I understand you can use an earthed steel plate to protect cables in a wall without RCD protection. Metal capping is thin and could easily be punctured by a picture nail - a 2or3mm steel plate would put up a good fight against a brass nail.Just want to put this one out there...How many of you use metal capping or metal conduit to protect cables chased in walls?
Is this a requirement when the circuit is protected by RCD?
also using capping can sometimes allow you to pull your cables back/pull new ones thro if needed. cant do that if plastered straight over cables, damamage to decs etc. also thought that plaster can degrade sheathing over time.I always use capping - the plastic variety. As previously said, it protects against the razor edge of a dopey plasterers trowel. However, although not a reg, I deem it to be particularly good practice - the same as earthing back boxes and doubling over conductors.
Not any more..... there is no lime in plaster now a days.also thought that plaster can degrade sheathing over time.
Thats why they invented clout nails lolive just had this sam problem i dont normally cap cables (to keey cost down) just clip confirmed with customer and they wer fine with this. gets a phone call 2 days later "plasterer said cables HAVE to be capped by the regs and will not proceed till this is done", "fine ill do it but it doesnt have to be done and i havent quoted for it in the price" i said. wouldnt have minded but had problems with there plumber too coz he was to lazy to move his boiler 2 inches across so had to relocate all circuits to a new position so as not too close to his boiler/pipes etc.
capping pins are a pain in the A*** too- ping ping ouch!!
I just clip cables in their chases where i can and I use bonding plaster to cover the cable with care then the plasterer just puts a finish coat. I've not had any problems this way as I can't get on with cappingI hate capping. Maybe they used to when it's use was more widespread, but they definately don't double-press it these days (to keep costs down) and so the edges are burred and often very sharp. I've seen some very serious cut injuries in the automotive industry due to sharp panel edges.On top of that it does not count as mechanical protection being so thin (usually 0.7mm, sometimes less). 3mm is generally recommended for mech protection, though I'd have thought 2mm would be sufficient in most instances (domestic).
I just clip cables to most walls. They become encapsulated when the boarding is glued on. If a plasterer is likely to be wet plastering the wall I will consult to see if he's happy to plaster over exposed cables. I might use capping if it was a plasterer who I didn't know though.
Same here - never had any problems over the years; just the occassional other tradesman who swears that capping (plastic or otherwise) is a requirement.I just clip cables in their chases where i can and I use bonding plaster to cover the cable with care then the plasterer just puts a finish coat. I've not had any problems this way as I can't get on with capping
I use tie wrap bases and tie wraps to secure the cable/ cables followed by plasterboard adhesive - is that the same as bonding plaster? Sets rock hard and has got me out of trouble when securing back boxes to dodgy walls!I just clip cables in their chases where i can and I use bonding plaster to cover the cable with care then the plasterer just puts a finish coat. I've not had any problems this way as I can't get on with capping
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