The application of wire connectors is very extensive. For example, the equipment and tools commonly used in daily life are elevators, electric water heaters, children's toys, artificial intelligence and other products. Not only cables, but also many engineering equipment have this kind of wire connector. With this kind of connector, accessories can be replaced at any time to increase the service life. In the future development, the wire connector is a very important connection device, which greatly facilitates the performance of the equipment and realizes multiple functions. From a global point of view, the share cannot be ignored. With so many application scenarios, should we pay attention to the security risks that exist while it is widely used?
Reasons for accidents at joints
The main cause of accidents is fire caused by short circuit, fever or electric spark.
It should be noted that the insulation layer of wires and wires, wires and switches, wires and electrical carriers, wires and shelters are peeled off at this part of the connection point, resulting in accidents caused by direct collision of two wires.
Fever due to excessive contact resistance. So, what are the reasons for the excessive contact resistance of the connector?
(1) If the connecting wire is not connected according to strict regulations, the connection of the connector will not be firm and easy to loosen, which will generate electric sparks and cause serious fire accidents.
(2) Wires, switches, and electrical appliances are connected by wire posts. Because of sloppy construction, no washers are added to the connection posts, and the nuts are not tightened. This will also increase the contact resistance, cause the conductor to melt, and the molten beads fall to flammable. On the object, it caused a fire accident.
(3) The copper wire and the aluminum wire are not connected according to the prescribed implementation method, which poses a safety hazard.
(4) The core of the wire is not twisted well, and part of the filaments (cores) warp outwards, which will form a short circuit after each other, which will cause a short circuit after power on, causing a fire accident.
(5) The phase wires are not staggered, the wire joints are broken, and the joints are short-circuited between the phases, which may cause electric sparks and easily cause fire accidents. If the joint is opened for a long time and becomes loose, the conductor connection will be oxidized.
Measures to prevent accidents at the joints: Lower the joints of the wires as much as possible.
