Total Noob questions. First lighting install. Using Light the Nite 150w transformer. I'm installing a new system with a long run in back and short run in front. I will use a T connection to separate the front and back. My question is, there is a 50' section of 14/2 wire already buried. If I connect the transformer (60' 10/2) to the existing (50' 14/2) and run another (60' 10/2) will that minimize the resistance from using the bigger wire on either side? Or will I have to calculate the whole thing on 14/2 wire? Also for the front being tied into the back system, I still calculate the total runs of wire front and back right?