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concentric

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  1. K

    Split concentric submains

    I am currently on a big flat development project (old high school being converted to 50 flats, plus a 3 phase landlord supply). I had planned on installing 25mm 3core SWA for all flat submains as the Flats are all Electric with no Gas. However, i am now considering installing 25mm or 35mm split...
  2. W

    Current capcacity for split concentric cable

    have just had a new supply installed at a job im working supply cable in - 185mm aluminium TPN combined pen conductor split concentric cable main fuses are 315a bs88's supplied underground from transformer to building does anyone have info for current carrying capacity for concentric...
  3. T

    Aluminium concentric cable question

    Hi just new to this forum , I've been asked to wire a log cabin in a field and the nearest supply is at the stables 70m away , this is where the situation gets a bit tricky, the stables are fed by a aluminium concentric cable which looks like a25 mm aluminium Centre core with copper cores for...
  4. K

    concentric cable submain

    just quoting on a job which involves some alterations. the property is a new build block of 12 x flats (2008), each supplied with 16mm concentric cable, 60A Main switch fuse at meter position, no RCD protection and unsure on installation method etc. The property will be converted to a 'care in...
  5. E

    split concentric cable

    was reading an article in PE today about split concentric cable and it got me thinking...... .....why am I not using this more often? it's much easier to work with!
  6. C

    Testing questions?

    I haven't done any testing for a long time so some help with a few questions muchly appreciated please! Firstly, earthing. The supply cable (from underground) appears to have several strands of the sheathing coated in black insulation and which is used as the neutral with the remaining bare...
  7. FatBob

    522.8.10 Does all concentric cable satisfy BS7671 for underground use?

    Following a query in another post with a respected member about the suitability of pvc concentric cable for underground wiring, I wrote yesterday to the respected author John Whitfield, who has written widely on the subject of the IEE Wiring regulations, his most notable work probably The...
  8. S

    Concentric wiring

    Could someone please explain to me a bit about concentric wiring? If you can't utilise an RCD as TLC direct claim below then how do you meet requirements of 17th edition??? Are they just talking about a combined neutral and earth concentric wiring? I imagine you could still use a RCD with...
  9. J

    split concentric cable

    Hello, What size does the old red and black 16mm split concentric cable have ? Thanks Jimmy
  10. M

    I am Pricing a Block of Flats

    I have been asked to feed the Flats Consumer unit with 25mm 2 Core concentric cablefrom a Ryefield 18 way Board mounted at the Mains incomer. Does this comply with the 17th regs regarding mechanical protection. I must admit to using a 3 core swa in the past not concentric because of the...
  11. BigSi

    Running concentric cable

    Looking for a bit of advice. A customer has asked me if it is possible to move the meter position for a new build that he is currently building (converting a bungalow to a house). The existing supply cable is terminated into a box just below the bracket for the incoming supply cable (about 4m...
  12. marksparky

    Split Concentric to be phased out?

    As above really, heard from my wholesaler today that it was mass produced essentially for dno's and now it doesnt comply with they're new regs so it will stop bein made, is this just my supply authority (NIE) or anyone else heard the same?
  13. M

    split concentric installation

    my question is straight forward, can split concentric cable be installed underground, ie say outside buried to a large shed because i was ubder the impression that it was like armoured cable, thanks
  14. L

    Split Concentric Cables Feeding supply to shed

    Hello all, My parents recently bought a house and I've been having a quick look at the electrics. I've recently taken and passed my 17th ed, Part P and 2392 so fear not. One of things i'm looking at is the supply to the shed. This is provided from a 13amp SFCU off the ring main. The shed is...
  15. A

    15m distirbution circuit - cable choice

    I hace been asked to move a CU from next to a 3phase board in a boiler room to an office about 12 m away in the same building. It is a one story building and I am proposing taking the cable through the loft. I'm not sure if I should use 2 core 25mm SWA or 25mm meter tail cable. The total...
  16. D

    split concentric

    anyone know a suppier who will supply cut lenghs 10 meters is what Iam after but I cant get anyone local to supply Mac

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