GB 7588-2003 第13.3.1条
| **** | **Electrical wiring insulation requirements**: Under normal operating conditions, the wire insulation layer shall withstand a **500V** dielectric strength test (no breakdown for 1 minute). Cables in hotel elevator shafts shall be **flame-retardant** (compliant with GB/T 18380.3), and conductor cross-sectional areas: power lines ≥ **1.5mm²**, control lines ≥ **0.75mm²** (copper core). |