please make sure you get your electrical installtions in order before you pay the contractor and get a second opinion especially if you are having a house built and you have decided to use the builders electrician...make sure you check the electrical contractors qualification...because if you dont i feel sorry for you and all the problems you are going to experience.

at the very top of the COC it clearly states notes

"1. In terms of the electrical installations regulations of the OHS act (occupational health and safety act 1993 (act 85 of1993) the user or lessor is responsible for the safety of the electrical installation."