**13**Sunpower 435W panels, and I need to figure out how to wire this odd number of panels. Here are the panel specs.

Model: SPR-E20-435-COM

Nominal Power: 435 W

Power Tolerance: +5/−3%

Avg. Panel Efficiency: 20.3%

Rated Voltage (Vmpp) 72.9 V

Rated Current (Impp) 5.97 A

Open-Circuit Voltage (Voc)

**85.6 V**Short-Circuit Current (Isc) 6.43 A

Max. System Voltage 1500 V UL & 1000 V IEC

Maximum Series Fuse 15 A

Power Temp Coef. −0.35% / o C

Voltage Temp Coef. −235.5 mV / o C

Current Temp Coef. 2.6 mA / o C

My Growatt 5000ES has a max PV input voltage of 450V and max PV amperage input of 100A, so I have plenty of head room to work with.

I assume the common way to wire this for

**12**panels would be in 3 paralleled sets of 4 panels in series (85.6V x 4), for a max PV input voltage of 342.4V. My question is how to wire/add the 13th panel?

Thanks in advance.