Recent content by sinewove

  1. S

    RCD without neutral 2 phase supply

    In the past have seen a resistor,(100k or 100? ohm)connected between one phase and N on a 4 pole rcd so that the test button will work as normal and the unit will operate on 1,2 or 3 phases. Regards,S
  2. S

    One RCBO killing entire board?

    Would say it was very good practise for a long lighting circuit enclosed in thermal insulation. S
  3. S

    The Old Chestnut returns

    Recently had a job where I applied bonding to a metal pipe at the stop tap before the plumber had plumbed in the boiler and kitchen.Came back weeks later and metal stop tap was under the floor with new plastic pipe joined on and new stoptap.Should main bonding be disconnected from the old...
  4. S

    Bad emergency lighting install

    Not an expert on em lighting,but could a contactor on each lighting cct with series contacts break the cct to the em lights if any lighting cct failed?
  5. S

    Running 2 phase in swa

    Assuming your supplying 2 phase and neutral supply you could use a 2 pole or 3 pole mcb mcb with L3 spare,subject to the armour being suitable for the earthing system.You would never switch 2 phases with a single pole device.
  6. S

    Advice on prepayment meters to be fitted in flats.

    Newfutile,have you had any call outs under warranty for these meters?That was my biggest concern about taking on the job.Thanks,S
  7. S

    Advice on prepayment meters to be fitted in flats.

    Have been asked by a customer to fit prepayment meters in a house divided into flats. Not seen the job yet,but told each flat has a cu.Have been in contact with S P Wales, who can supply digital meters,and prepayment cards,which the landlord sells to the tenants.In the past have only fitted...
  8. S

    Professional Status..

    Don't forget to book the seal fairy for the installšŸ˜
  9. S

    350ma test for type A rcds

    The installation is in a s/s food servery unit and is only about 3m long,so no long circuits and no loads to affect the rcbos.Gone online and hager do,nt appear to make a rcbo above 30ma,or an s type rcbo.Will check again on Monday and report back.The meter is a robin KMP 5404.Have just tested a...
  10. S

    350ma test for type A rcds

    Sorry thought they were tested at 350ma? Tested 9 brand new Hager rcbos (type A) today and they only tripped when the Robin was set to 300ma.So they must be old stock? S
  11. S

    350ma test for type A rcds

    Just wondered how we would know a 30ma type A rcd/rcbo will trip at 30ma,if we can only test it at 350ma?Think I must be missing something.Thanks for any help. Regards,S
  12. S

    No antisurge label ā°with db

    No label for antisurge mcb on new bg cu.Is this common on other brands,or my fault for buying a cheap unit? S
  13. S

    The dreaded hot tub!!

    If you make the install tt with a rod near to the tub,you could supply it from a separate dp rcd or a dp rcbo if you could find one to fit the board.S
  14. S

    Proteus 3 phase DB horizontal

    I used to make up type A boards using Hager enclosures and devices but Hager will give no warranty on home made boards even with their own parts,so w,ere stuck with Proteus.. S
  15. S

    Self cerification of work but non member of ECA

    More customers have heard of nic than napit,and you can transfer to ac later if you expand,but for domestic work they do the same thing for registering notifiable jobs. S

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