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Green Renewable Energy Forum
Solar PV Forum
New Solar PV design - split system (u/floor heating + domestic supply)
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<blockquote data-quote="binky" data-source="post: 523346" data-attributes="member: 490"><p>Rough numbers, it's 4amps per Kw, so 24 kw is 96 amps. Now I would be looking at sizing the inverters to suite your existing cables, buy there's a little problem with that, for solar we like 1% transmission losses, where as your existing cables will be specced for 3% or 5%. So we need to look at the actual cable sizes and hope someone got scared and over rated the cable sizes. It's also normal practice to undersize inverters, so an inverter rated as 6kw can be connected to say, 8kw of panels. I'll spare you the details of how that works for the moment as I'm quite a long way into a bottle of rum....<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:" /></p></blockquote><p></p>
[QUOTE="binky, post: 523346, member: 490"] Rough numbers, it's 4amps per Kw, so 24 kw is 96 amps. Now I would be looking at sizing the inverters to suite your existing cables, buy there's a little problem with that, for solar we like 1% transmission losses, where as your existing cables will be specced for 3% or 5%. So we need to look at the actual cable sizes and hope someone got scared and over rated the cable sizes. It's also normal practice to undersize inverters, so an inverter rated as 6kw can be connected to say, 8kw of panels. I'll spare you the details of how that works for the moment as I'm quite a long way into a bottle of rum....😜 [/QUOTE]
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New Solar PV design - split system (u/floor heating + domestic supply)
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