John H posted:THHN wire has very inflexible insulation. It works well in conduit and under layout runs, but not so well under track or tight spaces such as switch panels.
The 14 awg copper wire at the auto stores or big box store would be a better choice for flexibility. The THNN has a slick coating on it also for protection or less friction when pulling through a conduit which adds to the stiffness as well.
