Hi,
With regards to instrument cabling
( PT,LT,FT etc) can anyone point me in the direction of information/ standards on how this is sized 0.5mm2 , 0.75mm2 , 1mm2 etc for a particular application.
As a rule it's end client that specifies power/control/instrument cabling, and seen many installations overthe years trying to get 0.75mm2 into instrument terminals designed for 0.5mm2 maximum.