@Matt Bollinger posted:@gunrunnerjohn do i have to buy 3? one for each track? I have a doubletrack mainline and a yard.
You are protecting transformer feeds, so one for each separate transformer output.
@TomSuperO posted:ok $0.68 vs $50. i'm completely lost here. Sorry.
The two work in conjunction, so you need both for the best protection for each transformer output.