Wire Short Circuit Problem 5, Wire Short Circuit Problem

Due to the harsh working conditions in the kitchen (dampness, oil smoke, etc.), coupled with the fact that the electricity load may be a bit large, the general rice cooker is hundreds or thousands of watts, and the electric load of the microwave oven is not small, etc., it is very easy to cause the socket or plug-in board to be poorly contacted, resulting in heating and burning, (some people's plug-in boards are very dirty, and the plugs of electrical appliances are also mottled with oil, which is very easy to cause poor contact, and it is best to clean up) Replacing the plug-in board or wiring board can solve this problem.

The short circuit in the plug-in board needs to be replaced, and if there is no power, check whether the shunt switch trips, if there is no shunt control switch, you need to find the burnout and reconnect.

It's your air switch that has jumped down, first turn on the socket to see, and fix it on the air opening and closing.

Either the neutral line is broken, or it is short-circuited, you check all the places with interfaces one by one to see if there is a problem with the socket or switch, or the wiring.

There is no problem in the area with electricity, and the zero line in the area without electricity is broken, the reason: local short circuit. The current situation, the zero line is broken, and it is not excluded that the area where there is no power is currently not short-circuited. Fault location: in between.

It may be that the power switch tripped after the socket burned out. Touch to see if it trips or the line burns out.

Check to see if there is a short circuit in an electrical appliance!

The zero line of the set of lines in my bedroom is broken.

Choose the right insulator.

The main causes of short circuits in household electricity are:

1. The insulation selection is not suitable, such as high voltage level and low insulation level;

2. The insulation layer loses its insulation ability due to high temperature, humidity and corrosion;

3. Tie the wire with metal wire or hang the insulation on the metal object;

4. The insulation layer is worn and aged over time;

5. The overvoltage of lightning strikes, the voltage increase of the line when there is no load, etc., causes the wire insulation layer to be hit and short-circuited.

A short circuit refers to the direct connection of the two ends of the wire without using electrical appliances, which will cause the wire to heat up, slight**, or even cause fire. There are many reasons for short circuits in daily life, such as wires that are often entangled, and aging insulating adhesives. There are two thin wires in the wire, a zero wire and a live wire, and each thin wire is composed of a lot of copper wires, and some wires such as plug-in electrical appliances are always wound or squeezed, etc., and over time the internal copper wire will be chaotic, and even penetrate the insulating paint and touch the copper wire inside a thin wire, and the current is connected with another wire to form a circuit before the electrical appliances are used, resulting in a short circuit.

What causes a short circuit in a cable?

1. Overvoltage occurs, breaking down the cable insulation;

2. Cracks and other problems in cable insulation, resulting in short circuits between internal cores;

3. The cable is overcurrent, the heat is too high, and the insulation is deformed, resulting in insulation breakdown.

Causes of short circuits in wires and solutions.

1. Overvoltage occurs, breaking down the cable insulation; 2. Cracks and other problems in cable insulation, resulting in short circuits between internal cores; 3. The cable is overcurrent, and the heat is too high, which causes the deformation of the internal insulation, resulting in insulation breakdown.

Why does a short circuit in a wire cause a disaster? What are the causes of short circuits in household electricity?

The reason for the short circuit of the wire is that the wire produces a large current and low voltage at the moment of the short circuit, and the excessive current will produce a high base after exceeding the rated value of the wire, and the instantaneous temperature can reach several thousand degrees, which is the arc of the wire.

The home circuit is mainly because the circuit is aging, damp, or gnawed off by mice, and the square number of wires and the selection of the main switch is incorrect, the square of the wire selection is small, the total switch is large, the current is too large, the switch does not drop, the temperature of the wire is too high, and the wire skin melts to produce a short circuit.

Wire**Why?

The leakage switch mainly plays the role of short circuit, overload and leakage protection.

1. When the wire is short-circuited, the instantaneous current in the circuit reaches the action current of the leakage switch, the leakage switch acts, disconnects the circuit, and the wire fire is obviously not caused by a short circuit, so the leakage switch does not trip.

2. When the circuit is overloaded, the wire has a large current through for a long time, and after reaching a certain time, the leakage switch will also trip, unless there is a situation, that is, the rated current of the leakage switch is greater than the carrying current of the wire, at this time, the leakage switch will not trip, but the wire will heat up, reach a certain temperature, and the wire will catch fire in this situation, which is the case.

Analyze the causes of fires caused by short circuits in electrical wiring.

It's like an examiner asking a candidate, be polite when asking questions!

Short Circuit – Connects the positive and negative poles of the power supply directly. In practice, the insulation between the 2 wires is damaged, resulting in leakage, heat generation, and fire. Most of the users do not understand the professional knowledge of line load calculation, and there is no limit to loading many loads behind one power cable.

The load capacity of the line and the size of the power supply capacity, and the length of the line are greatly related. To cut a long story short, try to keep the length of the power cord to a minimum, and use as thick a wire as possible. Of course, it is not unlimited, I also learned from others, the single-phase circuit can carry a maximum load of 11kw, and the three-phase depends on the size of your transformer.

Short Circuit Cause:

1. Component damage:

Short circuits are often caused by damage to insulation or careless wiring. For example, equipment defects caused by aging equipment insulation materials, poor design, manufacturing, installation, maintenance, etc., develop into short circuits.

2. Influence of meteorological conditions:

For example, scintillation discharge caused by lightning strikes, overhead line disconnection due to wind damage, and power pole collapse caused by wire icing.

3. Man-made sabotage:

For example, the staff pulled the switch with load, did not rule out the grounding wire closing and power supply when overhauling the line or equipment, the misoperation of the operation personnel, and the stealing of the wire and the carbon fiber bullet used in the Kosovo war and the Iraq war in the United States.

4. Other reasons:

Trenching damages cables, birds and beasts kite jumps on current-carrying bare conductors, etc.