The vertical distance between the bottom surface of the fixed distribution box and switch box and the ground shall be greater than 1. The main distribution box shall be located in the area close to the power supply; the distribution box shall be installed in the area with relatively concentrated electrical equipment or load; the distance between the distribution box and the switch box shall not exceed 30m; the switch box shall be. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. In industrial settings, you may need to adjust the height depending on the space and equipment around it.
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