Whilst BS7671 has no indication on specific wiring types, many of the popular scheme operators do, so the Wiring types referred to in electraform are listed below.
- A - PVC/PVC cables
- B - PVC cables in metallic conduit
- C - PVC cables in non-metallic conduit
- D - PVC cables in metallic trunking
- E - PVC cables in non-metallic trunking
- F - PVC/SWA cables
- G - XPLE/SWA cables
- H - MICC (Mineral insulated cables)
- O - Other types of cables such as SY - YY types