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consumer units,
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 14996" data-attributes="member: 250"><p>When considering all these circuits and changes etc.. Get back to the basic design consideration..</p><p></p><p>if I remember we used to be taught..</p><p></p><p>1/ Calc load current</p><p></p><p>2/ Select protective device</p><p></p><p>3/ Consider cable installation method</p><p></p><p>4/ Select suitable cable size/capacity</p><p></p><p>5/ Ensure max volt-drop complied with</p><p></p><p>6/ Check for shock protection Max Zs</p><p></p><p>7/ Check other correction factors e.g. high ambient temp environments.</p><p></p><p>If all these satisfied then each final circuit should be ok!</p><p></p><p>Also need to check your MAX demand for whole installation is still ok for incoming cable size main cut out rating?</p><p></p><p>(unlikely to exceed in domestic environment) but you do need to check it to put on your electric certificate!!</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 14996, member: 250"] When considering all these circuits and changes etc.. Get back to the basic design consideration.. if I remember we used to be taught.. 1/ Calc load current 2/ Select protective device 3/ Consider cable installation method 4/ Select suitable cable size/capacity 5/ Ensure max volt-drop complied with 6/ Check for shock protection Max Zs 7/ Check other correction factors e.g. high ambient temp environments. If all these satisfied then each final circuit should be ok! Also need to check your MAX demand for whole installation is still ok for incoming cable size main cut out rating? (unlikely to exceed in domestic environment) but you do need to check it to put on your electric certificate!! [/QUOTE]
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