GB 50116-2013 第11.1.1条
| Transmission lines of the automatic fire alarm system and control lines powered at below 50V shall use copper-core insulated conductors or copper-core cables with a voltage rating of not less than AC 300/500V. Power supply and control lines using AC 220/380V shall use copper-core insulated conductors or copper-core cables with a voltage rating of not less than AC 450/750V. |