You could make the entire yard a single protected zone or you could
protect each individual turnout. In between is everything you can
With a yard, if you get a short, you will likely know why. Chances
are you are in the middle of a movement and are staring right at the
cause of the short.
So what purpose is served by short protection? Probably the most
useful purpose is to not shut down other operators. So protecting
the whole yard as a single unit is probably enough. If you have
more than one yard operator or a double-ended yard being operated
from both ends, maybe protecting the yard as two zones is
Probably the second most important function served by short
protection is limiting the amount of railroad that is rendered
inoperable. Suppose you have a short and can't identify why. Or
you found the problem, but the middle of an operating sessions isn't
the time to fix it. So maybe you break your double-ended yards into
say four zones. Now if you have a short you can't fix, it only
immobilizes a portion of your yard.
You could certainly protect each individual track, but that results
in a rats nest of wiring and may not be worth it.
I hope these thoughts help.