Have you ordered a hot tub and need an electrical system in place to power up your spa? We are here to help. A hot tub generally requires a 50-amp dedicated circuit with a spa disconnect. A disconnect is a switch that allows you to cut off power in the event of an emergency. The disconnect must be at least 5 feet from the spa, within line of sight, and GFCI protected. A 120v Convenience GFCI plug is also required within 10 to 20 feet of the Jacuzzi.