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Green Renewable Energy Forum
Solar PV Forum
Increased earth leakage on installs with Solar PV
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<blockquote data-quote="ProDave" data-source="post: 268194" data-attributes="member: 6969"><p>Many inverters are transformerless, so any leakage in the dc cabling will contribute to leakage on the mains.</p><p></p><p>but the more worrying thing from your post, is by implication, the Solar PV installer has fed the inverter input to an MCB sharing one of your RCD's.</p><p></p><p>This is plainly WRONG as has been discussed here many times, because in the event of an RCD trip, the inverter can continue feeding power for up to 5 seconds, so your RCD will not have provided isolation (within the specified times)</p><p></p><p>If that is the case, get the solar PV installer back to correct it, and either feed in via it's own rcbo or via a seperate mini CU.</p></blockquote><p></p>
[QUOTE="ProDave, post: 268194, member: 6969"] Many inverters are transformerless, so any leakage in the dc cabling will contribute to leakage on the mains. but the more worrying thing from your post, is by implication, the Solar PV installer has fed the inverter input to an MCB sharing one of your RCD's. This is plainly WRONG as has been discussed here many times, because in the event of an RCD trip, the inverter can continue feeding power for up to 5 seconds, so your RCD will not have provided isolation (within the specified times) If that is the case, get the solar PV installer back to correct it, and either feed in via it's own rcbo or via a seperate mini CU. [/QUOTE]
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Increased earth leakage on installs with Solar PV
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