To diverge slightly off topic here, the original discussion with my colleague which prompted this discussion was actually in relation to earthing arrangements on a PME supply.
Regulation 702.410.3.4.3 (ii) says on the note that where a PME earthing facility is used that it is (b)recommended[/b] that an earth rod or mat should be installed and connected to the supplementary bonding (paraphrasing)
Two things. Why would this not be mandatory rather than a recommendation if it’s actually required, and why not prohibit the use of PME all together for this type of installation rather than rodding the bonding?
Regulation 702.410.3.4.3 (ii) says on the note that where a PME earthing facility is used that it is (b)recommended[/b] that an earth rod or mat should be installed and connected to the supplementary bonding (paraphrasing)
Two things. Why would this not be mandatory rather than a recommendation if it’s actually required, and why not prohibit the use of PME all together for this type of installation rather than rodding the bonding?