On 27/02/2014 18:40, tony sayer wrote:
In article , Nightjar
scribeth thus
....
... but undergrounding has problems of its own.

Like what?. In comparison to overhead?..

More difficult to upgrade. Can be damaged by ground movement. Prone to
getting digger shovels through them. Faults normally take a lot longer
to trace and repair (digger shovels excluded).

Colin Bignell