Just wondering why a space say up to 150mm above the skirting board is not classed as a safe zone for wiring. It would make lot of wiring runs considerably shorter. I can understand the potential danger of nails from the skirting board if it was below the level of a skirting board and that in a first fit situation running it under the floor is possibly easier but in an established home with a concrete floor thats not so easy to do.