Operating the Sunsynk inverter as a UPS
I'm in the UK and would like to use the system as an UPS running off its Sunsynk battery. I have a number of questions about that so firstly can someone point me to any document that explicitly covers all the required settings and connections?
I'd specifically like to know:-
A. Do I need to use e.g. my 2kVA gene to energise the inverter for off-grid use? I have a (4PDT) changeover switch that I can mount in the Consumer unit that can isolate the grid (manually) in the event of an extended grid outage and connect the gene in 1 throw.
B Is it better to connect the gene direct to the inverter up in the loft or just isolate the grid and feed the gene power into the Consumer Unit downstairs?
C. I have a big (3000VA) APC Smart UPS. If I just need to energize the inverter can I use this Line Interactive unit which outputs a Modified Sine Wave or could that cause any damage?
Thanks in advance. Andrew.