Temporary electrical wiring for construction sites
All 120-volt, single-phase, 15- and 20-ampere recepta-cles shall be of the grounding type and their contacts shall be grounded by connection to the equipment grounding conductor of the circuit
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Distribution box and switch box shall be made of iron plate or high-quality insulating material, and the thickness of iron plate shall be greater than 1.5mm The electrical equipment in the distribution box
Temporary electrical wiring for construction sites
Temporary for construction Construction work requires electrical power for many purposes. However, exposure to weather, frequent relocation, rough use and other condi-tions not normally encountered
Requirements for distribution box at construction site
The electrical appliances in the box shall be installed on metal or other insulating plates and fastened in the box. The metal base plate shall be electrically connected with the box body.
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Requirements for distribution box at construction site
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