Table 5.7 - Main earthing and main equipotential bonding conductor
----------------- sizes for TN-S and TN-C-S supplies
Phase conductor (or neutral for PME supplies )
Earthing conductor (not buried or protected against mechanical damage)
Main equipotential bonding conductor for PME supplies
Main equipotential bonding conductor
csa mm˛
csa mm˛
csa mm˛
csa mm˛
4
4
6
10
6
6
6
10
10
10
6
10
16
16
10
10
25
16
10
10
35
16
10
10
50
25
16
16
70
35
16
25

Extracted from The Electricians Guide Fifth Edition
by John Whitfield

Published by EPA Press
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