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  1. loz2754

    TT sub mains and discrimination..

    So if the cable routing and installation methods do not call for additional protection by 30mA RCD, and all circuits at the other end that need 30mA are so protected, then yes, the distribution circuit will be fine on an MCB.
  2. loz2754

    TT sub mains and discrimination..

    Presumably the 100mA RCD in the house is a time delay or S type? If not then there will be no selectivity achieved.
  3. loz2754

    32 amp 3 phase socket, 300ma RCD

    Not readily available in this country (last time I looked), as they're not suitable for providing additional protection, and would not comply with the requirement for socket outlets to have 30mA RCD protection. Regarding a risk assessment, the only valid reason for omitting an RCD where it...
  4. loz2754

    Teat leads megger 1552

    The 1552, which I also own, does not predate GS38. You have nothing to worry about.
  6. loz2754

    Teat leads megger 1552

    If fused test leads were required, the manufacturer would have supplied the tester with them.
  8. loz2754

    Pulling live meter tails from isolater switch in consumer unit

    Good question. I think the reasoning is that there will be parts that are live that are reasonably expected not to be, even with the protective device switched off or the fuse removed. Whether this is classed as immediate danger seems to be open to interpretation.
  9. loz2754

    Pulling live meter tails from isolater switch in consumer unit

    Not according to Electrical Safety First BPG4. 'Reverse polarity at the origin of the installation C1.'
  10. loz2754

    SBS Trade consumer units

    David Savery put out a video on YouTube about SBS going out of business. In it, he does make some interesting points about (most) other manufacturers effectively discontinuing products by not making them backwards compatible.
  12. loz2754

    UK Should vending hot drinks machines with thermostatic water heaters be classed as fixed equipment?

    There is no reason for an item of fixed equipment to be on its own dedicated circuit just because it is fixed equipment. There may be other reasons though, such as manufacturer instructions, special location equipment such as EV chargers etc, and also design considerations such as the...
  13. loz2754

    new circuit in combustible CU and SPD question

    I think you would find the code of practice for EV a worthwhile read (if you haven't already). For one thing, it points to the regulation that says each EV charge point should be protected INDIVIDUALLY by an RCD, thus ruling out the existing consumer unit setup, as the RCD main switch also...
  15. loz2754

    Would this work - back feeding a quinetic receiver?

    Did you have a specific product in mind Mr Lightyear? The link just takes me to the generic website.
  16. loz2754

    Would this work - back feeding a quinetic receiver?

    Yes it would work, if all you to want do is override the PIR to make the light come on with the switch. Obviously you would not be able to switch the light off with the switch using this configuration. The range is pretty good in my experience.
  18. loz2754

    What do I search for on Amazon: WIFI continuity Switch No current, no load

    Dry contacts or voltage free contacts is correct. The ones you linked to would do the job. These ones are well known and highly recommended - https://www.shelly.com/en-us/products/shop/shelly-1-mini-gen3
  19. loz2754

    Small galv trunking?

    There is a specific mention of not using several plates to make up the thickness.
  20. loz2754

    Small galv trunking?

    The recommended minimum for non earthed steel protection is 3mm thick steel according to Electrical Safety First.
  22. loz2754

    Regulations around stairwell wiring

    How about these?
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    1709823434476.png

    • loz2754
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  25. loz2754

    MPBC is it required

    From the often quoted bpg4-
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    1000021972.jpg

    • loz2754
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    • Category: Professional Electrician
  27. loz2754

    MPBC is it required

    The motor is surely irrelevant, if there is a large lump of metal in contact with the ground (the frame of the roller shutter door) then it's most likely an extraneous conductive part (but would only require bonding if it's simultaneously accessible with any exposed conductive parts). There are...

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