M
m1ck_b87
Adibiatic equation is not used for main bonding conductors
No, with TN-C-S the minimum CSA of 10mm² applies to both the earthing and bonding conductors.Bgb book states minimum size conductor of 10mm in relation to neutral conductor upto 35mm on a tnc-s system. so basically if its a 6mm main earthing conductor the bonding conductor still has to be 10mm, now tn-s is different no less than half rhe size of earthing conductor , so my question to you is would it be acceptable as long as no thermal damage on a tnc-s system.