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Student & Learning Zone - City & Guilds
How Fast Should A Fuse Trip If Cannot Let Go?
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<blockquote data-quote="msb2003" data-source="post: 324485" data-attributes="member: 3816"><p>Forum won`t let me insert the image!!!</p><p></p><p>When you think about it, it is only what we do with TT circuits, as we cannot achieve the Zs values due to the high Ze path of the Stake and general mass of earth.</p><p></p><p>Values are calculated to ensure touch voltage does not exceed 50V eg 50V / 30mA = 1667 Ohms, hope this helps</p></blockquote><p></p>
[QUOTE="msb2003, post: 324485, member: 3816"] Forum won`t let me insert the image!!! When you think about it, it is only what we do with TT circuits, as we cannot achieve the Zs values due to the high Ze path of the Stake and general mass of earth. Values are calculated to ensure touch voltage does not exceed 50V eg 50V / 30mA = 1667 Ohms, hope this helps [/QUOTE]
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Student & Learning Zone - City & Guilds
How Fast Should A Fuse Trip If Cannot Let Go?
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