The terminal is used to facilitate the connection of the wire. It is actually a piece of metal sealed in insulating plastic. There are holes at both ends to insert the wire. There are screws for fastening or loosening. For example, two wires, sometimes Need to connect, sometimes need to disconnect, then you can use the terminal to connect them, and can be disconnected at any time, without having to weld them or entangled together, it is very convenient and fast. And suitable for a large number of wire interconnections, there are special terminal blocks and terminal boxes in the power industry, all of which are terminals, single-layer, double-layer, current, voltage, ordinary, breakable and so on. A certain crimping area is to ensure reliable contact and to ensure that sufficient current can pass.