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PV on metal corrugated roof - earthing question
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<blockquote data-quote="Ucatchmydrift" data-source="post: 540919" data-attributes="member: 35106"><p>I should imagine a 4mm armoured cable would be ok to power the inverter, (4mm should be good for 6kw) but depends on how many kw your inverter is.. Mines a 3kw and has a 4mm armoured supplying it which is plenty big enough. You may find that the inv draws a constant draw from the grid when its wired up, mine does, a constant annoying 10w. So i fitted a contactor switched via a wifi smart plug to control charging battery banks via an app at off peak times only. Im now trying to get it all linked to home assistant so i can automate the battery charging by pulling data from the met office to put the right amount of charge into the battery banks depending on current soc and what the weather will be doing the next day etc. You should check out diysolarforum.com, its the best place for diyers like us <img class="smilie smilie--emoji" loading="lazy" alt="😜" title="Winking face with tongue :stuck_out_tongue_winking_eye:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f61c.png" data-shortname=":stuck_out_tongue_winking_eye:" /> - lots of extremely knowledgeable diy solar people on there... </p><p></p><p>Heres my build thread (needs updating as been busy since):</p><p></p><p>[URL unfurl="true"]https://diysolarforum.com/threads/first-build-3kw-panels-3kw-inv-14-4kw-storage.52783/#post-672398[/URL]</p></blockquote><p></p>
[QUOTE="Ucatchmydrift, post: 540919, member: 35106"] I should imagine a 4mm armoured cable would be ok to power the inverter, (4mm should be good for 6kw) but depends on how many kw your inverter is.. Mines a 3kw and has a 4mm armoured supplying it which is plenty big enough. You may find that the inv draws a constant draw from the grid when its wired up, mine does, a constant annoying 10w. So i fitted a contactor switched via a wifi smart plug to control charging battery banks via an app at off peak times only. Im now trying to get it all linked to home assistant so i can automate the battery charging by pulling data from the met office to put the right amount of charge into the battery banks depending on current soc and what the weather will be doing the next day etc. You should check out diysolarforum.com, its the best place for diyers like us 😜 - lots of extremely knowledgeable diy solar people on there... Heres my build thread (needs updating as been busy since): [URL unfurl="true"]https://diysolarforum.com/threads/first-build-3kw-panels-3kw-inv-14-4kw-storage.52783/#post-672398[/URL] [/QUOTE]
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PV on metal corrugated roof - earthing question
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