Amendment 2 coming out next year thoughts?

[Gavin John Hyde]

Just been reading an article regards Amendment 2 coming out next year.
The requirements for AFDD is going to create some interesting conversations with customers as they are not cheap. Unless manufacturers get their act together I would be surprised if in 12 months they have stock or are sensibly priced.
Its hard enough to get a consumer unit or RCBO at the moment,

All change with Amendment 2, but what does it mean? | NAPIT

JPEL committee member Frank Bertie unravels some of the finer details behind the upcoming changes in Amendment 2 for BS 7671:2018 (2022). Although the Draft for Public Comment (DPC) period ended in De

professional-electrician.com

 

[pc1966]

My favorite proposed change along with the AFDD thing is earth of building foundations, who the hell is going to know once the concrete is poured, and how do you check it after for an EICR!

Oddly enough that is the one change that I think makes sense!

• AFDD - too expensive, little proof they actually are value for money in terms of saved lives versus lives lost due to board changes being refused on cost, etc.
• RCD mandatory - stupid for data centres and the like where you have high leakage stuff, safe environment, and want to be able to swap in an emergency without getting a spark in some time next week.
• Foundation earth for TN-C-S - should have been in the regs years ago when it started!

As for testing a foundation earth, my suggested approach is two bond wires to the buried steel in separate locations then to verify the bond soundness you do an end-end check on the two bond wires, like the RFC test.

 

[SparkySy]

@pc1966 I agree that it is a perfectly reasonable idea and that done correctly would be of benefit! Having been involved with agricultural installations for several years this is normal practice and if done as you say can be easily confirmed that it is still connected correctly. If you can find a trustworthy groundwork team! I have been on some jobs where it has been completely forgotten and has caused some major works to rectify.

 

[Lister1987]

OK.... results of some brief research is that basically they can't be tested anyway, beyond the internal T button (am sure this must have been discussed in other threads on here in the past). What WILL be a pain for testing is that you can't do a 500V IR from source side due to the internal electronics so gone are the days of a global IR at the board, each leg needs removing.

I dunno @dseselectric did a rather spiffing video on an AFDD tester ?

 

[telectrix]

Could you not test an afdd by getting two loose wires then using some vde pliers create pretty little arcs..??
In real terms a sort of tazer like device with the arc in an enclosure?

youse got shares in knipex/CK/bahco?

 

[telectrix]

my tuppence worth. those of us who are bona fide sparks will ignore the afdi crap and still do a decent safe job at a sensible cost, thus doing our best to keep the cowboys at bay.

 

[Megawatt]

No I am pretty sure it was @Megawatt

We have builders over here tell the electricians to install them and then remove them after their final inspection. I personally don’t do that.