GB 51309-2018 第5.2.7条
| **** | System cable joints **must** be made inside junction boxes; direct splicing inside hotel ceilings or walls is **strictly prohibited**. |
| **** | System cable joints **must** be made inside junction boxes; direct splicing inside hotel ceilings or walls is **strictly prohibited**. |
12 hotel MEP experts online, answers cite standard clauses you can verify.
Ask free →Engineering reference only — verify against project conditions and the latest codes.