singles

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  1. U

    Singles in ducts

    We have to install 3 x 240mm singles and 1 neutral to a panel in a LV room.the ducts aren't large enought.What happens if the singles are split through 2 ducts.IE, 2phases in 1 duct and the other phase and neutral in another duct.Where might i find a contradictory regulation.
  2. strider6

    Unusual singles from Batt Cables

    I was working with some odd singles today from Batt Cables, they seemed to have a plastic like braid between the insulation and the copper, almost as if it's some kind of fire rated cable, I don't believe it was LS either, it was a bit of a pita to get rid of the braid and my prysmian rolls...
  3. T

    Can SWA be run in the same metal trunking as singles?

    I have checked the regs and can't find anything to say this can't be done. Although I'm worried about cable movement in the case of short circuit damaging singles in the trunking
  4. Mark42

    Best way to parallel 25mm/35mm singles

    Hi I'm installing two new sub-mains. I need to parallel some of the supply cables. It's the main incomer in 5 x 25mm, with 5 x outgoing 25mm tails to the adjacent DB, and an outgoing 4-core 35mm SWA going off to another building a long way away. I will terminate in a 300 x 300 x 75mm metal...
  5. A

    Identify ring circuit legs that are wired in singles

    I am adding a socket to an existing ring circuit in a 3 phase cu All the connections have to be done at the cu as the sockets are inaccessible I am basically extending the ring circuit How do I identify the correct ring legs (L,N) (L,N) as they are not taped and the trunkin is packed with cables?
  6. timhoward

    Mix of old and new colours for singles for same circuit

    New one for me... Commercial building (museum), 3 phase board 16A MCB, 3 x 2.5mm singles run in 20mm conduit, ending up at an FCU. All fine. The singles are red, blue, and yellow/green. Red is used for L1, Blue is used for N My gut reaction is that this is just too confusing and needs sorting...
  7. B

    UK Singles in trunking

    In an industrial building with galvanised trunking everywhere and loads of circuits with singles, has anyone got any good tips on identifying the singles for a circuit easily if I needed to break into a ring for example?
  8. V

    Singles in conduit underground - Any reason why not ?

    I've been called in to complete a job started by someone else and I just wanted to ask the following: Basically it's to provide power to a garage and then on to provide power to a Summer House. What has been done already is a PVC conduit has been buried under the patio between the main house...
  9. M

    Stripping 16sq t+e and sheathed singles

    What's the best method for stripping the sheath off 16sq t+e and 16sq sheathed singles Both with the grey sheath Have my own method but just want other opinions
  10. K

    metal conduit Running multiple singles through a metal clad box

    Hi . Im running some conduit , a long horizontal with metal clad boxes , with vertical runs to a term box for light fittings and a couple of smoke alarms . Was going to use 4 way boxes dropping down to the sockets and up to the light s. Is it acceptable to run them through the metal clad boxes...
    • kevytee
    • Thread
    • box conduit metal metal clad multiple routes running singles through
    • Replies: 1
    • Forum: UK Electrical Forum
  11. Dartlec

    CU replacement with earthed conduit and singles

    Just carried out an EICR on a flat that was wired in the 70s - with singles run in earthed conduit to each point and the trunking providing the earth at each socket/light point. Ground floor flat, so needs RCD protection on sockets at least and seems due a CU change, but I have no experience...
  12. A

    Help tracing ring main in singles

    Hi I’m after some advice please. I’m on a job where there’s a junction box with ring main wired in singles through 50x50 galv trunking. I need to break into this ring for my additional sockets but need to identify which of the cables are incoming and outgoing ones!? I can’t follow cable in...
  13. J

    Mix of singles and twin and earth

    I have an old cob cottage where i have had to take an inch or more of the plaster off for damp proof course.The damp proof firm want all the electrics installed and hanging down ready to plaster. I dont want the cable hanging off the beams.so I thought i could wire the ccts in 25mm conduit and...
  14. R

    Tri-rated vs singles

    Is it OK to use tri-rated cable in conduit rather than singles (6491X)? Obviously of correct rating. If so, why would anyone buy singles as the tri-rated is cheaper and seems nicer to use (I have not used it before until very recently, hence the question). Cheers
  15. T

    Old lighting wired in singles in conduit

    Looking for some pointers in the right direction if possible. I come from a background of domestic work and general house bashing but I’ve been given the chance to expand my work into more commercial stuff. I will be doing this under guidance from a good friend of mine who is more commercial...
  16. I

    Use of Singles for Main Earth Conductor and Incoming Neutral?

    Hi folks, Limited experience here and never come across this before. Whilst I can appreciate the conductors may be the appropriate CSA combined, (I haven't measured them) terminating the Main Earth Conductor in the MET like this with what looks like 4 x 4mm2 doesn't allow for the conductors to...
  17. davesparks

    How old are solid core singles?

    I'm carrying out an EICR at the moment and have encountered quite a lot of solid core singles. Is there a particular time period when these were commonly in use? I'm trying to work out a rough date for this part of installation.
  18. sparks1234

    2 singles or a double

    Evening all, Somebody has said to me that if you put a double socket in a base unit for a washing machine and tumble dryer this is against regulations and that it should be 2 single sockets because of the potential loading, before anyone shouts it has nothing to do with being directly next to...
  19. Mark42

    3-Ph sub-mains on four 16mm DI singles. OK or not?

    I'm upgrading an existing installation in my own house, and would like a second opinion please. An existing sub-main, in a separate building about 10m from the supply is fed via four existing 16mm DI meter tail cables in cable tray and conduit. I inherited this installation from when the very...
  20. J

    tapping into conduit wiring with no singles cpc

    Afternoon guys Got a job my builder wants me to do in nice block of flats up town solid concrete ceilings/walls/floors unfortunately! lighting is just staying as is- but them want extra sockets added and a new 5amp socket circuit for lights the existing sockets are wired in single in tube in...

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