we were asked to do COC for an installation built 1960s so there is no earth conductors only the steel conduit that serves as earthing system.
now we know SANS 10142-1 - steel conduit cannot be used as earth conductor although it must be earthed.
the conduit we tested, tested good wrt continuity and is overall in good condition.
i know there was a clause that stated if the installation is stock standard with no changes and was done prior 1995 it can be passed as safe to use.

i have been reading through the updated SANS 10142-1, DON'T KNOW IF IM JUST MISSING IT.
i need some help here please, can a COC be issued if earth wire isn't installed for this installation.
can the metal parts in PSO and light boxes be earthed from metal box with earth wire and obviously a sound connection using lugs and bolts or pop rivets.

it must be noted that i haven't been active with installation work and are getting back into things.