i am running dcc i have no revirse loop but a good number of switches. i am useing the atlas coad 100 mark 3 #6 switches thay have insulated frogs do i still need insulated rail joiners so thay dont short out? there is one part on my layout that my sideing track croses over my main line but i used switches insted of a crossover do thay need to be insulatd or will the insulated frog do the job for me? and also how fair apart do i put in my power feeders in ? sorry for all the qustions this is my frist time wireing for dcc and haveing a layout this big 14'x12'.