On 04/08/2020 12:56, Adam Funk wrote:
On 2020-08-04, John Rumm wrote:

On 04/08/2020 10:59, No Name wrote:

I happen to have a 3 core 10mm2 SWA run between the house integral
garage and the metal wood shed and metal framed greenhouse.
....
However there are cases where it can be a less ideal choice. JW covered
the case where it gets too expensive, but there is also the case of a
building like a greenhouse where it is in effect impossible to maintain
a proper equipotential zone, since there is ready access to a local
earth (i.e. you are likely standing on it!) that you can't bond to your
equipotential zone.

Just curious: how does that compare with the local earth you can stand
on in a cellar with a bare dirt floor?

Similar situation..., (although properties old enough for a bare earth
cellar floor did not likely have TN-C-S head ends either)


--
Cheers,

John.

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