Colour tab on the back should be enough normally Laurence.
There’s only four or five types, depending on, shaft size (gegsy to enter ooooh missus), fixing type (two holes 😯 or nut fixing 😯 😯 ) and how many terminals. Generally blue or yellow signifies single or dual circuit.
Dave_Conway wrote:
As an aside, does anyone know where I can buy a device that automatically shuts a PC down when alcohol is detected on the breath ? 😆