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Correct rated trip switch for heating system?

  • 03-11-2013 11:18pm
    #1
    Access
    Registered Users, Registered Users 2 Posts: 2,359 ✭✭✭


    What is the correct rated trip switch for a central heating system... (external firebird heatpac and pump)

    There is already a double isolated 5 amp fuse next to the timer in the utility room but am wondering what the correct trip switch rating is?


Comments

  • #2
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    5 amp for oil
    3 amp for gas


  • #3
    Access
    Registered Users, Registered Users 2 Posts: 2,359 ✭✭✭Access


    shane0007 wrote: »
    5 amp for oil
    3 amp for gas

    So it should be 5 amp trip switch as well as 5 amp fused isolator next to timer?


  • #4
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    Double pole switched fused spur with 5 amp fuse fitted to protect the heating circuit. This will most likely be fed by a socket circuit or the like.


  • #5
    Access
    Registered Users, Registered Users 2 Posts: 2,359 ✭✭✭Access


    Thanks for that, the reason i ask is it seems to be the trip switch for our upstairs lighting circuit is also suppling power to the heating circuit.

    There is a spare space available for another trip switch to the left of this lighting circuit trip switch and i cant understand why they originally didnt put the heating circuit on its own trip switch.


  • #6
    scudo2
    Closed Accounts Posts: 2,008 ✭✭✭scudo2


    Access wrote: »
    Thanks for that, the reason i ask is it seems to be the trip switch for our upstairs lighting circuit is also suppling power to the heating circuit.

    There is a spare space available for another trip switch to the left of this lighting circuit trip switch and i cant understand why they originally didnt put the heating circuit on its own trip switch.

    Oil boiler is protected by 5 amp fuse switch which is then protcted by a larger trip switch that is also supplying sockets 25 amp or lights 10amp.
    It should never be connected to larger trips like shower etc..
    If off light trip then eirths connection should be checked as most older light circuits didn't have an eirths wire.

    ps. It is now illegal for an unqualified person to open fuse board.


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  • #7
    Access
    Registered Users, Registered Users 2 Posts: 2,359 ✭✭✭Access


    scudo2 wrote: »
    Oil boiler is protected by 5 amp fuse switch which is then protcted by a larger trip switch that is also supplying sockets 25 amp or lights 10amp.
    It should never be connected to larger trips like shower etc..
    If off light trip then eirths connection should be checked as most older light circuits didn't have an eirths wire.

    ps. It is now illegal for an unqualified person to open fuse board.

    Is that just the electrician at the time being lazy not wanting to get a separate trip switch for the heating circuit?

    Surely there the heating circuit should be on it own trip switch and not sharing a lighting circuit trip switch or am i wrong in thinking this?


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