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Do-It-Yourself (DIY) Question & Answer Forum
New Supply or radial?
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<blockquote data-quote="binky" data-source="post: 478018" data-attributes="member: 490"><p>if the meter TCD is 300 mA I think I would leave that as it is rather than fit a 100 mA TD. From memory as I haven't got my regs book to hand, 300mA is acceptable for the sub-mains, but obviously once you get into the buildings 30mA is needed. </p><p></p><p>I get the idea of dropping th cable size to make running through the building easier, but I think I would rather achieve this with an external meter cabinet and a switch-fuse. The 3m thing applies to meter tails as they do not have an earth incorporated into the cable.</p></blockquote><p></p>
[QUOTE="binky, post: 478018, member: 490"] if the meter TCD is 300 mA I think I would leave that as it is rather than fit a 100 mA TD. From memory as I haven't got my regs book to hand, 300mA is acceptable for the sub-mains, but obviously once you get into the buildings 30mA is needed. I get the idea of dropping th cable size to make running through the building easier, but I think I would rather achieve this with an external meter cabinet and a switch-fuse. The 3m thing applies to meter tails as they do not have an earth incorporated into the cable. [/QUOTE]
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