I want to install 24 kW photovoltaic system. I bought inverters (SMC8000TL) and solar panels. So I just have to connect them to the grid (380V/50Hz). From the AC side of Inverters to the Junction Box i have 3 mono phase cables. I put them throught 3 fuses 40A and then on the exit of fuses I put 3 phase cable for 380V. So the question is what is better to use 1 pole fuse( for each cable) or 3 pole fuse (I=34.78A). Does anybody can show pics of some already install Junction Boxes.