which MCB for Boiler ?

Discussion in 'Electricians' Talk' started by Pikerray, Jan 31, 2009.

  1. Pikerray

    Pikerray Member

    I have a 37Kw boiler to install, what size MCB will I need ?

    The run to CU is less than 1 metre on dedicated 6mm cable.
     
  2. Pikerray

    Pikerray Member

    I also have a heated Jacuzzi on a seperate dedicated circuit so what size MCB for this one ?
     
  3. CraigMcK

    CraigMcK Screwfix Select

    A big one!, 37kw is about 150Amps
     
  4. Pikerray

    Pikerray Member

    That cannot be right, the spec states an electrical power consumption of 175watts
     
  5. Clark Kent

    Clark Kent New Member

    That cannot be right, the spec states an electrical
    power consumption of 175watts



    Then you've quoted the GAS figure...
     
  6. syholl

    syholl New Member

    PMSL

    Haha, 150 amps...!!!

    If you are supplying the boiler with a dedicated radial. Then a 16 amp MCB on a 2.5mm T&E will be fine. Stick a 3 amp fuse in the fused connection unit and it will be OK...
     
  7. Clark Kent

    Clark Kent New Member

    I've got in to the habit (when wring a new boiler circuit) of using 1 or 1.5mm T&E and a 6A MCB..


     
  8. Pikerray

    Pikerray Member

    What about the Jacuzzi circuit ?

    Also can I put the Smoke detector circuit on the same circuit as the burglar alarm ?
     
  9. Bandit12

    Bandit12 New Member

    The run to CU is less than 1 metre on dedicated 6mm cable.

    Is that the size of round clip that fits it ??

    THINK YOU NEED A SPARKY
     
  10. Clark Kent

    Clark Kent New Member

    What about the Jacuzzi circuit ?

    Also can I put the Smoke detector circuit on the same
    circuit as the burglar alarm ?


    Well what rating is the Jacuzzi?



    AS for the 2nd question, do you not have the capacity?


    Piekrray, give more details..
     
  11. Pikerray

    Pikerray Member

    All the information I have is that the Jacuzzi needs a 6amp supply for the pump and 7amp supply for the heater both can be hardwired or plug in.
     
  12. JP.

    JP. Screwfix Select

    When all this work is finished..how can it be signed off?
     
  13. Pikerray

    Pikerray Member

    £50 backhander ;)
     
  14. JP.

    JP. Screwfix Select

    Bit blatant Pikerray isn't it?

    I'm all for the definition of competent person..however this is not operational with respect to your posts.
     
  15. Knowsome

    Knowsome Member

    Well if he did complete the work properly JP couldn't he get a sparks to check it out and sign it off for a reasonable fee?
     
  16. JP.

    JP. Screwfix Select

    Hence the backhander Knowsome.
     
  17. Pikerray

    Pikerray Member

    Lighten up fella's, it was said tongue in cheek.
     

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