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Wiring diagram with cable size/spec
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<blockquote data-quote="binky" data-source="post: 523918" data-attributes="member: 490"><p>Keep solar off main board, that can be done by tapping into meter tails with meter tail blocks and install a non-RCd protected mini CU. Cable to garage, your solar at 6kW is going to be around 24Amps which could be done with 2.5mm cable, however I would run a 6mm or 10mm cable as you may change plans for the garage, and the cost of the cable is not much more. Within the garage another mini CU, RCBOs for the other circuits, MCB for the solar - inverters and RCDs don't mix well. DC cabling to the roof, not so easy to spec, but I would run 4off 4mm solar cable runs - mark the ends with tape or the like so you know which one is which. Provided you can use cavities and keep cable 50mm away from any wall surface, you wont have to worry about 'protection' for the cables. Do not run through insulation. It may be easier to use 25mm conduit on the external walls to the attic/ roof, it may also be something you leave to the solar installers.</p></blockquote><p></p>
[QUOTE="binky, post: 523918, member: 490"] Keep solar off main board, that can be done by tapping into meter tails with meter tail blocks and install a non-RCd protected mini CU. Cable to garage, your solar at 6kW is going to be around 24Amps which could be done with 2.5mm cable, however I would run a 6mm or 10mm cable as you may change plans for the garage, and the cost of the cable is not much more. Within the garage another mini CU, RCBOs for the other circuits, MCB for the solar - inverters and RCDs don't mix well. DC cabling to the roof, not so easy to spec, but I would run 4off 4mm solar cable runs - mark the ends with tape or the like so you know which one is which. Provided you can use cavities and keep cable 50mm away from any wall surface, you wont have to worry about 'protection' for the cables. Do not run through insulation. It may be easier to use 25mm conduit on the external walls to the attic/ roof, it may also be something you leave to the solar installers. [/QUOTE]
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Wiring diagram with cable size/spec
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