Check name plate, labelling, ID tags and warning signs correct to drawings / data sheets. Holding down arrangement correct and secure as per manufactures specification. Check earth. (1) Power distribution from the primary main distribution board (distribution cabinet) to secondary distribution boards can be branched; that is, one main distribution board may supply power via multiple branch circuits to several secondary distribution boards. It covers clear access and housekeeping, panel integrity and corrosion, proper mounting and canopy protection, junction box condition, covered switches and displays, and. (1) The power distribution system for construction shall be equipped with general distribution box, distribution box and switch box, which shall be set in a hierarchical manner according to the sequence of "general-off-on" and form a "three-level power distribution" mode. (2) The installation. Switch box shall be distributed by the final sub-distribution box. power distribution box. Safety control requirements for distribution box: 1.
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