3 core

  1. 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...
  2. 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...
  3. 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?
  4. J

    Two way light switch Hall /Landing 2 vs 3 core wiring

    On a standard hall & landing 2 way circuit (i.e both switched from either location), does everyone prefer using the 3 core method, with each light being fed by the appropriate circuit (i.e upstairs / downstairs) - are any other methods in current use?
  5. M

    3 core and earth used in ring

    socket ring wired in 3 core and earth - seems to be 2.5mm in old colors - the third core is blocked at each end. do sockets have to be in 2 core and earth or not? As the ring is being extended is this all going to be have to taken out.
  6. 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...
  7. 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
  8. B

    3 core flex.

    I'm adding a outside light to an. Existing install. The lights have been wired in an rb4. Can I add my light fitting to the circuit but wire it in 3 core flex instead of 1.5 twin and earth?
  9. B

    Use of SY 3 core in outdoor domestic lighting

    I have just been on a site inspection which produced burnt out cables (Sheathing melted or burnt away), within some ground recessed fittings. I have not seen this used before and can only find reference to this cable (SY Cable) being used for Air-con, IT and food processing as a 'control' cable...
  10. S

    3 core SWA supply with armour as N & CPC

    Hi All, First thread in ages. Recently went to a a pub to carry out some origin tests before they begin a total refurb. It used to be a 3-PH supply / metering but they are only using 1-PH (red) with single PH metering. I opened the service head to discover a core cable swa cable...
  11. tigerpaul

    3 core SWA, black for cpc

    Now then, for a single phase circuit, using a 3 core SWA having brown black and grey conductors... I always think that you should sleeve the black with G+Y to use as earth, and sleeve the grey up with blue to use as neutral. I cant find it in the regs or any of my other books, but I thought...
  12. S

    2 core or 3 core

    Hi everyone, just reading and giving myself examples of cables etc to work out cable selection and volt drop ( I know its Friday, but I have to keep reading or I will forget )!!! If for example you have an swa 3core (brown, grey, black), which , say your running to a supply from a DB board...
  13. R

    SWA 2 core or 3 core?

    I dont do a lot of external works, however, I have been asked to install some power for general lighting and powerto an outbuilding with no extraneous conductive parts 15 meters from the main board and my thoughts were; The supply is tt, so 10mm 2 core swa from spare way in main board to CU in...
  14. A

    3 core colours ?

    hi fellas, if you wired some interlinked smoke alarms with 3 core cable what colour would you use for neutral. is there a specific way ? thanks acestu
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