Re: How much current safe for 30m extension?

From: John Rumm (see.my.signature_at_nowhere.null)
Date: 02/13/05 

Date: Sun, 13 Feb 2005 15:17:11 +0000

Paul Miller wrote:

> The big problem is going to be earth loop impedance, I know it sounds
> trivial
> because it will work fine, but you did quote a PSC figure of 120A......must
> be
> a TT instalation. Please make sure you have a RCD on this circuit..

If you do the sums for 1mm sq cable that is the PSC you get *without*
including the supply impedance - it only gets worse in reality.

(not sure what significance the supply being TT would have on PSC mind you) 

-- 
Cheers,
John.
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