Tam, This is the old hot wire test from the previous version of BS 6266. We never meant it to be used on normal point type smoke detectors. It was first deveoped by BT ( bloody terrible, which describes the standard of service they provide) to test aspirating systems in telephone exchanges.
Buzzy, I find myself in Belfast for 5 nights, and am prepared to enlighten you on the history of this test in return for copious quantities of Bushmills at Benedicts.
Colin,unfortunately it inlikely that I will be able to join you in the sampling of such a fine beverage this week ("Work.The curse of the drinking classes" - Oscar Wilde).However,let me know eary next time you are over and I'll make a point of buying the first round (although I may give Thompsons a miss as it's just to much for a man approaching the wilderness years.
