Hot tub wiring uses #6 AWG or #8 AWG copper conductors (depending on tub amperage), typically run in PVC or rigid metal conduit, and protected by a 50- or 60-amp GFCI breaker. Aluminum is sometimes used for longer runs but copper is preferred. The exact wire size is determined by the tub’s nameplate amperage and the distance from the panel.

Typical specifications

  • 50A circuits: #6 AWG copper
  • 60A circuits: #4 AWG copper
  • Conduit (PVC, EMT, or RMC) usually required
  • GFCI protection — 50A or 60A breaker
  • Disconnect within sight, 5–50 feet from tub
  • Bonding to surrounding metal where required

We size to your specific tub through our installations and remodels service.