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A large accommodation block has a main supply (3 phase) of 120mm. What size should the main equipotential bonding be?
7671 section 544 refers to main 'protective' bonding conductors. Do they mean 'equipotential bonding, as subsequently referred to in 544.1.2?
My reading of this is that the installation only needs bonding conductors of 25mm if copper.
If the installation is PME, then it could be 50mm??
Any help appreciated.
7671 section 544 refers to main 'protective' bonding conductors. Do they mean 'equipotential bonding, as subsequently referred to in 544.1.2?
My reading of this is that the installation only needs bonding conductors of 25mm if copper.
If the installation is PME, then it could be 50mm??
Any help appreciated.
