OP
Deleted member 9648
To my mind, using the g/y in a flex as a live conductor is abhorent. I carry 5 core flex for items such as cylinder stats, timers etc. No excuse not to - it's readily available and not overly expensive.
I come across g/y in flex used as live all the time, so know to watch out for it, but I think it should be disallowed by regs.
Totally agree....although the OP's question concerned coding on a PIR,for which the only concern is regulations,not personal opinion.
I will now put my hands up to using a G/Y in a flex as a live last week.....the only time in 30+ years....(hangs head in shame)
The scenario was a "oh...while you are here,could you fit a wireless stat to my heating,it's just on TRV's at the moment".
Well as it happened I had a stat on the van,but only 4c flex. Investigation showed a connection box in the airing cupboard,and the reciever could mount directly underneath....so about a foot of flex tops. A trip to the wholesaler would have wasted best part of an hour,so I used the 4c and sleeved the G/Y. Still having nightmares about it now.