I was thinking more along the line of why do the regs. not state that the main bonding should be connected to the ground side of the meter.
Then if the meter were removed the pipe in the ground (although not very important) would still be connected. Obviously the pipework would not but without the meter they may not be liable to introduce earth potential but this should then be determined as would anything else.
As it is now, if the meter pipe connections are not of negligible impedance (because of sealant etc.) then the connection to true earth would be reduced. With the bonding on the other side (of the meter), this would not matter or if it does then what level of impedance is the cut-off?
I feel people in this thread are not distinguishing between main bonding (10mm² to the MET. to equalise potential between system and true earth of an installation) and supplementary bonding (to equalise potential between parts of a location - both in the event of a fault).
Well, as you know I disagree.
As for door knobs, why are they silly exclusions thinking as you do? Imagine a bathroom with plastic pipework but with metal bath, metal basin and even a metal w.c. then none of them should be bonded.
Then if the meter were removed the pipe in the ground (although not very important) would still be connected. Obviously the pipework would not but without the meter they may not be liable to introduce earth potential but this should then be determined as would anything else.
As it is now, if the meter pipe connections are not of negligible impedance (because of sealant etc.) then the connection to true earth would be reduced. With the bonding on the other side (of the meter), this would not matter or if it does then what level of impedance is the cut-off?
I feel people in this thread are not distinguishing between main bonding (10mm² to the MET. to equalise potential between system and true earth of an installation) and supplementary bonding (to equalise potential between parts of a location - both in the event of a fault).
I'm inclined to the view that, once one excludes silly (e.g. door knobs) and/or contentious (e.g. metal baths) things, that adage of 'if it's metal, earth/bond it' is probably the common sense approach, certainly for domestic pipework, given the various uncertainties (present or future) which often exist.
Well, as you know I disagree.
As for door knobs, why are they silly exclusions thinking as you do? Imagine a bathroom with plastic pipework but with metal bath, metal basin and even a metal w.c. then none of them should be bonded.