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Consumer unit installation help
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 507632" data-attributes="member: 250"><p>Fitting a "shed" CU on the end of a cable that is supplied from a 13A spur off a house socket circuit, is just a waste of time, money and space IMHO..</p><p></p><p>(bit like using an umbrella indoors when its raining outside... </p><p></p><p>or wearing a crash helmet while walking the dog!</p><p></p><p>whilst neither will do any harm.. they are both completely pointless)</p><p></p><p>It will not allow anymore protection or capacity as this is limited by the circuit it is supplied from..</p><p></p><p>It will be pot luck if the House RCD or Shed RCD trips first.</p><p></p><p>A 32A MCB from a 13A cartridge fuse will be useless</p><p></p><p>a 6A MCB from a 13A cartridge fuse possibly may have occasional functionality.. </p><p></p><p>All you need is a 5A or 3A fused spur in the shed for the lights..</p><p></p><p>the rest of the sockets can just stay supplied from the 13A spur feeding the whole shed..</p><p></p><p>A cables capacity is limited by its physical construction, length and installation method.</p><p></p><p>Fuses are selected to protect the cable from overload damage.</p><p></p><p>You cannot just randomly remove or replace fuses without confirming the cables connected have sufficient capacity..</p><p></p><p>You have not told us what size your shed cable is or how long it is..</p><p></p><p>so its impossible to guess what options you may or may not have to alter the supply capacity to the shed..</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 507632, member: 250"] Fitting a "shed" CU on the end of a cable that is supplied from a 13A spur off a house socket circuit, is just a waste of time, money and space IMHO.. (bit like using an umbrella indoors when its raining outside... or wearing a crash helmet while walking the dog! whilst neither will do any harm.. they are both completely pointless) It will not allow anymore protection or capacity as this is limited by the circuit it is supplied from.. It will be pot luck if the House RCD or Shed RCD trips first. A 32A MCB from a 13A cartridge fuse will be useless a 6A MCB from a 13A cartridge fuse possibly may have occasional functionality.. All you need is a 5A or 3A fused spur in the shed for the lights.. the rest of the sockets can just stay supplied from the 13A spur feeding the whole shed.. A cables capacity is limited by its physical construction, length and installation method. Fuses are selected to protect the cable from overload damage. You cannot just randomly remove or replace fuses without confirming the cables connected have sufficient capacity.. You have not told us what size your shed cable is or how long it is.. so its impossible to guess what options you may or may not have to alter the supply capacity to the shed.. [/QUOTE]
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