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Do-It-Yourself (DIY) Question & Answer Forum
Two supplies to a building
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<blockquote data-quote="Phoenix" data-source="post: 186964" data-attributes="member: 8133"><p>Not sure the worst case value thing is relevant here... its more to do with if you have a backup generator feeding the installation (i always limitation it on a PIR, but draw attention to where the zs values are 'tight enough that there 'could' be an issue)</p><p></p><p>But this is like two installations, so would be two EICs (would be if they were both new anyway), so no issue there, only one figure for each box, but two separate certs as it were</p><p></p><p>Both supplies are three phase, yes, existing is 400A, proprosed additional supply is 200A (its a big kitchen!)</p></blockquote><p></p>
[QUOTE="Phoenix, post: 186964, member: 8133"] Not sure the worst case value thing is relevant here... its more to do with if you have a backup generator feeding the installation (i always limitation it on a PIR, but draw attention to where the zs values are 'tight enough that there 'could' be an issue) But this is like two installations, so would be two EICs (would be if they were both new anyway), so no issue there, only one figure for each box, but two separate certs as it were Both supplies are three phase, yes, existing is 400A, proprosed additional supply is 200A (its a big kitchen!) [/QUOTE]
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Two supplies to a building
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