Wiring / earthing/CCTV repair

What is OOS Scenario?

Wiring related to CCTV/Lancable is considered to be an OOS Case- Reversible case

What is not OOS Case?

Rest wiring to be considered an OOS case including underground wiring- Non-Reversible case

Single line crisp description - Why this has to be OOS?

Partner not trained under grounding electrical system