The message
from "Alan Holmes" contains these words:

No electrical wire or connection should be plastered over.

Care to expand on this point?

The house gets sold, the new owner decides to hang some pictures, bangs a
nail into the plaster and through the wire.

Not if the wires follow the routes permitted in the rules and the
wielder of the hammer is aware of the rules.

--
Skipweasel
Pay no attention to that man behind the curtain.