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Electrician Talk Forum
To Bond or not too Bond??
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<blockquote data-quote="binky" data-source="post: 463172" data-attributes="member: 490"><p>A house near me suffered a direct strike on the chimney. It tracked down through things like plastering corner metal thingies, arced across any gaps in that, jumped to floor, vapouried a piece of carpet and continued down thourgh the house. Did very little damge to loft conversion electrics - i had to replace 1 length of lighing cable. Bonding prevents the arcing which is what does the most damage and can cause fires ( at least thats the way I understand it).</p><p></p><p>SPDs - I've read the spec on these several times and they all talk about lighting strikes and big surges on mains, but do they give any protect against ' normal surges' like switching power stations On and Off and much smaller transient voltages that the grid is prone to? </p></blockquote><p></p>
[QUOTE="binky, post: 463172, member: 490"] A house near me suffered a direct strike on the chimney. It tracked down through things like plastering corner metal thingies, arced across any gaps in that, jumped to floor, vapouried a piece of carpet and continued down thourgh the house. Did very little damge to loft conversion electrics - i had to replace 1 length of lighing cable. Bonding prevents the arcing which is what does the most damage and can cause fires ( at least thats the way I understand it). SPDs - I've read the spec on these several times and they all talk about lighting strikes and big surges on mains, but do they give any protect against ' normal surges' like switching power stations On and Off and much smaller transient voltages that the grid is prone to? [/QUOTE]
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To Bond or not too Bond??
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