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GB 50217-2018 第3.2.3条 Standard for Cable Design of Electric Power Engineering

Cable selection电气工程

GB 50217-2018 第3.2.3条

| **** | Cable sheath selection: For direct burial or conduit laying, steel-tape armored or steel-wire armored cables (e.g., YJV22) should be used; for indoor cable tray or trunking laying, unarmored cables (e.g., YJV) may be used, but mechanical protection must be considered. |

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