A PV string is ___ or more PV panels connected in series.

A PV string is ___ or more PV panels connected in series.

• A. Two
• B. Four
• C. Three
• D. Five

Answer: (A)

In PV systems, a string is a group of modules connected in series so their voltages add while the current remains the same through the chain. Because you need more than one device to form a true series connection, the smallest string uses two panels. This setup raises the overall voltage to meet inverter input needs, while the current is dictated by the weakest panel in the string. A single panel isn’t a string; it’s just a module. As you add more panels in series, the voltage increases roughly by the sum of each panel’s voltage, while the current remains limited by the individual panel current.

In PV systems, a string is a group of modules connected in series so their voltages add while the current remains the same through the chain. Because you need more than one device to form a true series connection, the smallest string uses two panels. This setup raises the overall voltage to meet inverter input needs, while the current is dictated by the weakest panel in the string. A single panel isn’t a string; it’s just a module. As you add more panels in series, the voltage increases roughly by the sum of each panel’s voltage, while the current remains limited by the individual panel current.