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<blockquote data-quote="binky" data-source="post: 528318" data-attributes="member: 490"><p>you want to be feeding energy to the 'grid side' of the RCDs and MCBs, so Live and neutral are 'upstrem of the RCDs. That way if the RCD trips coz you stuck a wet finger in a socket (please don't try doing that) it isolates you from the solar energy - the RCDs are twin pole and isolate Live and Neutral when tripped.</p><p></p><p>The solar and battery will need their own MCB - there's some debate about RCDing such ccts, under the new regs update we are suppossed to RCD (or use an RCBO to combine RCD and MCB protection into a single spare way) every circuit. Personally I think that is uneccessary as you can't plug any appliances into that cct , and it's acceptable to 'risk assess' a cct for RCD requirement. Solar inverters tend to have RCD protection for the AC side built in anyway. I also don't like RCD protection on fridges and freezers, so if doing a full rewire, I supply them with a dedicated cct - for some strange reason Freezers like to trip RCDs whilst you are on holiday!</p></blockquote><p></p>
[QUOTE="binky, post: 528318, member: 490"] you want to be feeding energy to the 'grid side' of the RCDs and MCBs, so Live and neutral are 'upstrem of the RCDs. That way if the RCD trips coz you stuck a wet finger in a socket (please don't try doing that) it isolates you from the solar energy - the RCDs are twin pole and isolate Live and Neutral when tripped. The solar and battery will need their own MCB - there's some debate about RCDing such ccts, under the new regs update we are suppossed to RCD (or use an RCBO to combine RCD and MCB protection into a single spare way) every circuit. Personally I think that is uneccessary as you can't plug any appliances into that cct , and it's acceptable to 'risk assess' a cct for RCD requirement. Solar inverters tend to have RCD protection for the AC side built in anyway. I also don't like RCD protection on fridges and freezers, so if doing a full rewire, I supply them with a dedicated cct - for some strange reason Freezers like to trip RCDs whilst you are on holiday! [/QUOTE]
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