martygturner

Hi, Fitting 10x 440w panels, 6 on a south facing wall and 4 on an east wall, roof mount is out just after the war build so timber was riddled with wood worm so don't fancy the extra loading. Both walls have clear unobstructed views of the sun all year at 10+ degrees sun height So what inverter? 3kw, 3.3 or 3.6kw or something smaller... we are home all day and do not plan for a battery at this time, our main use is 10am - 6pm for computers, washing machine etc we drop down to a telly, fridge and a few lights after that. So its a cut rather than replace the leccy bill, we can suck up all the output during the day and have no plans to export anything. I was planning on a 3.3kw inverter with dual MPPT's wired in a hybrid giving 2 strings of 6 + 4 ... but then have had bit of a err is that best moment. Basically from March to October there is a window between 2.30-6pm when all the panels will be alive but shifting the amount of direct light gain, so do I size the inverter for that ie 3.6kw or do I lower the kw as lets face it that will be for some 70 days of the year and go for a lower kw inverter operating at is peak performance witch probably best represents the bulk of the year, and whats best for wiring up, just good old series, am I over thinking the hybrid wiring option. The inverter will have to go inside the house, there is literally no shade on either wall when the sun hits and cannot be bothered to fit round the back and drag 30m of cable back to the consumer unit and from the panels to the inverter and to be fair our hallway gets a bit chilly so can take a bit of extra warmth. Any advice on wall fixings would be gratefully received... thanks mart.