When choosing a waterproof junction box, we need to know three basic elements.
First, we can calculate the number of A terminals according to the power/voltage=current.
Second: Do we need to open holes for incoming and outgoing line processing. If necessary, we need to know how many groups of wires are going in and how many groups of wires are going out. For example, if we need a junction box with one input and four outputs, and our wires are 3 * 2.5 square meters, then we need 12 bit terminals for standard configuration, and the specific algorithm (four output * 3 core wires=12).
Third, the most important thing is the diameter of the incoming and outgoing lines, because waterproof joints should be equipped according to the diameter of the lines.
Others should be judged according to their own use environment, such as the use scene, waterproof level, and box size, which need to be selected by themselves.
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