I have recently had to COC a socket outlet circuit in an existing installation. (The current one is a single 32A single phase industrial socket). This socket is the backup to server equipment via a UPS feed via a 20A 5KA S/P C/B. The problem I have is that the KA test and earth loop impedence test cannot be performed because it is fed from a UPS.
How do you complete the COC in these circumstances.