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Type A rcd . EICR coding ? etc

aligarjon
Hi Guys.   Not been on for a long time, just had a bit of a search and couldn't really find anything so thought i would ask and see what you all thought.


1.  Are we or will we be coding type AC rcd's if there are LED's or induction hobs, lots of electronics  etc  present.

2. How much DC leakage does it actually take to saturate an rcd and cause  problem?

3. How much does a standard LED lamp or induction hob  leak ?

If we test an AC RCD with no load and it's fine then re-test it with all LED lights, induction hobs etc turned on and it operates correctly could we then say that it is ok with a note on EICR  OR EIC if installing any of the above.  


Obviously also on an EICR if the RCD then doesn't operate with it all on it becomes a C2 ?


Any thoughts



Gary
Parents
  • 0
    The Worcester Bosch 2000 installation instructions don’t seem to to be explicit when it comes to the choice of RCD.


    How do you know it doesn’t need a type B or F RCD?


    4.2 Mains supply

    4.2.1 Electrical supply

    • Supply: 230V AC - 50 Hz

    • This appliance must not be connected to a three phase supply.

    • The wiring between the appliance and the electrical supply must

    comply with the latest IET wiring regulations that apply to wiring a

    fixed appliance for Class 1 equipment.

    • The correct type of RCD must be employed where additional

    protection is required that is suitable for a low energy DC modulating

    pump according to IET wiring regulations.

    • External 3 A fuse to BS1362.

    • The appliance must be earthed.

    • Cable: PVC insulated 0.75mm2 (24 x 0.2mm) temperature rated to

    90 °C, to BS EN50525.

    • Any additional components that are connected to the appliance with

    mains electrical supply must not have a separate supply.

    • Additional equipment wired to the appliance m comply with the

    latest IET wiring regulations.

    • Appliance protection rating - IPX4D


    https://www.worcester-bosch.co.uk/professional/support/literature/worcester-2000-installation-instructions-1


    It seems to me the answer is to omit RCD protection by hard wiring it on its own circuit installed in a manner that doesn’t require the inclusion of a RCD.


    However potentially from next year onwards a new boiler circuit will need an AFDD, which may incorporate a Type A RCD as well as a MCB, so installing a boiler supply may cost several hundred pounds rather than a few quid for installing a simple SFCU to an existing circuit supplied by an obsolete consumer unit with a Type AC RCD that cannot be upgraded.


    There’s a lot to be said for specialising in installing 40 amp circuits for resistive loads 

Reply
  • 0
    The Worcester Bosch 2000 installation instructions don’t seem to to be explicit when it comes to the choice of RCD.


    How do you know it doesn’t need a type B or F RCD?


    4.2 Mains supply

    4.2.1 Electrical supply

    • Supply: 230V AC - 50 Hz

    • This appliance must not be connected to a three phase supply.

    • The wiring between the appliance and the electrical supply must

    comply with the latest IET wiring regulations that apply to wiring a

    fixed appliance for Class 1 equipment.

    • The correct type of RCD must be employed where additional

    protection is required that is suitable for a low energy DC modulating

    pump according to IET wiring regulations.

    • External 3 A fuse to BS1362.

    • The appliance must be earthed.

    • Cable: PVC insulated 0.75mm2 (24 x 0.2mm) temperature rated to

    90 °C, to BS EN50525.

    • Any additional components that are connected to the appliance with

    mains electrical supply must not have a separate supply.

    • Additional equipment wired to the appliance m comply with the

    latest IET wiring regulations.

    • Appliance protection rating - IPX4D


    https://www.worcester-bosch.co.uk/professional/support/literature/worcester-2000-installation-instructions-1


    It seems to me the answer is to omit RCD protection by hard wiring it on its own circuit installed in a manner that doesn’t require the inclusion of a RCD.


    However potentially from next year onwards a new boiler circuit will need an AFDD, which may incorporate a Type A RCD as well as a MCB, so installing a boiler supply may cost several hundred pounds rather than a few quid for installing a simple SFCU to an existing circuit supplied by an obsolete consumer unit with a Type AC RCD that cannot be upgraded.


    There’s a lot to be said for specialising in installing 40 amp circuits for resistive loads 

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