is. Although the neutral and ground wires of civil power are drawn from the same point, their respective functions are separate and cannot be mixed.

For example, the neutral line and the live line are electrical circuit lines, which are edged from the outer casing of the electrical appliance. The current flowing in the line is the same size, so the wire diameter is the same thickness. The ground wire is connected with the outer casing of the electric appliance. When the electrical appliance is faulty, current flows, and generally there is no current, so the wire diameter is much finer. The neutral line and the live line are the circuits that use electricity, so the zero line must not be connected to the outer casing, which can cause electric shock.

The above is the introduction of the three-hole socket introduced by Xiaobian. If you have a three-hole socket in your home, you must install the master to correctly access the three-hole socket. This will reduce many safety hazards. The three-hole socket actually plays a protective role. Summer is a rainy season, so thunder is a common thing. If you do not connect the three-hole socket, you may damage the appliance. The three-hole socket is connected to the ground, which can effectively avoid this kind of thing.