I have electrics to add in a listed barn. It's a unlined shell of a building, grubby cobwebby beams and timbers with external claddding. Customer must have all black wiring so as to hide it as much as possible. Everything will be clipped with metal accessories. Trunking/conduits are too big and because the whole building is utterly wonky, nothing which is straight or right angled will fit anyhow.
The BLACK thing has me going, so prevents T&E.
I immediately said to the customer I could run it in H07RN-F which is defined as "heavy duty" (Hence OK for permanent wiring re 521.9.1 and BS50565-1. ).
The slimmer, cheaper and easier to use H05RR-F (Which is most rubber cable in distributors) is not defined as "heavy duty" but merely "tough". This gets into semantics, but sticking with the regs and BS50565-1, I must have "heavy duty" (that does seem to be a technical terminology) cable for permanent wiring. Hence will probably make myself insist on H07RN-F
An alternative might be black FP200. I have to admit I've not used FP cable in the past. My thinking is, I'll be up a ladder and scaffold looping and flexing this round 300 year old dirty beams. I'm concerned that the FP200 being stiff with it's alloy tube will end up a complete mess if it gets flexed much during install. - Would I be right in that prediction?
The BLACK thing has me going, so prevents T&E.
I immediately said to the customer I could run it in H07RN-F which is defined as "heavy duty" (Hence OK for permanent wiring re 521.9.1 and BS50565-1. ).
The slimmer, cheaper and easier to use H05RR-F (Which is most rubber cable in distributors) is not defined as "heavy duty" but merely "tough". This gets into semantics, but sticking with the regs and BS50565-1, I must have "heavy duty" (that does seem to be a technical terminology) cable for permanent wiring. Hence will probably make myself insist on H07RN-F
An alternative might be black FP200. I have to admit I've not used FP cable in the past. My thinking is, I'll be up a ladder and scaffold looping and flexing this round 300 year old dirty beams. I'm concerned that the FP200 being stiff with it's alloy tube will end up a complete mess if it gets flexed much during install. - Would I be right in that prediction?