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Student & Learning Zone - City & Guilds
Table 54.7 (p130 17th)
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<blockquote data-quote="tom79" data-source="post: 77806" data-attributes="member: 5127"><p>Hi there,</p><p></p><p>I might be having a silly moment but, can someone please help me understand table 54.7</p><p></p><p>I understand what it is showing I think, it is telling me what is the minimum earth size I can use on something being earthed (protective conductor not bonding)</p><p></p><p>But, I cant work out this table, assuming the line/earth conductor are of the same material...</p><p></p><p><strong><em>What is the C.S.A of a protective conductor selected from table 54.7 where the line conductor has a csa of...</em></strong></p><p></p><p><strong><em>1) 6mm2</em></strong></p><p></p><p><strong><em>2) 25mm2</em></strong></p><p></p><p><strong><em>3) 50mm2</em></strong></p><p></p><p>and how do you work it out?</p><p></p><p> headbang</p></blockquote><p></p>
[QUOTE="tom79, post: 77806, member: 5127"] Hi there, I might be having a silly moment but, can someone please help me understand table 54.7 I understand what it is showing I think, it is telling me what is the minimum earth size I can use on something being earthed (protective conductor not bonding) But, I cant work out this table, assuming the line/earth conductor are of the same material... [B][I]What is the C.S.A of a protective conductor selected from table 54.7 where the line conductor has a csa of...[/I][/B] [B][I]1) 6mm2[/I][/B] [B][I]2) 25mm2[/I][/B] [B][I]3) 50mm2[/I][/B] and how do you work it out? headbang [/QUOTE]
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Student & Learning Zone - City & Guilds
Table 54.7 (p130 17th)
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