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Do-It-Yourself (DIY) Question & Answer Forum
Exporting earth on TT system
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<blockquote data-quote="steptoe" data-source="post: 26330" data-attributes="member: 7"><p>6mm will be more than enough, how big is your Neutral tail? have you done a voltage drop calc for PFC? and also for Ze?</p><p></p><p>do you think the fault on the 6mm will never exceed the current your neighbour will put back through your water main?</p><p></p><p>these things will all come to you in a court of law, that is why I always say 10mm, you have 'taken all reasonable precautions' , 6mm will be laughed at in court, and you will save how many pounds?</p></blockquote><p></p>
[QUOTE="steptoe, post: 26330, member: 7"] 6mm will be more than enough, how big is your Neutral tail? have you done a voltage drop calc for PFC? and also for Ze? do you think the fault on the 6mm will never exceed the current your neighbour will put back through your water main? these things will all come to you in a court of law, that is why I always say 10mm, you have 'taken all reasonable precautions' , 6mm will be laughed at in court, and you will save how many pounds? [/QUOTE]
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Exporting earth on TT system
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