- Minimum cross sectional area for power wires 2’5 mm2
- Minimum cross sectional area for control and maneuver wires 1’5 mm2
- Color cable coding:
* Black for phases
* Blue for neutral and 24 Vac circuits
* Yellow/green - earth
* Red for power 230 Vac control
* Brown for control with 24 Vac
* White common for 230 Vac controls
* Orange for interlocking circuits from other cabinets