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  1. The apprentice

    Fuses and tails.

    hi there doing some work with my gaffer just for my own mind a 60 amp fuse at the main cut out with 16mm2 tails well i assume they will be what size of main switch for the consumer unit ? could 100A main switch be put on that ?
  2. A

    Meter tails issue

    Hi guys I'm installing a CU in a new build and have a couple of questions I need some guidance with regards to the meter tails. I need to drill a hole through the wall (for the meter tails) to access the main supplies which are located in the recessed box on the outside of the property. I am...
  3. T

    16mm tails on 3phase

    Evening all Guy who owns a small industrial unit currently has 100amp 3phase At the moment he only have a single phase baord with feeds a few lights and sockets. He wants to install a 20a 3phase supply for a something The mem 20a 3phase switch fuse i got only allows upto 16mm tails and not...
  4. N

    Ok to use concentric cable as meter tails??

    Been asked to do an eicr on a flat above a shop. Tails are run in concentric cable from isolator switch by the meter, to the main switch in fuseboard. Never run into this before so not if this is still deemed acceptable or not? Any advice, reg numbers? Thanks in advance.
  5. G

    Length of tails between meter and consumer unit

    Hi, I am currently studying for my 18th edition regs update exam and came across a video by SparkyNinja on you tube. I think SparkyNinja is very good and produces high quality content. However I disagree with his interpretation of regulation 434.2.1 (i) In his video he says you need a fused...
  6. happyhippydad

    Would I still need a gland for the tails and earth on this TT system?

    The installation is TT. The meter box has been moved by the DNO. The tails will now be >3m so I will be fitting a switch fuse. I was planning on removing the DP switch in the switch fuse and replacing with a 100mA S type RCD. I would have put one in place of the main switch in the CU so this...
  7. L

    Cut meter tails

    Working on a new build site i've come back to a property that i'd 1st fixed to find someone has cut all the cables going to the exterior of the house including the 25mm meter tails in the meter box. The house has been boarded so renewing the cables isn't really an option. What would be the...
  8. happyhippydad

    Tails or SWA?

    My customers meter is being moved. The distance to the consumer unit will be approx 10m. I'll be installing a metal switched fuse in the meter. I cannot run any cables up the outside as it is having some kind of wooden finish and the customer does not want anything else on show. I can only see...
  9. Dustydazzler

    If you didn’t have shears how would ?

    Cut meter tails and other thick cables Junior hacksaw Or Nibble with side cutters until all the way through ??
  10. ThatMatt72

    Domestic Meter Tails in Galvanised Trunking...Is that a thing?

    Hey all, Excuse the ignorance here but I wonder if you lovely folk might have any opinions or better still be able to point in the right direction in the BBB. I am being asked to move a CU from its current position, behind a fitted kitchen, under the sink and totally inaccessible, except to the...
  11. D

    16mm meter tails, long run

    Hello all, I am working on a property & they need the consumer unit changed. The slight problem i have is the tails are on 16mm. But the meter is approx 10-12m (tail length) from consumer unit location. Is this length permissible. There is a KMF at the meter but the customer does not want the...
  12. C

    Tails in cavity wall

    So I have a consumer unit to change, the consumer unit was in the garage but it has been converted to living accommodation years ago. The utility cupboard is on the outside wall, the consumer unit is obviously on the inside wall but near the ceiling. The issue is when they changed the garage...
  13. happyhippydad

    Domestic Would 10mm tails be acceptable?

    I will be fitting a henly block to split the meter tails. I'll be taking some tails 1-2m a new shower consumer unit (63A RCD and 45AMCB) with no spare ways to fit extra MCB's. I'm not sure what the cutout fuse size is. I was planning on using 16mm tails but would 10mm tails be acceptable...
  14. rolyberkin

    Double batten school type flourescent replacement

    Any suggestions as to a good looking (in a modern building) retrofit for a double flourescent light fitting, the current lights are similar to a Knightsbridge 2 as below. Have converted some of the below to LED which I think is the most cost effective solution but interested if anyone has...
  15. haptism

    16mm T&E tails on 100amp fuse

    Did a job earlier in a new build, part of a 5 year old new build estate in the darkest depths of kent. Anyhow opened up CU and saw 16mm tails so assumed would be on 80a fuse as there not huge demand. Then outside to check service head and main fuse is labelled 100a ?, the tails are 16mm t&e. I...
  16. P

    C/U Tails in wall - protection required

    The existing C/U is at almost ceiling height in a room and the old tails are plastered in the wall below it before going outside to the meter cupboard (they have no protection and are just covered in plaster). The tails have to be upgraded when the C/U is replaced, so I could take the option of...
  17. J

    commercial meter tails

    bit of reassurance on coding I have 3 phase 3x150a (checked with supplier) incomer feeding meter in 50mm tails- 5omm tails to 3x blocks from meter from each block tails to various isolators all not exceeding 1m in the same cupboard, the highest fused isolator at 60a being fed with 16mm and...
  18. P

    Domestic E7 boards and meter tails

    ok a couple of questions ill keep it simple its been ages since I had anything to do with E7, is an E7 board supplying storage heaters still ok on a non rcd board ie classed as fixed equip ? who is responsible for the tails? from head to meter and meter to board thanks
  19. A

    Residual Current on Mains Tails - Installation Disconnected.

    I bought a new MFT1710 a couple of weeks ago and got a free clamp meter with it. (UNI-T UT210B, 200A Mini Clamp Meter). I finally got it out the box today and thought I'd try it on my mains tails to see if/how it's working. Surprisingly, with the consumer unit main-switch off, and the main...
  20. R

    Switch fuse for tails

    New position of replacement Consumer Unit for my customer is now going to be 7m away from the supply head. DNO fuse is 100A BS1361 and this is a large house so I still need a (potential) 100A supply. I believe that I am supposed to fit a switch fuse if tails are over 3m long. Firstly, am unclear...
  21. happyhippydad

    Tails (or rather T&E) behind skirting.

    Hello all. About to do a CU change and from the pre works visit it looks like the 16mm T&E from the meter is run 3m to the CU behind the skirting board. No mechanical protection seen. TNS. Ze = 0.28ohms. This clearly isn't acceptable and I shall advise getting it changed but my question is...
  22. the pict

    Nice soft bendy tails

    Why cant I get the same pliable cable for meter tails that SSE uses the stuff I get is as stiff as rebar whereas theirs is really bendy and easy to form if any one knows why this is let me know P
  23. mattg4321

    Meter tails in cavity

    Ok own up who's done this? I try my hardest to never do this but have, on very rare occasion installed meter tails in a cavity as the lesser of evils. Would be interesting to hear real world thoughts on this and potential work arounds so you don't have to. I know someone on here posted a while...
  24. S

    16mm SWA tails maybe 9 mtrs from isolator on a 100a supply, and other concerns - EICR opinions

    This has come up many times before and after a couple of hours reading previous posts I'm no closer to deciding on a code, note or nothing at all. BS7671 allows 16mm tails on 100A fuse if demand is less than the cables CCC, I have 16mm at 94amps and the max demand is 60a. From a previous post...
  25. haptism

    Meter tails over 3 meters

    Hello, anyone know when the regs recommending a switch fuse for meter tails greater than 3m long was introduced ? On older installations (about 20 years ago) was a switch fuse required on tails over 3m ? Thanks
  26. G

    Channel (capping) for tails.

    HI all, got some tails to run down a wall, i can and will run with 50mm depth but would also like some channel to protect aswell, seen some on another job, bloke said it was tophat channel or something like that said it was from eddy's. done a google search but cant find it, any ideas? cheers...
  27. M

    SWA For meter tails?

    I need to upgrade my meter tails to 25mm. The existing tails pass along under the pebble dash in plastic conduit (which would be too small), then apparently at an angle through the porch structure (unprotected) then turn sideways into a void & up the void to CU. I have seen other posts where...
  28. 8

    Max length of meter tails

    Ive been asked to look at the electrical installation at a large 5 bed property with an attached annexe that the owners are converting into a 2 bed holiday let. There's one supply cable that comes into the annexe for the entire property . This is currently routed via a single meter to a CU . 2...
  29. ye oldie sparks

    Distribution board tails

    Just a quickie, if the cut out fuse and head is rated at 63amp can you still use 16mm tails for a 6way board. The reason for asking is, I have to change a board in a old flush internal metal cabinet and there is next to no room inside due to the meter and cut out taking up most of the space, its...
  30. T

    Consumer's Tails > 3 metres - RCD or not RCD

    I have been going over this for some time, and every time I think I have it sorted I read something else which sows doubt in my mind again! TT system. CU to be replaced and moved to new location as not enough room where currently sited. New location will result in tails being approx 5m in...
  31. G

    Two pairs of tails from meter to two DB's - what do I record in Section L?

    Evening all, been a long time since I posted on here but I could use some advice if there's any going! I've been asked to provide an EICR for a small building we look after for our client under contract. We are all done physically on site, but I've hit a snag filling out the report itself, in...
  32. R

    Meter tails & Protection

    Had a look at a job last night and the customer had another electrician bury the cables with a bodge method of protection (they were planning on plastering over them as they are) (image attached). The tails run from the meter (out of view at bottom floor level), up into the ceiling and to the...
  33. R

    315a cut out, what size tails

    I'm looking at a job for a friend and wpd is upgrading his cut out and wants us to upgrade his whole install. my question is from the new 315a fuses wpd is putting in what size cable would i require to the panel board literally decide it. I've has a look on like and uk power networks suggest...
  34. G

    consumer unit height and tails

    Hi all, Been to see me sisters house being built and to have a nose tbh. I noticed the comsuner unit in the toilet up high, dont they have to be between 1350 and 1450mm, thought it was a reg for new build?. also saw 16.0mm T&E to the MEB box about 8 mtrs away also with a 16.0mm earth, got...
  35. G

    Pyro meter tails, can they stay or need replacing?

    hi all , im having a new consumer unit fitted ,but my meter tails are in pyro its a 1970's 2 bed terraced house.. im just waiting for my electrician to confirm if he can re use the pyro tails or they have to be replaced with something more modern. can anyone confirm yes or no have they got to...
  36. G

    Mains box to Consumer unit SWA or tails?

    HI all, usually take tails form a MEB box to consumer unit no matter what the length as long as i can get the 50mm depth, builder has told me he wants it in SWA, ive told him its pretty much impossible to terminate it right if i use SWA also i run up the cavity with the tails and there is no...
  37. R

    Fuseboards for sale and Meter tails

    hi I have 2 fuseboards for sale with 2 meters of 25mm brown and blue Meter tails ,along with 2 x 32mm compression glands and 10 blank plates. Wylex 15way fully loaded and wylex 10way fully loaded ,brand new in the box metal clad 17th edition compliant Looking for £160 for everything...
  38. T

    steel tails for new consumer unit

    is acceptable to use the existing steel tails when fitting a new cu? (provided all of the test reults are ok)
  39. B

    Recommended Wholesaler for 95mm singles / meter tails & accessories

    Hi We have a new 3 phase 200A supply installed which is to supply 4 flats & a low load landlord supply. We need to source 95mm singles that will connect from the ukpn 3 phase head into a stand alone isolator which will then connect into a 3 phase distribution board that will supply the 4 flat...
  40. S

    Meter Tails Incident

    Hi everyone, I am not an electrician and have joined this forum for some help. Here is some background information to my incident:- Background House Built 1985 Took ownership December 1999 Electricity meter replaced by electricity supplier 12 January 2004 Consumer unit upgraded 16 January 2008...
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