A switch is arranged between the weatherproof socket resistor and the electromagnetic switch, the fuse and the electromagnetic switch are connected with a power line, the power line is provided with a normally open switch of the electromagnetic switch, and the normally open switch of the electromagnetic switch is connected with the jack. The power socket has one or more seats into which circuit wiring can be inserted, through which various wiring can be inserted to facilitate connection with other circuits. NEMA wiring device must be as small as possible in order to realize frequent commutation, but also to realize braking during commutation and acceleration after commutation. Therefore, it is necessary to adopt commutation device quickly and braking device effectively.The first point is that some industrial plugs and sockets used outdoors must use some immersion-proof industrial plugs and sockets, and when using these industrial plugs and sockets, we should also pay attention to the need to cover the buckle waterproof cover of the industrial plugs and sockets tightly after plugging and unplugging, so as to ensure that the inside of the industrial plugs and sockets is not interfered by the external environment, ensure that the whole industrial plugs and sockets have good waterproof performance, and can work stably for a long time in some outdoor environments that are easy to be rained.The second point is that all industrial plugs and sockets have anti-drop structures in the design process, so when using industrial plugs and sockets, the anti-drop structures on industrial plugs and sockets should be removed first, that is, before using industrial plugs, the plug hands should be grasped first, and then the plugs should be released or the covers should be opened to allow the industrial plugs to pull out the plugs and sockets. Otherwise, directly pulling out the plugs will lead to the subsequent abnormal operation of the industrial plugs and seriously affect the subsequent use of the whole industrial plugs.The third point is that when industrial plugs and sockets may have interlocking function, they can only be connected when the power is off, and when the power is on, they will not operate normally. Therefore, we must pay attention when using this kind of industrial plugs and sockets. Please remember not to use brute force to pull out the plugs when the power is on. This is very dangerous, which will directly lead to the failure of the interlock device of the industrial plug, even in the case of electric shock.The fourth point is that some industrial plugs and sockets without protective covers should be properly protected during daily use and storage. Although industrial plugs and sockets are partially protected by the outer shell, they cannot be stored or used for a long time in dusty environment. Some exposed parts of industrial plugs and sockets are easily interfered by environment and other factors, so when storing and using industrial plugs and sockets, they need to be used in some safe and pollution-free environments.