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  1. Top Cat

    4" core bit, cuts just like butter, yeh right!

    Fitting an inline fan today. Brought my 4" core bit in and the guy says "oh those are great, it cuts through brick like a knife through butter". Yeh right i thought. Started to cut hole, the bricks were hard as rock! Also it was an old place so no cavity so you had to go through 2 lots of brick...
  2. N

    5 core with LED downlights

    I only do domestic works and recently have taken work on for more 'designer houses'. the 'designers' who specify particualr goods etc have requested a few things, which hopefully are only clever words but would apprecaite any help/direction as to what they are saying in laymans terms fire...
  3. R

    Using SWA Armour & Core in PME TNCS?

    Hi guys , was wondering if any could advise. Got a job when client is moving his shed containing Swin pool pump filter etc etc a few metres. I have disconnected for him and made safe. Unfortunately though he thought he could just bish bosh in himself but advised that would be a notifiable and...
  4. A

    25mm 5 core armoured and kva

    Hi all i went to look at a job where another electrician has installed the 25mm armoured to a 3 phase board supplying a commercial kitchen. The electrician has installed a 3 phase isolator at intake using 160 a fuses. I was wondering the max 25 mm run surface for about 20 meters also the co...
  5. sjhall

    Core drill recommendations

    Any of you lads use a dedicated core drill? Any recommendations ? Been looking at the Bosch gdb1600 so far. Cheers
  6. L

    single phase motor- 4 core cable query

    Fella's Im in the process of wiring a £15000 biomass boiler for a client, its basically an s plan on a large scale, the boiler is a wood pellet burning ETA (Austrian), The boiler is fed from a 7.5 tonne hopper which has a single phase capacitor start motor which drives a pump which pumps the...
  7. sythai

    Time for some shopping.... core drill + cutter

    Think my plumber mate must be getting fed up with me borrowing his core drill and 110mm TCT cutter. So time has come to buy myself one. Any recommendations on both items please - will get used no more than about 12 times/year, so don't really want to spend megga bucks on the drill if poss...
  8. E

    Sub - main supply cable - 2 core or 3 core SWA?

    I need to install a sub-main supply cable from the house to a shed approx 100M away. The SWA needs to be 25mm csa for volt drop requirements - I intend to install a 100mA RCD and 40A MCB to protect the cable for overload / fault protection using the armouring as a means of earth. Then with the...
  9. H

    Four core Power Cable Short Circuit

    Hello Everyone! Refer to the subject, please guide me in a situation, there is a power cable 25sq. mm, 4 core pvc/pvc non swa buried directly in ground and in some ducts.The cable has damaged anywhere and it shows short circuit between every conductor.I have tested with a uni-T multimeter, it...
  10. R

    R1 + R2 of two core SWA

    This is what I have so far, load = 42A cable chosen - 6mm = R1. R2 is the copper equivalent csa which = 9.75mm2 The closest to this I found is -10mm2 line conductor and 6mm2 protective conductor Getting to the point I think I can just reverse this to get R1+R2 so 6mm line and 10mm cpc ? Last...
  11. R

    Two core SWA

    As it is a two core cable you would use the steel protection as the earth? Where can you find the ratings for SWA ?
  12. D

    Core drills for a damp stone wall

    Anyone know of a core bit that will do damp stone walls?after spending 6 hours coring a hole through for a fan with it clogging up all the time due to the damp lime mortar in the wall.core I used was a Marcrist 750 I think which is usually spot on if it's dry of course.dont really want to go...
  13. P

    4" core bit

    I've got a job coming up which I need to install 7 extract fans. Is it worth investing in a core bit? Any of you use them or just do it the old fashion way?.
  14. C

    Is 1.5mm Low Smoke 3 core Flex thinner than the standard flex?

    My local electrical shop was out of stock of 1.5mm 3 core flex but offered to sell me the normally more expensive low smoke or heat resistant alternative for the same price. I have bought some but it is a lot a thinner than any 1.5mm I have ever used in the past or see in other shops now, its...
  15. K

    Fire alarms 2 core and 4core?

    Can anybody explain exactly the difference between using 2core/4core to wire a fire alarm system, does the cables always go back to the controller? how is it connected when 4core cable is used?, is some of the cores joined through at the detectors/ call points?
  16. L

    Cheap new drums of cable 2.5 , 1.0 , and 3 core

    Hi I currently have a few drums of cable left over from a job and am now offering them on here for a very cheap price as I need the space . They are all brand new 100m undamaged drums I have : 4 drums of 2.5mm twin and earth 4 drums of 1.0mm 3 core and earth 6 drums of 1.0mm twin and earth...
  17. S

    CCC of BS6500 1.5mm2 3 core black flex...

    Hi- anyone know what it is? Is it the same as 1.5 t+e?
  18. Sintra

    Numeric core identification.

    Guys I would like some opinions on the use of numeric cable core identification for LV circuits. See 514.5. Eg. If using a 5 core YY flex with all cores coloured black and marked in white with 1 - 4 plus a green/yellow cpc. Can these be connected into a DB without any addition sleeving ie...
  19. D

    Core drill advice

    I'm looking at buying a new drill to core drill with, up until now I've just used my SDS drill which has been fine with 100mm, or 127mm holes. However I've just bought a 150mm core and my SDS drill needed nearly all day to get it through nine inches of brick, and it didn't seem to enjoy the...
  20. E

    Best Core cutting drill

    Evening all, Looking to buy a core cutting drill that will last a fair few years. thinking about buying the bosch one as its got a 3 year garuntee with it to. And do you reccommend going for the most expensive hole cutter?? I bought a sparky core drill and decided im taking it back as it...

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