18TH EDITION AMD 2

Sparkingchip:

It has to be something that should attract the attention of  The CMA- The Competition and Marketing Authority


As far as I am aware within the UK there are only two manufacturers supplying AFDD, Hager and Siemens with their Wylex and Crabtree branded products, therefore it is impossible for one of them not to end up with more than 40% of the market share.


Even if other manufacturers can licence and produce the the equipment, one or both of those manufacturers will almost certainly end up with more than 40% of the market share, so I cannot see a way that it can be introduced without approval from the CMA.


Andy Betteridge 

I understand that the Eaton and Schneider products are their own.

With that said, they are in the same club. 

Take it up with CENELEC and the IEC. I understand that the IET's hands are tied.

davezawadi (David Stone):

The DPC does not seem to be available anymore and I have only been able to read a small part because the site is worse than hopeless. It now says that comments finished yesterday! Perhaps they don't like them!

Hi David,


BSI have split the document up into four bits, I assume because their commenting software didn’t really work with such a large document. I have had to re-post links round some of my colleagues for the same reason. The four parts are: 


Chapters 1 to 45: standardsdevelopment.bsigroup.com/.../

Chapters 46 to 55: standardsdevelopment.bsigroup.com/.../

Chapters 56 to Section 740: standardsdevelopment.bsigroup.com/.../

Section 753 to Appendix 17: standardsdevelopment.bsigroup.com/.../


Regards,


Alan. 

AJJewsbury:

Take it up with CENELEC and the IEC. I understand that the IET's hands are tied.

Surely the IET have some leeway - after all we still allow ring circuits and have a prohibition on plastic CUs that don't align with the wider standards.


  - Andy.

Indeed and differences on reduced CPCs in twin and earth , the 6ka exception for consumer units downstream of a 100A fuse, reduced low voltages, transformer isolated shaver sockets, not really permitting mix and match  home brew consumer units, and a shed load of other stuff that is UK specific.

There are mechanisms for two committees to disagree, and one committee is perfectly entitled to kick back and request  clarification/ evidence/ justification of recommendations,  and even after that is permitted a degree of or derogation from the decisions of the other. After all,  if that were not the case the UK committee could safely be dismissed and be replaced by contracting translators. Schucko sockets and L-N polarity reversal anyone ?


In any case in the EU countries that do have AFDD (Germany is the one I know about, mainly) it is 16A combined lights and power circuits, not 32A ones that come under scrutiny,  I detect the UK tendency to gold plate the requirements, rather than to be practical.

There is already a huge gulf between what is in service, and the ideals of regs land - look at the discussion of the lighting circuits without CPC, this sort of thing makes it wider -  or will missing AFDD be the next 'is this a C1? ' debate item..

AJJewsbury:

Take it up with CENELEC and the IEC. I understand that the IET's hands are tied.

Surely the IET have some leeway - after all we still allow ring circuits and have a prohibition on plastic CUs that don't align with the wider standards.


  - Andy.

That's true, albeit they are additions to the CENELEC standards, as opposed to omissions. With that said, I am totally with you in that the IET should be able to apply influence but as I understand it they either do not, or cannot.

-2400-:

Is there any consensus as to whether we should keep all discussion about Amd2 DPC in one thread (ie this one) or split them up into different threads for different changes.

This one is already running for AFDDs but not yet much discussion for the other changes. 

I'm not sure I do consensus - but my vote would be for separate threads - both to keep things simpler and because the new Forum software gets pretty clunky when threads get long.

  -  Andy.