The neutral conductor

The c.s.a. and the protection of the neutral conductor, apart from its current-carrying requirement, depend on several factors, namely:

• The type of earthing system, TT, TN, etc.
• The harmonic currents
• The method of protection against indirect contact hazards according to the methods described below

   The color of the neutral conductor is statutorily blue. PEN conductor, when insulated, shall be marked by one of the following 
   methods:

• Green-and-yellow throughout its length with, in addition, light blue markings at the terminations, or
• Light blue throughout its length with, in addition, green-and-yellow markings at the terminations

Contents

Sizing the neutral conductor Protection of the neutral conductor Breaking of the neutral conductor Isolation of the neutral conductor