Croft

Yes landscape not portrait. You will have 4 columns of 4 for 16 panels. I had the same problem with jumbo aiko 650w 1130mm x2334mm by rotating the panel to landscape on my roof I can get 20 instead of 10. Just ensure 30cm - 40cm all round and minimum 10cm high for roof for airflow cooling for the panels Edit: oh, I changed my rails orientation to vertical and just ran an earthing jumper across the rails for bonding.

I'm with Bobster on this one. I'm waiting for sun to return this is the first month of solar and I have 6 out of the planned 16 up and I'm feeling every cloud. I think there are a few sunny days next week. It does bring me a moment of joy when the 4kw of pv produces 5kw for the moment the clouds concentrate the sun on my house till we're plunged into the shadow of another cloud and it drops back to its stable 500w for the rest of the day. lol Here in FS the sky's are pretty free of polution for the most part, so its seems I'm noticing clouds more than I did a month ago.

Hi I'm a bit late to this discussion, my 2 cents is that inverter capasitors are the limiting factor for longevity lasting for about 15years the current inverter is 5years already ⅓ of its life about. If budget is no option then 10k inverter would make most sense as it refreshes the life of the inverter provided you get the remaining roi back for the current one. When the current one fails of you have 2 then parallel leaves you with one you again need to pair out of roi sync. Parallel makes sense if you just need extra capacity with minimal outlay just add the inverter, connect to current paralleled batteries add one breaker in the AC box & may be a termination block to parallel the AC grid inputs outputs of the two inverters no more spd or seporate circuits etc, setup master slave, simple. It does, as mentioned, by others, give you extra mppt's. It will drive your batteries harder so you would need to check that batteries are comfortable with the extra max draw.