New Cable Colour Code

Technical Guidelines

Installation guidelines | Cable supply evaluation

Installation guidelines

Precautions

In the new colour code, the black core is changed from neutral to phase and the blue core from phase to neutral (see Table 1). Wrong connection of these cores will lead to increased risk, leading to possible electrical accidents and short circuiting, in particular during the transition period. To ensure electrical safety, it is recommended not to conduct, whenever practicable, works on "LIVE" installations at any cable colour change interfaces. Where serious inconvenience would arise from isolating electrical circuits for works at the cable colour change interfaces, adequate safety precautions should be taken to avoid danger from "LIVE" working conditions (see Code 4 of the CoP for details).

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