In the event of an electrical fire, the power supply should be cut off immediately, and what to use

In the event of an electrical fire, the power supply should be cut off immediately, and dry powder and carbon dioxide can be used.

Carbon tetrachloride and other fire extinguishing agents extinguish the fire. When a fire breaks out in power lines and electrical equipment, resulting in combustibles nearby, the method of power outage should generally be adopted, that is, according to the different conditions of the fire scene, the power supply should be cut off in time, and then the fire should be extinguished.

Be careful not to extinguish the fire with water first, as appliances are generally electrified, and water splashed on them conducts electricity. Extinguishing a fire with water may cause an electric shock, but it will not achieve the purpose of extinguishing the fire, and the damage will be even worse. In the event of an electrical fire, water can only be used to extinguish the fire if the power supply is cut off.

When you are unsure whether to cut off the power supply, you can use dry powder, carbon dioxide, carbon tetrachloride and other fire extinguishing agents to extinguish the fire.

In the event of a fire in electrical equipment, the available carbon dioxide should be cut off immediately.

Dry powder and other fire extinguishers.

Fire suppression. When an electrical fire occurs, the fire will spread rapidly along the electrical line, which is mainly due to the fact that the electrical equipment, facilities, etc. are in operation, the temperature is high and the operation is live, which accelerates the spread of the electrical fire.

Electrical fires are not easy to detect, first of all, in order to ensure the overall aesthetics of the building, most of the electrical equipment, facilities, and wiring in the building exist in a hidden way, and the possibility of being detected if the electrical leakage and short circuit is reduced. In addition, leakage of electricity from electrical equipment often occurs inside the equipment, so it is not easy to detect.

In the event of a fire in electrical equipment, the power supply should be cut off immediately and a fire extinguisher such as carbon dioxide and dry powder can be used to extinguish the fire. That's right.

Carbon dioxide extinguishing agents can be used for liquid or fusible solid matter fires, gas fires, and live fires.

1. Electrical fires are not easy to detect: First, in order to ensure the overall aesthetics of the building, most of the electrical equipment, facilities, and lines in the building exist in a hidden way, and the possibility of being detected if the electrical leakage and short circuit is reduced; In addition, leakage of electricity from electrical equipment often occurs inside the equipment, so it is not easy to detect.

2. The speed of electrical fire spread is very fast: when an electrical fire occurs, the fire will spread rapidly along the electrical line, which is mainly due to the fact that the electrical equipment, facilities, etc. are in operation, the temperature itself is high and it is live operation, which makes the electrical fire spread faster.

3. Electrical fire extinguishing is relatively complex: if there is a fire in electrical facilities and equipment, it is difficult to quickly judge the best point in a short time, and the electrical fire cannot be extinguished with water, and the fire is extinguished by cutting off the power supply, and it is also necessary to extinguish the fire according to the fire and related operation requirements, in short, the fire extinguishing is relatively complex.

The first thing to do after an electrical fire is the first thing to do is to cut off the power supply.

In the event of an electrical fire indoors, the main switch should be pulled off as soon as possible, and fire extinguishing equipment should be used to extinguish it in time. When the outdoor high-voltage transmission line is opened, it is necessary to call the substation or power supply station in time to cut off the power supply.

Matters that should be paid attention to when power is off and fire extinguishing:

1. The position of cutting off the power supply should be selected appropriately to prevent the power supply from affecting the rescue work.

2. The position of cutting off the power supply should be near the support in the direction of the power supply to prevent the wire from falling on the ground after cutting, causing a short circuit in the grounding or the risk of electric shock.

3. When cutting the power supply, the live wire and the neutral wire should be cut at different parts to prevent the occurrence of line sections.

4. When pulling off the knife switch to cut off the power supply, an insulated operating rod or insulated rubber gloves should be used. In the event of a fire in the electrical appliances in the distribution room, the dielectric strength of the knife switch will be reduced due to smoke, and the risk of electric shock will occur when operating with bare hands.

5. When cutting off the load equipment such as the motor and the magnetic switch starting, the motor should be powered off with a button first, and then pull off the brake knife to prevent the arc from hurting people due to the load pulling.

In the event of a fire in electrical equipment, ordinary foam fire extinguishers cannot be used to extinguish the fire without power failure.

Ordinary foam fire extinguishers should not be used to extinguish fires with live equipment, otherwise they will threaten personal safety.

The foam fire extinguisher is a chemical reaction that mixes the acidic solution and the alkaline solution in the cylinder, and presses the generated foam out of the nozzle and sprays it out to extinguish the fire. In addition to being used to extinguish general solid matter fires, it can also extinguish combustible liquid fires such as oil, but it cannot extinguish fires caused by live equipment (except for the use of special nozzles) and organic solvents such as alcohols, ketones, esters, ethers and other alcohols (except for anti-solvent foam fire extinguishing agents).

In the event of an electrical fire, the first measure that should be taken is to cut off the power supply. If an electrical fire occurs indoors, the main switch should be pulled off as soon as possible, and fire extinguishing equipment should be used to extinguish it in time. When the outdoor high-voltage transmission line is **, it is necessary to call the substation or power supply station in time to cut off the power supply.

What to do if an electrical fire occurs

1. Cut off the power supply immediately;

2. Use a fire extinguisher to extinguish the fire, but use blankets, quilts and other items to extinguish the flames when the TV and computer catch fire;

3. When the power supply cannot be cut off, the fire should be extinguished with a non-conductive fire extinguishing agent, and do not use water and foam fire extinguishing agent;

4. Dial "110" or "119" to call the police**.

How to prevent electrical fires

1) Do not overload electricity. The sum of the power of the electrical equipment used or the total power of the electrical equipment used at the same time shall not exceed the allowable power of the power supply.

2) Select appropriate power leads, connecting devices and fuses. Appropriate connecting wires, plugs, sockets and other connecting devices and fuses should be selected according to the rated current of electrical equipment. For high-power electrical equipment, it should also be supplied separately.

3) Prevent short circuit. Do not make any two live wires of the power supply or the live wire and the neutral wire come together; Do not bring together any excess wires from the power plug or socket at the studs that connect the power cord.

4) Strict fire prevention management. In the use of electricity in places that are prone to fire, fire prevention management must be strengthened. If there can be no flammable materials around the electric welding or other electricity that will produce arcs and electric sparks, there should be no flammable materials around, and a special person should be responsible for taking strict fire prevention measures.

In flammable and explosive occasions, it is strictly forbidden to have open flames, and the electrical equipment used must be motors and electrical appliances with explosion-proof performance, and should be maintained and managed by professionals.

In the event of a fire in electrical equipment, the power should be turned off immediately and a carbon dioxide, carbon tetrachloride or dry chemical fire extinguisher should be used to extinguish the fire. It is also possible to extinguish the fire with sand, dry dirt, etc. Remember, do not use water to extinguish fires, because water conducts electricity and can easily be electrocuted and injure people.

Once the flames are found to have jumped to the ceiling and the fire is difficult to control, the people trapped in it should be calm, stop fighting, evacuate quickly and evacuate the danger, and immediately report the fire.

Dry chemical fire extinguishers, because dry powder is not a conductive substance, can be used to extinguish fires with live devices. Of course, when an electrical device catches fire during operation, the power should be turned off before extinguishing the fire. If the power cannot be cut off quickly, carbon dioxide, carbon tetrachloride, 1211 fire extinguishers and other fire extinguishers can be used, and a certain safety distance should be kept when using.

Causes of electrical equipment fires.

1. Line aging:

The reason why electrical equipment will catch fire, the primary reason is the aging of the line, such as: the insulation layer of the line is degraded, the copper and aluminum wire connection is not in place and the lack of special personnel to check and maintain, once there is leakage, the electric spark is very likely to cause the insulation layer to ignite and cause disaster.

2. Short circuit of wires:

Secondly, short circuits are also an important problem that causes electrical fires. When a short circuit occurs, the current can reach 10 times the normal number in a brake, causing the line temperature to rise, and when the insulation layer combustion temperature is met, the electrical fire is triggered.

3. The electric switch is not closed

In daily life, when we use lamps and electric heating devices, we must separate flammable objects, if there is no one at home when the electric switch is not turned off, once the heat comes into contact with flammable and explosive products, it is very likely to cause fire hazards.

How to deal with the fire of electrical equipment.

1) Turn off the power of the relevant device immediately, and then extinguish the fire again.

2) If the ground insulating oil catches fire, it must be extinguished with dry sand.

3) For live electrical installations, motors, etc., dry type, 1211 and other fire extinguishers should be used to extinguish the fire.

In the event of a fire in electrical equipment, it should be extinguished from all aspects (quickly cut off the power), and then use (carbon dioxide or dry powder fire extinguisher) to extinguish the fire, and remember not to use water to prevent leakage accidents.

In the event of a fire in electrical equipment, use (dry chemical fire extinguisher or carbon dioxide fire extinguisher) to extinguish the fire, not (acid, alkali or foam) fire extinguisher.

In the event of a fire in electrical equipment, the fire should be extinguished immediately (cut off the power supply) and extinguished with a (sand) or (dry powder) fire extinguisher.

Power off, dry chemical fire extinguisher or ammonium phosphate fire extinguisher extinguishing the fire.

The ammonium phosphate fire extinguisher on the first floor is a dry powder fire extinguisher.

Turn off the power switch, dry chemical fire extinguisher, carbon dioxide.