In article ,
sm_jamieson writes:

I reckon the cable runs under next doors path and hallway, then splits
both ways into the meter cupboard under the stairs. Anyone know what
depth electricity cable is usually installed (1930s house).

18" would be quite typical.

Of course, subsequent landscaping and building can change that.
My father managed to find his electricity cable just below the
front lawn ~50 years ago after landscaping to level the garden,
although fortunately it seems to have been laid inside a sewer
type pipe.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]