High-quality switches generally use silver-cadmium contacts

The socket should have good contact with the plug, and should not be loose and extremely difficult to insert. When choosing, socket is not recommended to buy universal socket, should be based on their own use, according to the need to buy. The number of sockets, should be controlled within six, in order to use electricity safety. For the family dormitory and other places to use high-power electrical appliances mobile plug board, should be purchased separately, the socket should not be more than three.

Switches and sockets generally have a bracket structure at the bottom to increase its compression resistance. There are two types of brackets: steel and PC, which are insulated but have a better resistance to compression than steel brackets. So nowadays, there are two-layer and three-layer bracket structures, combining steel frame and PC. In the two-layer structure, the steel frame is directly used as the base frame, although there is paint on the surface, but it is easy to rust after a long time once it is peeled off, and there is a potential safety hazard. Three-layer structure, the PC as a base frame, the steel frame wrapped up, can effectively prevent the steel frame and wire contact, insulation effect is better.

Many of the connecting wires in the finished mobile plug-in panels are substandard. In the purchase of switches and sockets, you can bend the wire as much as possible, if the wire insulation is thick enough, high enough hardness, the greater the curvature of the bend will be. You can also use the method of touch, qualified line, roundness will be full, pinch up more porcelain.

When we press the switch, we can all hear the sound, which is produced by the contacts, which are two metal pieces or metal balls to produce the sound. If the contact is not safe enough, it is easy to produce arc, causing the switch short circuit and danger. High-quality switches generally use silver-cadmium contacts, can play a momentary overcurrent function, the ability to inhibit the arc is very strong. The poor-quality switch, the use of copper or tin silver-plated contacts, cutting corners, there is a high risk of safety. Pay attention to this detail when selecting.

The location of the outlet on the side of the sofa, taking into account the size of the sofa. Many people's homes, although the sofa wall has a socket, but are blocked by the sofa, forced to use a plug board dragged out to use, so that a lot of electrical appliances will be connected to a plug board, but also a security risk. In the purchase should weigh a single switch socket, if the alloy or thin copper sheet, feel lighter, while the quality is difficult.