tails

  1. D

    Fused main switch - tails over 3m

    A quick question regarding tails and the 3m length. I need to move a consumer unit, however it will be around 5m from the DNO cutout. Is it acceptable to install a REC2 isolator at the meter cabinet, 3m tail length to an accessible position and then a fused main switch, followed by around 2m of...
  2. kropaske

    Cloth covered tails advice

    Been asked to price CU change but i am concern about tails between cut out and meter. I'ts top floor maisonette and main cut out is in the cupboard downstairs by the front door. From there cloth covered tails run in metal conduit(which is used as main earth) approx 10 meters to the cupboard in...
  3. E

    Meter tails in ceiling ?

    Hi all, I am moving a CU from next to the meter to about 1.5 meters away on an adjacent wall. Am I OK to run the meter tails through the ceiling void between the joists (plasterboard ceiling) to the new CU position or is a case of installing an isolator and 25mm swa? Many thanks
  4. Marcus Vaughan

    Coding question - Twin and Earth Tails

    As above really. First time I have seen this but its basically 16mm twin and earth connected straight into the outgoing side of the meter, and into the consumer unit. Quality. Couldn't quite get a picture of the external MET but can confirm an additional cable has been added to bring the size of...
  5. D

    25mm tails why..?

    Have you ever come across a melted 16mm tail ? Me , no never ... why are tails expected to be 25mm , seems utter overkill imo thoughts
    • Dustydazzler
    • Thread
    • 25mm change question tails
    • Replies: 30
    • Forum: UK Electrical Forum
  6. Weezy

    UK RCD protection to Meter Tails?

    About 20Meters of 25mm meter tails are routed though the floor boards feeding a sub main. To protect the tails under the floor i was going to fit a Mini Metal Unit with RCD protection Fused at 50A at the mains position, Just wanted to check to ensure it’s a 30ma ‘S Type’ RCD i need? As the c.u...
  7. A

    Upgrade tails on CU replacement?

    Hi. I have my NAPIT first assessment soon and I replaced a CU in a house which has 16mm2 consumer tails in place. I did not upgrade the tails to 25mm2, so my question is should I have upgraded them or am I allowed to leave the existing tails in place? I do not know the rating of the DNO cut-out...
  8. D

    Meter Tails, recessed box

    Hi all, Waiting for a bashing here, but it's something I haven't had to do until now so looking for advice on the best way to approach this. I've been asked to replace a consumer unit for a customer but the existing meter box is recessed in the exterior wall - not uncommon I know, but not...
  9. S

    Protection of Meter Tails and Length

    Good Afternoon All, I have just completed a Periodic test on a house and have a question about the meter tails. The house is 14 years old so has 25mm meter tails. The CU is in the garage and the meter box is around 7m away on an external wall as you'd expect. Looking at it, I imagine that the...
  10. W

    Mechanical protection for meter tails

    Does anyone know if there is a product for protecting mains tails in walls apart from conduit? In sure ive seen stainless steel capping or something similiar that can be earthed and is drill bit resistant?
  11. C

    25mm Meter Tails

    Afternoon, Quick question. I’ve been to a job earlier to find a fault, but this connection was at the main switch. The first set of tails come from the meter and the second set are down to another duel RCD board. Looks doggers. Checked the Schneider manufacturing instructions and I was...
  12. B

    Meter tails over 3m

    Hi all, Just doing a newbuild where the DB will be about 8m from the cut out/meter box. 25mm tails run in conduit on the surface of the outside wall then direct through the wall to the DB inside the house. DNO have provided a (non-fused) isolator in the meter cupboard after their 100A cut out...
  13. K

    Taking 25mm tails over 3 metres

    Hi all, This week while wiring a very old farmhouse for heaters I noticed the incoming cu tails were very long, around 20 metres from the fuse and meter which is located in an adjacent farm building to the house.25mm tails (double insulated) leave the meter and go into a kmf switch (sorry I...
  14. G

    35mm tails?

    Looking at a job today and the meter tails were 35mm with a 25mm earth into a 100A SP TN-S with a 10mm soldered main earth. Tail run, no more that 3m all clipped and a short run in trunking. The 6181Y is doncaster cabel brand. Measured the cable at 13.5mm OD and this confirms its definitely...
  15. P

    Meter tails from outside??

    Evening chaps First fixing a new build this week I’ve got a dilemma I’ve not come across before, the meter box is outside and the consumer unit is to go in the garage it’s on the same wall about 1.5m away but the meter cupboard is outside on faced brickwork and the consumer is inside the garage...
  16. T

    Micc tails from meter cupboard

    Hi all,been to look at flat today and it requires a new Consumer unit. Its an old porcelain type of fuse holder and shield and some of them are damaged. The flat is in one of these 60's built blocks with a meter cupboard on each floor. In the meter cupboard is the service head, meter and an...
  17. A

    3 core armoured cable to meter tails

    Hello, There is a 3 core underground armoured cable that emerges into a small "plant" room and from there it will connect to the consumer unit which is a fair distance and inside the property. A previous electrician (left when coronavirus) has already run meter tails between plant room and...
  18. J

    Extension sub fuse board were do tails go to ?

    Connecting up a fuse board in an new extension we’re will the tails go to connect to the supply and get power . thanks
  19. P

    Twin and earth used as meter tails

    So i went to a job and i came across this the house is 19yrs old and apparently this is how it was when they moved in from when it was built its the twin and earth that runs to the consumer unit I am looking at there is some 10mm earth to the gas meter that has been fitted at a later date.
  20. S

    SWA instead of meter tails

    Hi Gents, Hope everyone doing good at this hard time,i need your opinion guys I am installing new CU and Client ask me to install it somewhere roughly 6 meters away from meter box. i have decided run SWA as i can not use 3m meter tails in this case but my questions are; 1.Can i run SWA through...
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