Arc Fault Detection Device (Arc Fault Circuit Interrupter (America))
They are here (BS-EN6206), is there any danger of the chaos they inflicted on the US being introduced here by inclusion in BS7671 in the foreseeable future?
BS-EN6206 may as well be a photocopy of UL1699 in which the manufacturers specified the test criteria and has been a bone of contention in the US ever since.
UL = US Underwriting Laboratories