Any one else applied or have experience that can help with this comment from council - design (our need) requires something bigger than 8kVA - so next up in line we chose a 16kVA but MCB is at 60A?  Got a response from council stating that inverter size can only be up to 13.8kVA due to incomer breaker size. 

Is this limit a SANS 10142 or NRS limit? Not feeding back into grid - will install CT.  I have a 60A breaker on supply and discharge from the inverter. Isn't that sufficient to protect cabling and ensure the output is limited?  

Any wise words would be appreciated

For anyone interested I figured out what the issue is. On the application form I indicated 16kVA on the grid where in fact due to the mechanical and software limits it will be 13.8kVA.