True or False: The IQ Combiner 3 and 3C is rated for up to 80 amps of PV and storage.

• A. True
• B. False
• C. Not sure
• D. Only under certain conditions

Answer: (A)

The key idea is understanding the current rating on the DC side of the IQ Combiner 3/3C. This device is designed to carry the combined current from PV strings and, when used with storage, the charging/discharging current that flows through the same DC pathway. The internal components—bus bars, wiring, and protective devices—are sized to handle up to 80 amps of continuous DC current. So in a typical PV-plus-storage installation, as long as the total DC current through the combiner does not exceed 80 A, the box is operating within its safety limits. If your system could push beyond that, you’d need a larger combiner or separate protection for portions of the circuit.

In short, this rating reflects safe handling of the total DC current from PV and storage through the combiner, which is why the statement is true.