Got the quote from a company. They’re using micro inverters, the company choose Aps ds3-l which are rated from approximately 750w, this micro inverter allows 2 solar panels to be connected to it. He is attached 2- 500w panels (total- 1000w solar panels) to the Microinverter. Those micro inverters are rated for approximately 750w. I asked him why he would put 1000w of panels on 750w micro inverters? He is his response…..
“ From an install perspective 2 channel inverters are much easier to work with. As it stands you will need at least 1 jumper mc4 for each set of 2 modules because not all the modules leads are long enough to reach the inverter. With a 4 input inverter it could be 3-4 leads per 4 modules which becomes harder to wire manage - also harder to access if there’s ever problems.
In terms of product selection both of your houses are east/west orientation. Meaning you’ll never get the full production out of each module, so you’ll never be in a position where your system clips energy production. If you were south facing you could use the 880w version but in this case it wouldn’t be worth it. Bearing in mind 500w modules are 85-90% efficient in the best conditions. 768 watt is a good AC to DC ratio for that wattage of panel.”
What are you thoughts on this?
“ From an install perspective 2 channel inverters are much easier to work with. As it stands you will need at least 1 jumper mc4 for each set of 2 modules because not all the modules leads are long enough to reach the inverter. With a 4 input inverter it could be 3-4 leads per 4 modules which becomes harder to wire manage - also harder to access if there’s ever problems.
In terms of product selection both of your houses are east/west orientation. Meaning you’ll never get the full production out of each module, so you’ll never be in a position where your system clips energy production. If you were south facing you could use the 880w version but in this case it wouldn’t be worth it. Bearing in mind 500w modules are 85-90% efficient in the best conditions. 768 watt is a good AC to DC ratio for that wattage of panel.”
What are you thoughts on this?