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<blockquote data-quote="Sidewinder" data-source="post: 366854" data-attributes="member: 9512"><p>The issue is that IF the PV feeds in down stream of any final circuit protective device.</p><p></p><p>The protective device for the final circuit could trip, to protect the innocent, whether that device be MCB, or RCD.</p><p></p><p>Then the Micro-generation can shut down 5s after loss of supply, so for a "large" final circuit, that could be 10s after the fault occurred.</p><p></p><p>For an RCD protected circuit with someone holding on to the metal nail they have just hit into the live conductor of the flat twin cable, the RCD say trips in 300ms, the solar micro-generation can keep back feeding the circuit for up to 5s after the loss of supply.</p><p></p><p>It, may, shut down sooner, but, the product standard only requires shut down in 5s.</p></blockquote><p></p>
[QUOTE="Sidewinder, post: 366854, member: 9512"] The issue is that IF the PV feeds in down stream of any final circuit protective device. The protective device for the final circuit could trip, to protect the innocent, whether that device be MCB, or RCD. Then the Micro-generation can shut down 5s after loss of supply, so for a "large" final circuit, that could be 10s after the fault occurred. For an RCD protected circuit with someone holding on to the metal nail they have just hit into the live conductor of the flat twin cable, the RCD say trips in 300ms, the solar micro-generation can keep back feeding the circuit for up to 5s after the loss of supply. It, may, shut down sooner, but, the product standard only requires shut down in 5s. [/QUOTE]
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