Thank you! This is a very big help. I would say my run is about 90' which is pretty long. I think I will switch out the wire. One other question with the Tub having a GFCI plug, does it also need a 20amp GFCI breaker at the panel?
I have a 220 line that used to be used for a pool filter that is no longer being used. I should be able to use this. I will check to see about converting the Prodigy 110 tub to a 220. If all I need to do is purchase a GFCI sub panel and run new wires from the new panel to the tub, it may be the best solution.