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Solar PV house fires, BRE report
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<blockquote data-quote="torbrowser" data-source="post: 531278" data-attributes="member: 35318"><p>[URL unfurl="true"]https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/630640/fire-solar-pv-systems-industry-recommendations.pdf[/URL]</p><p></p><p>Sobering reading for anyone thinking of installing solar PV or even experienced installers.</p><p></p><p>My take on this report is,</p><p></p><p>DC arcing is almost always the cause of fires</p><p>Most DC arcing occurs in the PV string isolators</p><p>Then DC connectors - MC4 plugs.</p><p>Inverters are down the list of causation.</p><p>Out of the DC isolator fires, a large part is from incorrect installation, then the isolator being unsuitable for DC, some of these isolators are rebadged AC isolators. (suspect the ones i have may be these)</p><p></p><p>My opinion on this is, general sparks (myself included), assume a PV system is just a simple plug and play install, are not familiar / experienced with DC systems and don't appreciate the extra care needed with it, very unforgiving. Combine this with a mass of low quality electrical equipment on the market that just about gets away with working on an AC system and i'm not surprised there has not been more fires.</p></blockquote><p></p>
[QUOTE="torbrowser, post: 531278, member: 35318"] [URL unfurl="true"]https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/630640/fire-solar-pv-systems-industry-recommendations.pdf[/URL] Sobering reading for anyone thinking of installing solar PV or even experienced installers. My take on this report is, DC arcing is almost always the cause of fires Most DC arcing occurs in the PV string isolators Then DC connectors - MC4 plugs. Inverters are down the list of causation. Out of the DC isolator fires, a large part is from incorrect installation, then the isolator being unsuitable for DC, some of these isolators are rebadged AC isolators. (suspect the ones i have may be these) My opinion on this is, general sparks (myself included), assume a PV system is just a simple plug and play install, are not familiar / experienced with DC systems and don't appreciate the extra care needed with it, very unforgiving. Combine this with a mass of low quality electrical equipment on the market that just about gets away with working on an AC system and i'm not surprised there has not been more fires. [/QUOTE]
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Solar PV house fires, BRE report
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