Adding 4 more panels to an existing 46 panel system - NJ

[J.P.M.]

I'd also check with your AHJ (the building dept. in your jurisdiction) and enquire if additional inspection requirements apply, either electrical or mechanical.

[scrambler]

Each inverter can absolutely take the extra 650 watt. There may be some clipping, but I would not worry about it as it would be minimal...

That said you do need to check the string configuration and to which string the panels would be added to make sure you are not exceeding the MPPT specifications on any of them.

You also need to check the size of the existing breaker for each inverter to see if you will need to increase their size, and if you do you need to verify if it is acceptable for your panel given the 120% rule.

[petesamprs]

I have the following solar system:
- 46 Panasonic 325W panels (14.95 kW total) with SE P400 optimizers
- Two SE 7600H inverters, each supporting 23 panels (7.475 kW each)
- Roof mount, facing due South, no shade
- Installed end of 2019

With an EV in our near future, I am considering adding 4 panels (likely similar to existing) to this array to get some incremental production. Had the following questions:
- Can each of my inverters support 2 more panels? How much risk of significant clipping?
- Are the new panels deductible for federal tax purposes?
- NJ specific: would permits be required to add panels, if inverter not being changed?
- NJ specific: would the new panels be eligible for the SREC2 program?

thanks