As a followup to my question, I guess the concept or the question is
no different than if it referred to a dipole instead of radials on a
vertical. The concern is protection from the high voltage at the end
of the wire, and the potential of it causing a fire.
So it is really a very general question, considering the numbers of
antennas hams are having to disguise or hide inside their homes these
days.

Rick K2XT