The production and living need the help of electric energy, and the cable as the power transmission carrier cannot be ignored. When wire and cable manufacturers produce various types of cable power workers, how to determine the current carrying capacity of the cable when selecting cable lines? We introduce you to a mouthful.

       The wire and cable manufacturers calculate the current carrying capacity as follows: 2:5, multiply by IX, go up one minus one; 35 to 3.5, doubles to 5; the conditions are changed and converted, the high temperature is 10% off Copper upgrade; the number of pipes to be piped is two to three, and eighty-seven percent is full of current. The current carrying capacity in the wire and cable manufacturer's mouth is expressed by multiplying the cross section by a certain multiple, and the multiple decreases as the cross section increases.

       The first sentence means aluminum insulated wires of various cross-sections of 2.5 mm and below, and the current carrying capacity is approximately nine times the number of sections. The multiple of the current carrying capacity of the wire above 4 mm and the number of sections is arranged up the line number, and the multiple is reduced. The second sentence means that the current carrying capacity of the 35mm wire is 3.5 times the number of sections. From the wire of 50mm and above, the multiple relationship between the current carrying capacity and the number of sections is a group of every two wire numbers, multiple times. Decrease by 0.5. The third game means that if the aluminum core insulated wire is applied to an area where the ambient temperature is higher than 25 °C for a long time, the current carrying capacity of the wire can be calculated according to the above-mentioned mouth, and then 10% off; if a copper core insulated wire is used, The current carrying capacity should be slightly larger than the aluminum wire of the same specification. According to the above-mentioned port, the current carrying capacity of one wire number larger than the aluminum wire can be calculated. The fourth sentence is to say that when the pipe is laid with two, three and four cables, the current carrying capacity is 80%, 70% and 60% of the above-mentioned port current carrying capacity.