Cable parallel connection is a common wire connection method, which can improve the carrying capacity of the wire and ensure the safe and stable operation of the wire. When the cable is connected in parallel, attention should be paid to the matching of the cross-sectional area of the wire, the limitation of the number of combined groups, the method of wiring, the control of the distance between the wires and the fixing of the cables to avoid the occurrence of wire accidents. Let's take a look at the concept of cable parallel and the matters that need attention.

First, the concept of cable parallel

Cable parallel is a method of connecting multiple cables together to form a circuit. In the home, industry, business, medical and other fields, cable parallel is a common wire connection. By connecting the cables in parallel, the bearing capacity of the wires can be improved to ensure the safe and stable operation of the wires.

Second, cable parallel precautions

(1) Matching of the cross-sectional area of the wire When the cable is connected in parallel, the cable with the same cross-sectional area should be selected for connection. If cables with different cross-sectional areas are used in parallel, it may lead to uneven current distribution, resulting in serious consequences such as overheating, burning, and even fire. When the cable is connected in parallel, the number of parallel groups should be determined according to the rated current value of the cable and the load current value. In general, the number of cables in each group should not exceed 4, and the number of combined groups should not exceed 3 groups. If the number of parallel groups exceeds 3, it may lead to voltage reduction, wire overheating, short circuit and other problems.

(3) Wiring method When the cable is connected in parallel, the correct wiring method should be used. Generally speaking, the "twisted wire" method should be used for wiring, that is, the cable of the same phase is cross-twisted together, and the insulation tape or tube sleeve is wrapped.

(4) Control of wire spacing When the cable is connected in parallel, the distance between the wires should be controlled. In general, it should be ensured that the spacing between the wires is not less than half of the diameter of the wires, and that no wear and external damage occurs between the wires.

(5) Cable fixing When the cable is connected in parallel, the cable should be fixed. Generally speaking, the cable should be fixed on the fixed device by means of insulating brackets and fasteners, and ensure that the cable has a certain tension to avoid problems such as cable loosening, wear, and overhead.

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