![]() ![]() ![]() There is also another method for calculating the size of the protective earthing conductor as illustrated on the top of page 252 (G38). Please refer to the attached document in pages 251 (G37) and 255 (G41) where it is illustrated that the earthing and neutral conductors are sized according to their respective phase conductors. ![]() This can be illustrated in Schneider Electric's 'Electrical Installation Guide' which is based on IEC 60364. IEC standard 6 illustrates how to size a protective earthing (PE) and neutral conductors. According to the required earthing scheme, you should size your earthing and neutral conductors. The earthing schemes and sizing differ according to the earthing scheme (TT,TN-C,TN-S,IT.etc). ![]()
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