D
Deleted member 26818
Don't understand why you're having trouble with this?
The conductance ratio between steel and copper is about 9:1.
By the time you've found an SWA cable where the armour has a sufficient CSA to be a bonding conductor, you will require a larger bonding conductor.
95mm2 SWA has armour which has the equivalent conductance of a 10mm2 copper conductor. Unfortunately a 95mm2 SWA cable, would where PME conditions apply require a bonding conductor with the equivalent conductance of a 35mm2 copper conductor.
The conductance ratio between steel and copper is about 9:1.
By the time you've found an SWA cable where the armour has a sufficient CSA to be a bonding conductor, you will require a larger bonding conductor.
95mm2 SWA has armour which has the equivalent conductance of a 10mm2 copper conductor. Unfortunately a 95mm2 SWA cable, would where PME conditions apply require a bonding conductor with the equivalent conductance of a 35mm2 copper conductor.