(see Fig. G68). The need to break or not the neutral conductor is related to the protection against indirect contact (fault protection). The neutral conductor must not be open-circuited under any circumstances since it constitutes a PE as well as a neutral conductor.
Characteristics of the Neutral Conductor In any electrical system, the neutral is a grounded conductor that you must size and treat differently from ungrounded phase conductors.
The color of the neutral conductor is statutorily blue. pen conductor, when insulated, shall be marked by one of the following methods The influence of triplen (Harmonics of order 3 and multiple of 3) harmonics must be given particular consideration or. The neutral conductor is protected…
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The Code considers the grounded neutral conductor a current-carrying conductor because of the harmonic currents generated by these loads. 220-22. First. you must consider the number of current-carrying conductors to see if you must derate the neutral's ampacity. you must size it accordingly.
Single-phase circuits or those of c.s.a. ≤ 16 mm2 (copper) 25 mm2 (aluminium): the c.s.a. of the neutral conductor must be equal to that of the phases. Three-phase circuits of c.s.a. > 16 mm2 copper or 25 mm2 aluminium: the c.s.a. of the neutral may be chosen to be: Equal to that of the…
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