However, one might consider whether this protective measure should extend to all equipment within the specified location, thereby necessitating supplementary bonding at the load end as well.

In a way there's two different questions there. Actually installing supplementary bonding, vs achieving what supplementary bonding requires. Typically you need to achieve R ≤ 50V / Ia between simultaneously accessible parts. So where Ze is high for instance (and R2 relatively low), you might achieve R ≤ 50V / Ia without actually having to add any supplementary bonding conductors as such - as the local c.p.s. will already achieve what's necessry. Or just supplementary bonding a few carefully chosen items (e.g. those with the longest c.p.c.s) might allow the requirements of supplementary bonding to be achieved over a wider area. Supplementary bonding at the intake presumably looks pretty similar to main bonding (other than the c.s.a.s involved) and normal c.p.c.s. A lot depends on the actual numbers for a particular situation.

   - Andy.

However, one might consider whether this protective measure should extend to all equipment within the specified location, thereby necessitating supplementary bonding at the load end as well.

In a way there's two different questions there. Actually installing supplementary bonding, vs achieving what supplementary bonding requires. Typically you need to achieve R ≤ 50V / Ia between simultaneously accessible parts. So where Ze is high for instance (and R2 relatively low), you might achieve R ≤ 50V / Ia without actually having to add any supplementary bonding conductors as such - as the local c.p.s. will already achieve what's necessry. Or just supplementary bonding a few carefully chosen items (e.g. those with the longest c.p.c.s) might allow the requirements of supplementary bonding to be achieved over a wider area. Supplementary bonding at the intake presumably looks pretty similar to main bonding (other than the c.s.a.s involved) and normal c.p.c.s. A lot depends on the actual numbers for a particular situation.

   - Andy.