How far should the third- and second-level distribution boxes be
Generally, the first-level distribution box is required to be installed in a place with a relatively high terrain, dry and ventilated, and the second-level and third-level distribution boxes should be as close as possible to the electrical equipment. Generally, first level distribution does not allow direct use of electrical equipment, and second level distribution will be by power equipment because it is three-phase electricity, while third level distribution is mains electricity (220V). Let's make an example for clarity: A newly constructed residential area introduces a 10kV power line to a substation. 5M above the ground The main switch is 60A Lighting switch 16A two-phase leakage switch Air conditioning 1. Electrical distribution is the final stage in the delivery of electricity to end users.
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