Is there any real safety advantage of a full sized earth over Twin & earth UK style cable?
In most instances once there's a path to earth at all it will trip an RCD pretty much instantaniously.
I can see it being more of an issue where fuses were the sole means of protection as it was more likely that an earth/ground cable would need to survive a high current until the fuse blows.
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I realise that a larger earth cable would potentially reduce impedence etc.. but is it actually that vital?
[This message has been edited by djk (edited 04-06-2004).]
