The wire is aging and short circuited, and the fire occurs, and a few puffs of smoke and dust are in

It doesn't matter, in recent days, I will spit black phlegm, it is the body's automatic sewage system that works, don't worry, it's okay to just suck a few mouthfuls, it's not so delicate

It's okay, only long-term inhalation of smoke and dust can pose a threat to life.

1. In the case that the power cannot be cut off, dry powder fire extinguisher, 1211 fire extinguisher, carbon dioxide fire extinguisher or sand can be used to extinguish the fire.

2. In the case of power failure, water can be used to extinguish the fire.

3. The circuit fire will generally be relatively fast, and when extinguishing the fire, it is necessary to pay attention to observe that the entire circuit has the possibility of burning, and do not only care about the part that can be seen.

Disconnect the power supply.

If the fire is very large, report it immediately.

Commonly used fire extinguishing equipment: sand and dry powder fire extinguishers.

The power is cut off first, and then the fire extinguisher is used with sand, dry powder, or carbon dioxide to save the fire.

In order to prevent electric shock, the power supply should be cut off before extinguishing the fire, and then the fire should be extinguished.

Set up a few more pumps to sprinkle water into the air, the contact area between water and air increases, and the oxygen content dissolved in water increases, so fill in: set up a few more pumps to sprinkle water into the air

1. It can be identified.

2. A short circuit is a short circuit due to its own reasons, which is generally the cause of disasters; The secondary short circuit generally refers to a short circuit after being burned out in a fire, and is not the cause of the fire.

3. The fire department can send it to an institution with appraisal ability such as Tianjin Fire Research Institute to identify, and you can also take the initiative to apply for them to do so.

1. This conclusion is correct.

2. Because after a short circuit, the insurance may not be disconnected (a problem that is often encountered), and a second short circuit occurs after the fire.

3. The secondary molten bead refers to the characteristics of the second smile difference and the short touch of the round leather road, and there is a secondary molten bead, which means that there is a secondary short circuit.

Answer: When the wire is short-circuited, the total resistance of the circuit is very small, the current is very large, it can be seen from Joule's law of difference, a lot of heat will be generated in a short period of time, so that the temperature of the wire rises sharply, igniting the nearby flammable materials and attracting envy

Answer: When the wire is short-circuited, the total resistance of the circuit is very small, the current is very large, it can be seen from Joule's law, a lot of heat will be generated in a short time, so that the temperature of the wire rises sharply, igniting the nearby flammable materials and causing disasters