Installation and wiring of distribution cabinet discussion on wire connection of distribution cabinet

Power operators know that the connection of distribution cabinet wires accounts for a large proportion in the work of electricians, but what precautions are there when connecting? Do you know? Let's talk about the installation and wiring of distribution cabinet below.

1. First, it must be ensured that the cross section of the conductor can carry the normal working current, which is the same as the loss and heat of the components in the cabinet, so the temperature should be higher than the external temperature of the enclosure. Cabinet. Under special conditions, the wire connection of control circuit shall also consider its tensile strength requirements.

Distribution cabinet installation wiring

2. There are buttons and other components on the door of the control cabinet, so it is very necessary to place spare wires on the door. Since it is very possible to modify and add the circuit on site to adapt to the actual working conditions, and the harness on the cabinet door is usually protected by winding pipe, it is particularly necessary to add wires for the components on the cabinet door on site. Trouble. Therefore, the color of the spare line is also very conspicuous yellow, so the modified and added circuits in the cabinet will be clear at a glance.

3. Special copper connectors and matching standard crimping tools must be used for terminal treatment of control circuit. It is found in the manufacturer that the treatment of the end of its control circuit uses the blade of diagonal pliers for shear crimping, or uses the stressed surface of other pliers for flat extrusion crimping. However, the biggest problem with these methods is that the crimping quality of each terminal connector will vary greatly with the grip strength of the wiring personnel and the fatigue degree of the wrists of the wiring personnel. Too much grip will cause the copper connector and copper wire to be cut. If the grip strength is low, it can only be guaranteed that the copper connector will not be temporarily separated from the copper wire, but these problems will not be found in the general inspection, which will bring more "test problems" and "maintenance" to the inherent complex areas. Naturally, we can't guarantee product quality.