MPPT controller - voltage sensing without separate wires?

Do you understand how pwm works? PWM is not that concerned about voltage drops. As mentioned, pwm can deal with a 5% line drop without performance loss (most of the time). MPPT will have a 5% performance drop. It's all relative, but mppt needs the big cables.

BTW, I do like mppt, but need to keep the facts straight. Was getting 10A from 130W after clouds cleared in Bend this noon.

Sal