Why Do Cable Terminals Need To Be Marked With Wires?

cable lugs In the on-site construction and commissioning of complex electrical systems, it is often necessary to connect multiple wires, and the function, location and direction of different wires must be clearly shown. Workers typically use labels, number tubes, marking strips, etc. on terminal blocks or DIN rails to mark the location of wires and their wire lugs designation, which helps in understanding the wiring layout and retrieving information on-site.

By using a standardized marking scheme, the spatial location of electrical lugs can be mapped one-to-one with the terminal points in the electrical drawings. During equipment assembly or maintenance, technicians can quickly locate the corresponding connections based on these markings, aiding in the rapid determination of the destination and function of each wire. This practice is commonly seen in the terminal configuration of automated control cabinets, power distribution boards, and power distribution systems.