What are the Uses of Primary, Secondary and Tertiary
1. Primary distribution box Construction power distribution cabinet for construction site construction power use, is specially designed for the
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Primary distribution box: three-phase power supply, ground wire and zero wire are introduced from the transformer. Let's make an example for clarity: A newly constructed residential area introduces a 10kV power line to a substation. 4kV), power distribution is achieved through three levels of distribution boxes: the main distribution board, secondary.
