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Green Renewable Energy Forum
Solar PV Forum
Cable size between inverter and consumer unit
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<blockquote data-quote="Phoenix" data-source="post: 540894" data-attributes="member: 8133"><p>Generally 4mm is used as the starting point for domestic PV, but has the potential to require larger; current carrying capacity on a 4mm for a 3.6kw (typo I'm guessing?) is unlikely is unlikely to be an issue, but volt drop could be depending on length, you should keep it to a minimum for the cable to a solar system, 1% for max volt drop sticks in my head, but don't know if thats specified anywhere or just considered good practice.</p><p></p><p>It can't share an RCD with anything else, best idea to to use cable type abd route that mean it doesn't require RCD, if not possible, then an RCBO on the mains switch controlled section of the board</p></blockquote><p></p>
[QUOTE="Phoenix, post: 540894, member: 8133"] Generally 4mm is used as the starting point for domestic PV, but has the potential to require larger; current carrying capacity on a 4mm for a 3.6kw (typo I'm guessing?) is unlikely is unlikely to be an issue, but volt drop could be depending on length, you should keep it to a minimum for the cable to a solar system, 1% for max volt drop sticks in my head, but don't know if thats specified anywhere or just considered good practice. It can't share an RCD with anything else, best idea to to use cable type abd route that mean it doesn't require RCD, if not possible, then an RCBO on the mains switch controlled section of the board [/QUOTE]
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Green Renewable Energy Forum
Solar PV Forum
Cable size between inverter and consumer unit
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