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Farm Building and Infrastructure
Renewable Energy
solar panel wiring checks / repairs
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<blockquote data-quote="Exfarmer" data-source="post: 7993135" data-attributes="member: 1951"><p>Are they roof or ground mount?</p><p>I do my computations on the year Nov 1st - oct 31st.</p><p>Theyear Nov 20 - Oct 21 was by far and away the worst we have had for generation.</p><p></p><p>If your panels are roof mount like mine , we have serious issues on one in stall where MC 4 connectors are laying in the gulleys of a ridged roof since thry were not secured to the back of the panels</p><p>This means serious earth leakage when it is wet with a build up of rubbish around the connector .</p><p>Most inverters will refuse to run when the resistance drops below certain levels. Older ones this wouldhave been set about 30K ohms newer one below 100k ohms.</p><p>The resistance in the system should normally display on the screen , you may need to download a manual. But most are fairly simple.</p><p>Ideally this should be in no less than 500K ohms on small to medium system, on a damp day. When it is dry probably 10 M ohms</p><p>You will need an electrician to check the circuits though</p></blockquote><p></p>
[QUOTE="Exfarmer, post: 7993135, member: 1951"] Are they roof or ground mount? I do my computations on the year Nov 1st - oct 31st. Theyear Nov 20 - Oct 21 was by far and away the worst we have had for generation. If your panels are roof mount like mine , we have serious issues on one in stall where MC 4 connectors are laying in the gulleys of a ridged roof since thry were not secured to the back of the panels This means serious earth leakage when it is wet with a build up of rubbish around the connector . Most inverters will refuse to run when the resistance drops below certain levels. Older ones this wouldhave been set about 30K ohms newer one below 100k ohms. The resistance in the system should normally display on the screen , you may need to download a manual. But most are fairly simple. Ideally this should be in no less than 500K ohms on small to medium system, on a damp day. When it is dry probably 10 M ohms You will need an electrician to check the circuits though [/QUOTE]
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solar panel wiring checks / repairs
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