When is UL 3741 PV Hazard Control the Superior Choice for Commercial Rooftop PV Systems?
In recent years, the solar industry has adopted module-level rapid shutdown as the default method to meet the requirements of...
The Top 10 Most Common Myths about Traditional DC Power Optimizers: Part 1 of 3
A University Study recently concluded that SMA ShadeFix optimization outperforms traditional module level optimizers, including in partially shaded arrays. That...
Properly sizing a PV inverter breaker
Believe it or not, code references for determining the calculation to adequately size a PV inverter breaker are longer than...
Calculating Max PV Voltage is Not Scary
In 2008, the National Electrical Code (NEC) added a second paragraph to 690.7(A) stating, “When open-circuit voltage temperature coefficients are...