The switchboard is suitable for civilian use or in places where non-professionals (layouts) can enter. The switchboard includes control equipment and signal equipment. The switchboard is used for AC, and its nominal voltage to ground does not exceed 300V. The output circuit contains short-circuit protection devices. When the total input load current does not exceed 250A, the rated current of each outgoing short-circuit protection device does not exceed 125A. The power distribution board is mainly composed of a housing, low-voltage components for control, measurement and protection, connecting wires (copper bars), insulation supports as insulating parts and brackets for mounting components, etc., which are generally used in residential buildings or households It is composed of shell, low-voltage components for control / protection, connecting wires (copper bars), insulating support parts and brackets as insulating parts. The names of distribution board products on the market mainly include (AC) distribution boxes, measurement boxes, (residential) watt-hour meter boxes, terminal distribution boxes, lighting distribution boxes, modular terminal combination appliances, household distribution boxes, etc. . The general requirements for selecting a switchboard are as follows: 1. Choose products with CCC mandatory certification marks and certificates of conformity; 2. Check the nameplate, select the product marked with the manufacturer or trademark and the rated value, and select the appropriate rated voltage and rated current distribution board according to the use requirements; 3. Open the protective cover, and select the opening for installing the low-voltage component on the operation panel. After the low-voltage component is installed, there can be no products with a gap greater than 2.5mm in width. 4. According to the needs of use, select the number of outlet circuits that meet the requirements of use, the number of phases of each outlet circuit and the appropriate rated current value of each outlet circuit. 5. Check the internal components and structure, select low-voltage components with CCC compulsory certification mark, internal wiring with red, yellow and green three-color marking phase, with protective conductor logo, such as yellow-green and ground marking products, power distribution to metal shell The ground point of the board and the shell are connected to the power distribution board of the PE row with yellow-green wires. Side View Camera,Rear View Camera,Camera Parking,Camera Reverse Shenzhen Sunveytech Co.,LTD , https://www.sunveytech.com