The Prodigy comes with a 15' long cord, but you should only count on being able to use about 12' of it.
There is a very special plug and cover combo that comes with your spa. PN 34986. Your dealer should give it to you now so you can have it installed by your electrician - that way it's ready for 'plug and play.'
Allow at least 12 hours for heat up, BTW.
You'll enjoy this tub. I sell a pack of 'em - and they work well.