- Mar 6, 2023
I have an existing Sunpower 4300 watt ground array from two strings grid tied through a 5000 watt inverter. The system does not meet my usage. I was given 22 panels that I want to combine with existing system in two series strings. Is there a problem with strings of different voltage or different amperage being joined in combiner box. Does it act like amperage and voltage “within” a string defaulting to the lowest of either volts or amps?