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Solar pv batteries distance to CU
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<blockquote data-quote="revor" data-source="post: 509939" data-attributes="member: 23254"><p>25 mm tails are needed because the main incoming fuse is 80 or 100 amps so 25 mm has rating of 90 to about 110 amps depending on fix method. The onsite guide states minimum of 25 mm. Anything less of a cable could not take the current and would overheat and possibly blow before the company fuse went. So in this situation you would not use 16 mm tails on a 100 A fuse. So in what situation do you use 16 mm tails.?</p><p></p><p>All my main CU's of which there are 3 are 25 mm tails (reference c fixed) because they are all connected via a Henley block and through the meter to the incoming company fuse.</p><p></p><p>The inverter max output is 32 amps so using 6 mm cable is consistent with this (46 A method c.) The inverter feeds the privileged loads consumer unit (number 4) via grid / battery the consumer unit tails is protected by the inverter feed 32 AMP MCB and the changeover inverter feed in event of inverter being down is via a different 32 A MCB. </p></blockquote><p></p>
[QUOTE="revor, post: 509939, member: 23254"] 25 mm tails are needed because the main incoming fuse is 80 or 100 amps so 25 mm has rating of 90 to about 110 amps depending on fix method. The onsite guide states minimum of 25 mm. Anything less of a cable could not take the current and would overheat and possibly blow before the company fuse went. So in this situation you would not use 16 mm tails on a 100 A fuse. So in what situation do you use 16 mm tails.? All my main CU's of which there are 3 are 25 mm tails (reference c fixed) because they are all connected via a Henley block and through the meter to the incoming company fuse. The inverter max output is 32 amps so using 6 mm cable is consistent with this (46 A method c.) The inverter feeds the privileged loads consumer unit (number 4) via grid / battery the consumer unit tails is protected by the inverter feed 32 AMP MCB and the changeover inverter feed in event of inverter being down is via a different 32 A MCB. [/QUOTE]
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Solar pv batteries distance to CU
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