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GB 50217-2018 第3.2.6条 Standard for Cable Design of Electric Power Engineering

Cable cross-section电气工程

GB 50217-2018 第3.2.6条

| **** | The cross-section of the protective earthing conductor (PE conductor) shall meet thermal stability requirements. The cross-section of earthing conductors for metal cable trays and distribution box enclosures in the hotel shall be determined according to the ratio to the phase conductor cross-section or by short-circuit current calculation. |

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