Safety and health In building and civil engineering
Lightning protection
32.8.6. Where necessary, suitable lightning arresters should be installed on the surface to protect the installation below ground
from abnormal voltage due to atmospheric electricity.
Conductors
32.8.7. The main cables supplying current to electric motors installed in the vicinity of shafts (such as those for underground
fans or drainage pumps) should be duplicated if the stopping of these motors would cause danger.
32.8.8. The external coverings of cables should be such that they cannot contribute to the spread of fire.
32.8.9. Cables should be heavily insulated.