Earthing rod question

[NT]

12v is enough to overcome electrolytic potentials. Any effcetive earth rod is in soil that's always wet, even when the surface is dry.

NT

[John Rumm]

Not forgetting the internal resistance of the battery...

[John Rumm]

Which bit of the wiki in particular? Quite happy to go and reword things to make it clearer.

Well the section on electrode testing in the TT article was a direct lift of Andy's words as posted above - so perhaps the latter!

I suspect a diagram might help ;-)

[NT]

dont forget that 0.05 ohms

NT

[robgraham]

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Sorry John - I will admit to being old and therefore in some people's minds a bit dottled and slow, but also to having been an electronics engineer for all my career and dabbled in electrics all my life, and I'm afraid I found the description in the the 'other ' website totally clear whereas the Wiki one I struggled with. I think that struggle is evident from my earlier post on this matter too.

Rob

[John Rumm]

You did not really tell me what bits of it you found less than clear, so I had to use my initiative! ;-)

Rather than just repeat Whitfield's explanation (it was as straight lift from his book to which you linked), I have hopefully added a couple of points that he tends to gloss over, as well as expanding the general description. I added a couple of diagrams as well.

Could you have a look and see if this is any better?: