Weekend Quiz

Not enough information...

the original earth rod has been disconnected

 

The supply is P.M.E.

Is the installation utilizing the supplier's earth, or is the installation unearthed?


Otherwise, plenty of C3s I imagine - no RCD additional protection to indoor sockets, lighting circuits, concealed cables and so on; probably no c.p.c. on lighting circuits, but provided there are no exposed-conductive-parts that's still only a C3 for me. Bathroom situation will need some careful looking at - but If it's all-copper pipework it'll probably satisfy the requirements for supplementary bonding between extraneous-conductive-parts and if there are no exposed-conductive-parts (typical batten lampholder with a HO skirt and a plastic pull switch setup) than I can't see anything beyond a C3 there either.


A probable C is lack of RCD additional protection for portable equipment outdoors - so if there's a garden (and no RCD sockets marked 'for equipment outdoors' lurking somewhere) that would be a C2 for me and hence an unsatisfactory, but if there aren't any gardens, or perhaps just communal gardens that are maintained by contractors, maybe that's not a fail either.


Size of tails will need checking (possibly against supplier's fuse - for that age anything down to 30A might be possible). If the tails really are unsheathed PVC (seems unlikely) then they might be a C2 - but accessibility needs to be taken into consideration - if they're within an enclosure that only gives access by means of a tool or key then they probably don't need a sheath to comply with the letter of the regs - it has even been suggested a meter box meets that requirement!


   - Andy.

Not enough information...

the original earth rod has been disconnected

 

The supply is P.M.E.

Is the installation utilizing the supplier's earth, or is the installation unearthed?


Otherwise, plenty of C3s I imagine - no RCD additional protection to indoor sockets, lighting circuits, concealed cables and so on; probably no c.p.c. on lighting circuits, but provided there are no exposed-conductive-parts that's still only a C3 for me. Bathroom situation will need some careful looking at - but If it's all-copper pipework it'll probably satisfy the requirements for supplementary bonding between extraneous-conductive-parts and if there are no exposed-conductive-parts (typical batten lampholder with a HO skirt and a plastic pull switch setup) than I can't see anything beyond a C3 there either.


A probable C is lack of RCD additional protection for portable equipment outdoors - so if there's a garden (and no RCD sockets marked 'for equipment outdoors' lurking somewhere) that would be a C2 for me and hence an unsatisfactory, but if there aren't any gardens, or perhaps just communal gardens that are maintained by contractors, maybe that's not a fail either.


Size of tails will need checking (possibly against supplier's fuse - for that age anything down to 30A might be possible). If the tails really are unsheathed PVC (seems unlikely) then they might be a C2 - but accessibility needs to be taken into consideration - if they're within an enclosure that only gives access by means of a tool or key then they probably don't need a sheath to comply with the letter of the regs - it has even been suggested a meter box meets that requirement!


   - Andy.