Yes, 4 garages but only ONE fire - I read more about kitchen fires than I ever do about garage fires
Thank you for the diagrams Skenk - makes the situation even clearer.
Mikeyd, the cable is grey sheathed twin (no earth wire) as its to a light switch only
I think that's a little dubious.I've already said that it's ok to do what he originally wanted to as the switches horizontal zone would intersect the conduit , and the conduit doesn't need to be in a zone..
but ideally moving the conduit is the best thing to do...
522.6.6 A cable concealed in a wall or partition at a depth of less than 50 mm from a surface of the wall or partition shall:
(i) incorporate an earthed metallic covering which complies with the requirements of these Regulations for a protective conductor of the circuit concerned, the cable complying with BS 5467, BS 6346, BS 6724, BS 7846, BS EN 60702-1 or BS 8436, or
(ii) be enclosed in earthed conduit complying with BS EN 61386 and satisfying the requirements or these Regulations for a protective conductor, or
(iii) be enclosed in earthed trunking or ducting complying with BS EN 50085 and satisfying the requirements or these Regulations for a protective conductor, or
(iv) be mechanically protected against damage sufficient to prevent penetration of the cable by nails, screws and the like, or
(v) be installed in a zone within 150 mm from the top of the wall or partition or within 150 mm of an angle formed by two adjoining walls or partitions. Where the cable is connected to a point, accessory or switchgear on any surface of the wall or partition, the cable may be installed in a zone either horizontally or vertically, to the point, accessory or switchgear. Where the location of the accessory, point or switchgear can be determined from the reverse side. a zone formed on one side of a wall of 100 mm thickness or less or partition of 100 mm thickness or less extends to the reverse side.
oval black enamelled metal conduit which is not earthed in any way
If I'm right, the conduit he's talking about is that old oval stuff with a slit down one side (it was just a strip of metal folded over). Think it's called slip conduit.
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