BS EN 60446:2007 – Basic and safety principles for man- machine interface, marking and identification — Identification of conductors by colours or alphanumerics

1 Scope
This International Standard provides general rules for the use of certain colours or alphanumerics to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductor colours or alphanumerics are intended to be applied in cables or cores, busbars, electrical equipment and installations.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC Guide 1 04, The preparation of safety publications and the use of basic safety publications and group safety publications
ISO/IEC Guide 51 , Safety aspects – Guidelines for their inclusion in standards
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE The terms are sorted in alphabetical order.
3.1
functional bonding conductor
conductor provided for functional-equipotential-bonding
[IEV 1 95-02-1 6]
3.2
functional earthing conductor
functional grounding conductor (in US)
earthing conductor provided for functional earthing
[IEV 1 95-02-1 5]
3.3
line conductor
phase conductor (in AC systems) (deprecated)
pole conductor (in DC systems) (deprecated)
conductor which is energized in normal operation and capable of contributing to the transmission or distribution of electric energy but which is not a neutral or mid-point conductor [IEV 1 95-02-08]
3.4
mid-point conductor
conductor electrically connected to the mid-point and capable of contributing to the distribution of electric energy
3.5
neutral conductor
conductor electrically connected to the neutral point and capable of contributing to the distribution of electric energy
[IEV 1 95-02-06]
3.6
PEL conductor
conductor combining the functions of both a protective earthing conductor and a line conductor
[IEV 1 95-02-1 4]
3.7
PEM conductor
conductor combining the functions of both a protective earthing conductor and a mid-point conductor
[IEV 1 95-02-1 3]
3.8
PEN conductor
conductor combining the functions of both a protective earthing conductor and a neutral conductor
[IEV 1 95-02-1 2]
3.9
protective bonding conductor
equipotential bonding conductor (deprecated)
protective conductor provided for protective-equipotential-bonding [IEV 1 95-02-1 0]
m
3.1 0
protective bonding conductor, earthed
protective bonding conductor with a conductive path to earth
3.1 1
protective bonding conductor, unearthed
protective bonding conductor without a conductive path to earth
BS EN 60446:2007 – Basic and safety principles for man- machine interface, marking and identification — Identification of conductors by colours or alphanumerics