core

  1. J

    4mm 4 core SWA feeding 32amp 5 pin TPN socket

    Hi, Just carried out a job today and it's been playing on my mind ever since. Basically I installed a 5 pin TPN socket to supply a compressor. The compressor load is 7.5kw, star delta starter. I decided to go for plug and socket arrangement because the board is close to full capacity and they...
  2. S

    Single core double insulated cable, a code 4?

    Would you put this as a code 4? The cable has no earth but is double insulated and the accessories it runs between has an earth. Or is this actually okay? I can't find anything about this. Thanks
  3. B

    Earthing on multi core 3 phase system

    Hope someone can advise, present cables supplying power to a drive for a 453kW DC motor is 2 x 400mm single core cable per phase. Motor is being upgraded to 630kW, the installer wishes to install an additional 400mm per phase to carry the load for the new motor. There is some debate as to the...
  4. sythai

    Core cutting tips please.....

    Evening Chaps... Usually try to avoid core cutting if poss or have been lucky on most jobs before and managed to cut from the outside in.... if you know what I mean. But have a few coming up at where I've got to cut from the inside ---> to out. Couple of questions please ? - Best way limit...
  5. L

    Addng cpc to two core lighting circuit

    Fellas is it permissible to run a single 2.5mm in a loft or do really need double insulated?, there has been an attempt to add an earth to the circuit before but they missed the switches out and some fittings are 32Ohm R1+R2, it's in a bungalow so should be easy
  6. A

    single core cables not glanded?

    What code would you give on a pir,when single core cables that are installed in flexible conduit and the conduit is not glanded into a box? The single core cables are terminated into a lighting choc box. Cheers!
  7. D

    core drill idea

    I have a makita HR2470 an sds drill and want to know if i can use it for core drilling applications 4" core holes for extractor fans etc whats the difference between a standard hammer drill and a diamond core hole drill? at the moment i rent one for the day £25.00 cheers luke
  8. S

    Single core or 3 phase?

    Hi, Quick question, Where i work they are building a new building out the back, its a fairly big building and we are having to supplies from 2 different sub stations, whilst talking to a friend at work we where talking about what the HV supply (11KV) would be in terms of cable, do they use a...
  9. M

    Good drill for chopping out and core drilling

    As the title suggests I'm looking for a heavy duty mains drill that will nicely chop in sockets and drill through tough concrete and also drill out 4 inch core's through brick. :D Is there a drill that has the best of both world's?
  10. D

    Aluminium core A/SWA?

    Got a contract where a solid alu 4 core armoured cable (we think it's 50mm) is to be reused. As it's serving a tpn supply there is an issue as to whether the armouring can be used as a CPC,as there will be no spare cores. Now I assumed..(didnt check on site!)...that the armouring would also be...
  11. L

    Reinforced 6 core burglar alarm cable

    Hi guys, Does anyone know where I might be able to get hold of some reinforced burglar alarm cable? It's to be run from the main house control panel to a shed in the garden.
  12. N

    Any tips on pulling single core cable into conduit

    We have today been pulling some single core cable into conduit and ran into a number of snags. Mainly the ball of knitting wool left after the majority of the cable had been pulled. We overcame this by adjusting the length of all cables to be the same when there was still only about three of...
  13. N

    Multistrand single core lighting

    Hi can anyone tell me where I can find info on 7 strand single core 60's lighting cable for resistance/meter and material etc I expected to find in App 4 7671 but can't see it. Were there several materials used in the 60's ie tinned, copper, steel? I'm not sure what the material is. Any advice...
  14. J

    Which diamond core cutter set do you use?

    Right i think im going to order the Makita 8406 Core drill, however i wanted some advise as to which core cutter set i should use with it. Would like some review on the sets you currently have, as their are so many to pick from. Would appreciate any good suggestions. Thanks J
  15. J

    Help need adivse on core cutter

    I probably speak for most electricians when i say i hate cutting out a core hole into an exterior brick wall. Could someone please advise me on a 4" core diamond cutter that will be the most effective for this job? I currently have one i paid £40 from and it is total rubbish! I have been told i...
  16. R

    3 core 4mm flex - where from?

    Morning all Other than my local TLC, nowhere seems to stock "3 core 4mm flex". I was connecting a new cooker up yesterday, and the manufacturer recommends "3 core 4mm flex" as a minimum spec. Now on a Sunday afternoon, not much chance of finding any of that, so I used some 6mm T&E that I...
  17. J

    runniing single core tails in trunking

    hi all just reading through and i have come across a post. it was about running single core 16mm tails to 5X CUs only 2way 5 sockets and 1 lighting point per CU. as if one trips it wont take the other 4 rooms out with it. i know you have to put an isloator on any tails lengh over 3m but...
  18. D

    Current carrying capacity,3 core, SWA buried

    Garage install using 4.0mm SWA 3core, clipped direct 10m then buried underground 10m. Would 4.0mm SWA be sufficient to carry at most 38 amp? (32amp ring + 6amp lights) Looking in regs (page 280) I'm not sure what to use 6.0mm or 4.0mm, as for 3core it states maximum current carrying...
  19. S

    3 core twin and earth cable what colour should you use as the neutral

    3 core twin and earth cable what colour should you use as the neutral. Or can u use any. As long as u label it with blue sleve
  20. S

    Core bits

    Hello, I am looking at installing a fan, however I don't want to buy a set of core bits for at least £150 so I think I shall just buy one core bit, which size would you say would be the most common, looking around I see fan diameters vary from around 170mm to 210mm so I guess just buy the one...
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