As solar professionals we certainly don't like to read about alleged negligence in solar installations and how these reports are hurting our industry – especially because with proper installation and risk management, solar is a very safe technology, as studies by Fraunhofer Institute and others have shown.
However, DC connectors can be a risk factor when not properly managed and we, as an industry, started adoption of Module Level Shutdown (as required in the National Electrical Code), which increases the number of DC connectors by a factor of 2-3, making the risk much harder to manage. This could turn into a bigger problem for the solar industry.
Ignoring this issue would be bad for the industry. How do we explain to customers why we've decided to mandate an increase in connection points, when it’s known that these are the weak points of a solar system?
Assessing Fire Risks in Photovoltaic Systems and Developing Safety Concepts for Risk Minimization
TÜV Rheinland and Fraunhofer Institute
Fire and Solar PV Systems – Investigations and Evidence
BRE National Solar Centre
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