I would put it as commercial as it will have multiply users vs Domestic

With that said , are you not using outdated COC's ?

The new COC's which came into effect 1 August 2021, Old COC's are no longer valid, and only have Permanent installation , Temporary installation , Common area for multiple users according to SANS 10142
I see ECA coc has left out common areas

Foreword
This South African standard was prepared by National Committee
SABS/TC 067/SC 06, Electricity distribution systems and components –
Installations, in accordance with procedures of the South African Bureau of
Standards, in compliance with annex 3 of the WTO/TBT agreement.
This document was approved for publication in July 2020.
This document supersedes SANS 10142-1:2017 (edition 2).
The test report in edition 2 may be used in parallel with the test report in
edition 3 for a period of 12 months from the date of publication of edition 3.