The mobile connecting wires of electrical appliances are the main cause of electrical accidents, and serious installation errors have repeatedly led to fatal accidents. It is wrong to talk about saving here. Never repair or repair moving connecting wires. For example, wrapping with insulating tape, in case of poor insulation or exposed parts, the entire section of the wire must be updated. The pull pin on the plug pulled out of the socket must never be charged.

This mistake is often made when extending cables. The mobile connection wires (electrical connection wires) and connection sockets (connection cables) with electrical sockets must contain protective wires under any circumstances. One end of them is equipped with a safety plug with a protective grounding contact, and the other end is an installation. There are electrical sockets with grounded sliding springs or connection sockets with protective contacts.

Here may wish to mention the installation equipment again, the correct name is electrical sockets, not "electrical plugs." The electrical plug is a part of the electrical plug-in device. It is usually protected by an overflow shell and fixed on the electrical appliance to be connected. For electrical sockets, it should be noted that electric heaters are only allowed to use electric heater poke sockets, which have high temperature resistant ceramic heads.

The electrical socket is an obsolete structural type, and its obvious disadvantage is that it is easy to touch the grounding sliding spring. In this way, when using sharp tools (such as knives and forks) to remove contaminants embedded in the sheath, if you forget to pull out the plug, the current will flow through the human body and flow to the touched ground sliding spring, resulting in Serious accident. Therefore, international standards stipulate a series of improvement and solution measures, but the implementation is very weak.

The connecting wires must be selected according to the mechanical, chemical, atmospheric, thermal and electrical loads that may appear on the electrical appliances. The structure, use and application examples of various wires are summarized.

Article from: http://www.elejintao.com/newsd-nid-26.html