How to Prevent Electrical Fire Accidents? What to do after a fire

Hello! 1) Don't buy "three nos."

of counterfeit and shoddy household products.

2) When using household appliances, there should be a complete and reliable power cord plug. Grounding protection should be used for household appliances with metal shells.

3) Do not install switches and fuses on the ground and neutral lines.

It is forbidden to place the grounding wire.

It is connected to the water and gas pipes.

4) Do not touch the live equipment with wet hands, and do not wipe the live equipment with a damp cloth.

5) Don't connect the wires privately, and don't move the live equipment casually.

6) When inspecting and repairing household appliances, the power supply must be disconnected first.

7) When the power cord of household appliances is damaged, replace it immediately or wrap it with an insulating cloth.

8) When a fire occurs in a household appliance or wire, the power supply should be disconnected before extinguishing the fire.

In the event of a fire, whether it is caused by electrical or not, the first thing to do is to find a way to quickly cut off the power supply within the fire area. Because, if the fire is caused by the electrical aspect, the power supply is cut off, and the fire source of the fire is cut off; If the fire is not caused by electrical aspects, it will also burn the insulation of the wire, and if the power supply is not cut off, the burned wire will cause a short circuit in the wire, causing a wider range of wires to catch fire. In the event of an electrical fire, cover soil, sand or fire extinguishers should be used, but foam fire extinguishers should never be used.

Therefore, the fire extinguishing agent is electrically conductive.

If you have any questions, please feel free to ask.

Short circuits of wires, poor wire contact, overload of wires, and leakage may cause fires, and serious ones will really lead to the loss of both people and property. The use of flame-retardant and fire-resistant wires and cables can greatly reduce the occurrence of fire accidents. To buy fireproof wires, you still have to choose the high-end brand Trov, and take safety first.

Do not overload the electricity: the sum of the power of the electrical equipment used or the total power of the electrical equipment used at the same time should not exceed the allowable power of the power supply. Select the 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. <

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 cannot 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 touch together; Do not touch the excess wires at the studs connecting the power cord to the power plug or socket; Do not touch the live wire and the neutral wire at the same time when using the electric detector pen to check the electricity; Do not short-circuit electrical components, etc. in electrical equipment.

4. Strict fire prevention management: fire prevention management must be strengthened when electricity is used in situations that are easy to cause fires. 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.

Measures in the event of an electrical fire:

1. In the event of a fire, the power supply should be cut off first to avoid electric shock, and to avoid the expansion of short circuit between electrical equipment and lines.

2. Due to moisture and fumigation, the insulation capacity of the electrical equipment in the fire area is reduced, and the insulation tools should be used to accompany the switch when the switch is opened.

3. When cutting wires, different lines should be cut at different parts to avoid two-phase or three-phase short circuits, and overhead lines should be disconnected near the supporting objects.

Fourth, when the wire is grounded, a warning area should be set up to prevent personnel from entering and being electrocuted.

5. Choose non-conductive fire extinguishers such as carbon dioxide, carbon tetrachloride, dry powder fire extinguishers, etc.

Expand the Zen mess vertical data:

Electrical fires mainly include the following four aspects:

1. Leakage fire.

The so-called leakage means that the insulation ability of the wire or the insulation ability of the bracket material is reduced in a certain place of the line for some reason (natural or man-made reasons, such as wind and rain, humidity, high temperature, pressure, scratching, friction, corrosion, etc.).

Leakage is caused by the passage of a portion of current between wires (through damaged insulation, brackets, etc.) and between wires and the ground (wires passing through steel bars, tinplate sheets, etc. of cement walls).

2. Short-circuit fire.

After the insulator of the bare wire or insulated wire in the electrical circuit is damaged, the live wire and the neutral wire, or the live wire and the ground wire (including the grounding subordinate to the earth) meet together at a certain point, causing a sudden large increase in the current The phenomenon is called short circuit, commonly known as touching the wire, mixing the wire or connecting the electricity.

3. Overload fire.

The so-called overload means that when the amount of current passing through the wire exceeds the safe current carrying capacity, the temperature of the wire continues to rise, which is called wire overload.

When the conductor is overloaded, the aging and deterioration of the conductor insulation layer is accelerated. When severely overloaded, the temperature of the wire will continue to rise, and even cause the insulation of the wire to burn, and can ignite the combustibles near the wire, thus causing a fire.

Fourth, the contact resistance is too large fire.

On the electrical circuit with a large current passing, if the contact resistance is too large in a certain place, it will generate great heat in the local range of the contact resistance is too large, so that the metal will be discolored or even melted, causing the insulation layer of the wire to burn, and igniting the nearby combustibles or dust, fibers, etc. accumulated on the wire, thus causing a fire.

Encyclopedia - Electrical fires.

The first is the direction of refuge and escape; the second is whether the safety door and ladder position are closed and locked; The third is to check the location of fire hydrants, slow descent machines, rescue bags and other fire extinguishing and evacuation equipment.

Stairs, passages, safety exits, etc. are the most important escape routes in the event of a fire, and should be guaranteed to be unobstructed, and sundries must not be stacked or locked, so that they can pass safely and quickly in case of emergency.

When a fire breaks out, if it is found that the fire is not large and has not yet caused a great threat to people, when there are enough fire-fighting equipment around, such as fire extinguishers, fire hydrants, etc., the small fire should be controlled and extinguished; Don't be shocked by this annihilation and scream in a panic, ignore the small fire and cause a catastrophe.

Escape methods

In case of fire, correct and effective methods should be taken to save yourself and escape to reduce personal losses

1. Once you are threatened by fire, do not panic, calmly determine your location, judge the fire according to the surrounding smoke, fire, temperature and other analysis, and do not act blindly.

2. If you are in a bungalow, if the fire around the door is not big, you should leave the field quickly. On the contrary, you must choose another exit to get out (such as jumping out of the window), or take protective measures (such as drenching clothes with water, wrapping your head and upper body with a warm and damp quilt, etc.) before leaving the venue.

3. If you are in a building, do not blindly open the doors and windows when you find a fire, otherwise it may lead to a fire.

4. If you are in a building, don't run blindly, let alone jump off the building to escape, which will cause undue **. You can hide in the living room or on the balcony. Close the doors and windows, cut off the fire path, and wait for rescue.

If conditions permit, you can continue to pour water on doors and windows to cool down to delay the spread of fire.

5. In the building that has been altered and stared at the fire, the elevator cannot be used for escape, and the stairs should be taken through the fire escape to escape. Because after a fire, the elevator shaft often becomes a passage for fireworks. And the elevator can break down at any time.