I need to run mains cable across a room (both parallel and then perpendicular to the joists). Normally I'd simply drill holes >50mm below the top of the joist when running perp and then clip to the joists below 50mm when running parallel to them.
However, this floor comprises a concrete slab with 5cmx5cm joists set out across it (shimmed here and there to help level them). So, I can't drill holes 50mm down the joist and I can't run cables under the joists (when running perp to them) and, though I can clip to the side of them when running parallel, I'm still running closer to the boards above than I'd like.
In this situation do I need to use some form of metal conduit to protect the cables in order to be able to run them closer to the floorboards?
Alternatively, if I run the cables right up against the wall, does this place them in a safe zone and so mean the usual 50mm rule does not apply?
Cheers,
iep
However, this floor comprises a concrete slab with 5cmx5cm joists set out across it (shimmed here and there to help level them). So, I can't drill holes 50mm down the joist and I can't run cables under the joists (when running perp to them) and, though I can clip to the side of them when running parallel, I'm still running closer to the boards above than I'd like.
In this situation do I need to use some form of metal conduit to protect the cables in order to be able to run them closer to the floorboards?
Alternatively, if I run the cables right up against the wall, does this place them in a safe zone and so mean the usual 50mm rule does not apply?
Cheers,
iep