| 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 mm²
|
csa mm²
|
csa mm²
|
csa mm²
|
|
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 Click Here to order your Copy.