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Industry News
UL 3741 Hazard control

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...

Brett Henningby Brett Henning (guest post), 8. Nov. 2022, 0 Comments
Solutions
SMA ShadeFix Optimization

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...

Blair Reynoldsby Blair Reynolds (guest post), 2. Feb. 2021, 5 Comments
Solutions
PV Inveter Breaker - SMA Inverted

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...

Ronnie Raxterby Ronnie Raxter (guest post), 17. Feb. 2015, 28 Comments
Solutions

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...

Ronnie Raxterby Ronnie Raxter (guest post), 22. Jan. 2015, 51 Comments
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