Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
I'm planning to do a partial house re-wire. Existing cabling is sound
and legal (16th edition) but I need to add some additional sockets and I also want to split the ring main from existing single RM circuit to create two rings (Kitchen and rest of house). Question: Do I have to cover the cables with either plastic or metal capping or is this optional ? thanks Andy |
#2
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
ac1951 wrote:
I'm planning to do a partial house re-wire. Existing cabling is sound and legal (16th edition) but I need to add some additional sockets and I also want to split the ring main from existing single RM circuit to create two rings (Kitchen and rest of house). Question: Do I have to cover the cables with either plastic or metal capping or is this optional ? The 'On-Site Guide" will tell you you this (and lots of other useful stuff). Cables don't have to be capped in any way (i.e. can just be buried in the plaster) if they are in 'permitted areas', these are (basically):- 150mm band of wall adjacent to a vertical corner. 150mm band of wall below ceiling. Vertically from an exposed accessory (e.g. switch or socket). Horizontally from an exposed accessory. Ouside of these areas buried cables must either be capped with a metal protection or be at least 50mm deep. This is all from memory so check it before doing all the work, as I said I suggest you get a copy of the "On Site Guide". -- Chris Green |
#3
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
wrote:
big snip What he said, and Ouside of these areas buried cables must either be capped with a metal protection or be at least 50mm deep. *earthed* metal protection if this is the case. This is all from memory so check it before doing all the work, as I said I suggest you get a copy of the "On Site Guide". Yup, well worth it. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#4
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
On 24 Oct, 13:49, John Rumm wrote:
Ouside of these areas buried cables must either be capped with a metal protection or be at least 50mm deep. *earthed* metal protection if this is the case. Does the capping really have to be earthed? Is it a recent requirement? The reason I ask is that when we had our kitchen installed a few years ago the electrician applied some capping to some cables that would be buried diagonally in plaster but I saw no sign of the capping being earthed. He seemed competent as far as I could tell... ~~ Bob |
#5
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
*earthed* metal protection if this is the case.
Does the capping really have to be earthed? Is it a recent requirement? The reason I ask is that when we had our kitchen installed a few years ago the electrician applied some capping to some cables that would be buried diagonally in plaster but I saw no sign of the capping being earthed. He seemed competent as far as I could tell... ~~ Bob I was going to ask that too (fan of On Site Guide and Whitfield) |
#6
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
|
#8
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
Guys,
Many thanks for your input and contribution. I think John as made the position very clear and I'll also get hold of a copy of the guide book mentioned by others. Cheers Andy |
#9
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
On Oct 25, 9:06 am, ac1951 wrote:
Guys, Many thanks for your input and contribution. I think John as made the position very clear and I'll also get hold of a copy of the guide book mentioned by others. Cheers Andy I was just by chance talking to an Electrician who told me that he covers all cables with plastic cladding when its' a new build property. He says he does this because Plasterers have often damaged cables ..... |
#10
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
On Oct 25, 12:28 pm, ac1951 wrote:
On Oct 25, 9:06 am, ac1951 wrote: Guys, Many thanks for your input and contribution. I think John as made the position very clear and I'll also get hold of a copy of the guide book mentioned by others. Cheers Andy I was just by chance talking to an Electrician who told me that he covers all cables with plastic cladding when its' a new build property. He says he does this because Plasterers have often damaged cables ..... I just called my local authority re building regs and approvals... They told me, I have to fill out a form (which he as put in the post) They will inspect after 1st fixing is complete then again after 2nd fix Total cost £170 which seems reasonable to me .... I didn't mention it was a partial rewire but I assume I will be able to state this on the form so there's no problem when the guy arrives to inspect 1st fix and finds light fittings and some sockets already in-place... .. .. |
#11
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
ac1951 wrote:
On Oct 25, 9:06 am, ac1951 wrote: Guys, Many thanks for your input and contribution. I think John as made the position very clear and I'll also get hold of a copy of the guide book mentioned by others. Cheers Andy I was just by chance talking to an Electrician who told me that he covers all cables with plastic cladding when its' a new build property. He says he does this because Plasterers have often damaged cables ..... Yup, that is quite common practice... not difficult to nick a cable with a trowel. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#12
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
ac1951 wrote:
I just called my local authority re building regs and approvals... They told me, I have to fill out a form (which he as put in the post) They will inspect after 1st fixing is complete then again after 2nd fix Total cost £170 which seems reasonable to me .... I would phone again and ask what the standard building notice fee is. If it is less than that you could ask him to explain why they charge more when it is in direct contradiction to section 1.26 of part P of the building regs. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#13
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
Tried to raise my next question under a new topic but seem to have
failed so I'll raise it here ........ I need to also sort out the earth bonding in the bathroom and kitchen, I assume that this involves making sure that the Hot and Cold water supply to sinks, baths and showers are bonded together, but should there be an earth cable from the bonding in each of these areas back to consumer unit or can this be connected into the back of the nearest power socket and what size does the earth cable need to be ? Andy |
#14
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
ac1951 wrote:
Tried to raise my next question under a new topic but seem to have failed so I'll raise it here ........ I will answer this over in that thread since others have started there... -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#15
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
On 25 Oct, 04:49, John Rumm wrote:
The relevant bit of BS7671 is: "522-06-06 A cable concealed in a wall or partition at a depth of less than 50 mm from the surfaces 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 of insulated concentric construction complying with BS 4553-1, BS 4553-2 or BS 4553-3, or (iii) be enclosed in earthed conduit, trunking or ducting satisfying the requirements of these Regulations for a protective conductor, or be mechanically protected sufficient to prevent penetration of the cable by nails, screws and the like, or ... etc So, for a cable in a wall: (i) The cable has to be armoured. (ii) Armoured. (iii) In an earthed conduit OR physically protected from nails etc. (iv) In a special zone. I don't see how any of this is relevant to steel capping, the only purpose of which is to protect cables from the plasterer. T |
#16
Posted to uk.d-i-y
|
|||
|
|||
Electrical re-wire
wrote:
On 25 Oct, 04:49, John Rumm wrote: The relevant bit of BS7671 is: "522-06-06 A cable concealed in a wall or partition at a depth of less than 50 mm from the surfaces 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 of insulated concentric construction complying with BS 4553-1, BS 4553-2 or BS 4553-3, or (iii) be enclosed in earthed conduit, trunking or ducting satisfying the requirements of these Regulations for a protective conductor, or be mechanically protected sufficient to prevent penetration of the cable by nails, screws and the like, or ... etc So, for a cable in a wall: (i) The cable has to be armoured. well metal clad - MICC for example. (ii) Armoured. (iii) In an earthed conduit OR physically protected from nails etc. (iv) In a special zone. I don't see how any of this is relevant to steel capping, the only purpose of which is to protect cables from the plasterer. Correct... and that is the point at which we came in, highlighting that Tim's original comment of "Outside of these areas buried cables must either be capped with a metal protection or be at least 50mm deep." was only partly on the money since it needs to be earthed protection (or seriously strong) to serve that purpose. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Leaky Electrical Wire | Home Repair | |||
electrical wire | UK diy | |||
Electrical wire options. | Home Repair | |||
Steel wire for electrical. | Home Repair | |||
Installing Ceiling Fan with Red wire on electrical box. | Home Ownership |