just to clarify on here that i am an electrician. i change fuseboards almost every day at work. i work in rewire squads. the way we work is that the rewire squads go in and rewire/upgrade the house then the testers come in and do the required testing. the reason i posted this question is that i am not 100 percent certain on the certification side of things as i do not have my inspection and testing certificate. surely its better to ask this question on a forum rather than just go do a job if i am not 100 percent certain? after all it is a forum......