A, B, C, – 100, 101, 102 and 103
- A – Cables are protected by Conduit or Trunking within an insulated wall
- B – Cables are protected by Conduit or Trunking on a wall
- C – Where cables are directly clipped
- 100 – Cables are clipped to ceiling or Joist and they are covered by 100mm Thermal Insulation Materials
- 101 – Cables are clipped to ceiling or Joist and they are covered by more then 100mm Thermal Insulation Materials
- 102 – Cables are installed within a wall and covered by Thermal Insulation
- 103 – Cables are surrounded by thermal insulation