GB 50311-2016 第7.1.1条
| **** | Wiring in hotel buildings shall be routed in metal raceways or enclosed cable trays, and firestop measures shall be taken where they penetrate fire compartments. |
| **** | Wiring in hotel buildings shall be routed in metal raceways or enclosed cable trays, and firestop measures shall be taken where they penetrate fire compartments. |
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