Longbow2000

No specific training, because if you look at the form it only articulates details on the AC side of the installation. Measurements are taken from the Neutral to Earth in terms of Voltage & some earth leakage testing takes place. However, you will not find a single detail on PV Array size, voltage, number of strings.  So you can see why so many master electricians are very reluctant. Some reluctant because they actually don't know what they are signing off & herein lies the massive safety gap. 
So I am an installer that needs an installation Inspection & the master electrician is signing me off on aspects he does not have an education on. Really depends if he has taken the time to explore the solar world & gen himself up. So you can see what a very messed up situation this really is in the world of installations. 
The Sunsynk in Island mode without a Relay bond between Neutral & earth has a earth leakage that does not function on the load side. How many large installations have we seen here that look very good nice channelling & neat job but the total absence of this relay. The question is why? The poor inspector has absolutely no idea of the world of a Sunsynk. Please don't get me wrong a lot of them are very clued up & carry out Installations themselves. But there is a large portion of them that are not. 
So yes get the CoC but being a member of this forum there is more than enough resources here to make you aware of the shortcomings. 
Get the CoC for the insurance, but your home's safety remains your responsibility. 
So when a wiring diagram is requested & a form to be filled out in Cape Town I honestly think at least there is a record of what has been installed & what was planned. Better than the mess you find in so many homes.