- Reaction score
- 4,168
The conductors will only be insulated once regardless - the sheath is there to provide mechanical protection to protect the insulation - not to afford an additional layer of insulation. (That's why Pyro can get away with having an earthed copper sheath - the magnesium oxide only provides one layer of insulation.)if its split concentric then the neutral is only really actually single insulated isn't it..... and we normally give single insulated conductors that arent in trunking etc a C2. Imo I wouldn't want to leave it personally
However the neutral conductors in split concentric cable will be both insulated and sheathed. The problem is that there is no guarantee you won't contact neutral (a live conductor) rather than the protective conductor when piercing the cable unlike with SWA.