My start on a garden railroad has about 125 ft of track. Plan to run a continuous bus bar from a 10 Amp power supply with 10 THHN. Road bed is supported by an HDPE system as depicted in Garden RR magazine. Track is all LGB brass with split jaw fasteners at every track junction. Two R1 curves and a free form using R3 curves. Straight sections are mostly four ft LGB track sections. How far apart should I space power taps from the bus to the track?