In article ,
says...

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Yes, they don't join until they get to an exchange or at least a cabinet (mine
is to a cabinet since I have fibre internet to the cabinet), where there
probably is grounding.

If you have cable TV, is there a ground there?

Can't tell you about cable TV, we don't have it here, we all use aerials or
satellite dishes.

We have Virgin Media cable for BB can't be doing with the telly and its
underground via ducts and no earths anywhere..

Oh yes there is! (Well, it IS panto season!).

There is an earth rod in every cabinet - it's all run by
electrickery, after all, so you wouldn't want it floating!

However, at the point of entry into the house, there is an
isolator which passes the signal but prevents any nasties in
the house from damaging the equipment in the street.

Here's a typical example:

http://usr.audioasylum.com/images/1/...lland_CISP.jpg

--

Terry

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