BS EN 60445:2017 Basic and safety principles for man-machine interface, marking and identification. Identification of equipment terminals, conductor terminations and conductors

Safety measures
Earth conductors
Colour codes
Numerical designations
Electric terminals
Electrical installations
Equipment safety
Electrical safety
Electrical equipment
Electric conductors
Electrical components
Neutral conductors
Bus-bars
Marking
Alternating current
Identification methods
Electric cables
Multicore cables

Link: BS EN 60445:2017 Basic and safety principles for man-machine interface, marking and identification. Identification of equipment terminals, conductor terminations and conductors
Source: BSI Standards