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CHANGES IN AMD 2 RELUCTANCE TO COMPLY

John Peckham

I heard before AMD 2 that compliance with the requirement to install AFDDs where required would stop clients having consumer units upgraded due to the additional cost. 

The requirement to fit as a "shall" is limited to 4 types of installation has anyone experienced a refusal to upgrade the installation with AFDDs when replacing a consumer unit?

Also has anyone experienced any reluctance when upgrading an installation where SPDs are required under the new provisions of AMD 2?

The same question as above, any reluctance to install smoke detectors in domestic premises where an SPD needs to be fitted to the circuit supply the smoke detectors?

Thanks

JP

 

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  • 0

    Sparkingchip

    There is no "shall" requirement to fit AFDDS in your thatched cottage. It is however recommended so you might want to talk to your client about this.

    If the cables in the loft  are lighting cables probably a waste of time as AFDDS need to monitor at least 2 1/2 A of load current and probably the lighting is LED so probably a lot less than 1A. Steel conduit or MICC cables would be a better option for squirrel damage. In any case how do you get  £2K to £2K or more for AFDDS when they retail at £120 including VAT?

    Keylevel

    Where are these exposed bus bars on the consumer unit? No issue with all RCBOs as long as they are Type A. Will surge protection be fitted?

    I really want to hear about customer refusing to have work done because of the new requirements to install SPDs and ASFDDs in AMD 2. So could I ask readers of this thread not to include other rabbit hole questions on other topics.

    Thanks

    JP

Reply
  • 0

    Sparkingchip

    There is no "shall" requirement to fit AFDDS in your thatched cottage. It is however recommended so you might want to talk to your client about this.

    If the cables in the loft  are lighting cables probably a waste of time as AFDDS need to monitor at least 2 1/2 A of load current and probably the lighting is LED so probably a lot less than 1A. Steel conduit or MICC cables would be a better option for squirrel damage. In any case how do you get  £2K to £2K or more for AFDDS when they retail at £120 including VAT?

    Keylevel

    Where are these exposed bus bars on the consumer unit? No issue with all RCBOs as long as they are Type A. Will surge protection be fitted?

    I really want to hear about customer refusing to have work done because of the new requirements to install SPDs and ASFDDs in AMD 2. So could I ask readers of this thread not to include other rabbit hole questions on other topics.

    Thanks

    JP

Children
  • 0 in reply to John Peckham

    There are a number of blanks missing next to the main switch. The unit is also very high, so someone could easily slip when trying to operate it.

    I don't have the details for what is to be installed, but I will report back when the job has been done (a couple of weeks). I can also ask the house owner to confirm if SPDs and AFDDs were ever brought up.

  • 0 in reply to John Peckham

    I do believe that there is a willingness amongst most contractors to comply with BS7671 whether the word "shall" or "should" is used to convey the concept. However, most contractors want clear, unequivocal guidance and an even playing field. If God said thou shalt not steal, it would not be unreasonable if St Peter stopped you at the pearly gates if you failed to obey. If, on the other hand, God said thou should not steal and you failed to follow the recommendation, you still might find St Peter to be rather unsympathetic to your protestations on the semantics!

    There are definitely unintended consequences to the requirement or recommendation to use AFDDs. The prudence of having several socket outlet circuits to avoid nuisance tripping may be diluted by commercial pressure. Even one extra AFDD might mean the difference between winning or losing a job. 

  • 0 in reply to lyledunn

    Surely part of the problem is too much unequivocal guidance.

    Rules and regulations are written and then someone writes a book about them and what that someone thinks they mean.

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