Alt. question

I am building a Long EZ and am the stage where I am ready to start the
engine installation and have a couple questions for the group. The
Alt. that I have is a small single wire 60 amp alt W/ a built in
regulator that I will be putting on a Lyc. 0-235 my quastions are as
follows. 1. Is there a way of turning the alt. off if the regulator
were to stick and continue to charge the batt. even though it were
fully charged? I have heard of this happeningand almost blowing up the
batt. I've also heard that even if I were to shut the voltage (12V)
off to the atl that it could still send a charge to the batt as long
as the engine is turning the pulley. 2. What size wire would be
recommended to carry the voltage from the alt. to the batt. that is
located in the nose of the plane (maybe 10-12').

Thanks for your suggestions.

Sky Bob
Brunswick, GA