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<blockquote data-quote="Davethsparky" data-source="post: 492191" data-attributes="member: 27165"><p>Bury a bare copper tape in the trench for an earth electrode and you should get a nice low Ra. </p><p></p><p>Off the top of my head I'd say 50mm sounds a bit on the small side. You'll want something like a 200A switch fuse (with 100A fuse) with cable box at the supply end and either a similar size isolator or a terminal box at the load end to reduce down to 25mm to connect to a CU. </p></blockquote><p></p>
[QUOTE="Davethsparky, post: 492191, member: 27165"] Bury a bare copper tape in the trench for an earth electrode and you should get a nice low Ra. Off the top of my head I'd say 50mm sounds a bit on the small side. You'll want something like a 200A switch fuse (with 100A fuse) with cable box at the supply end and either a similar size isolator or a terminal box at the load end to reduce down to 25mm to connect to a CU. [/QUOTE]
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