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Electrical work contracted under C K ELECTRIC · CSLB Lic. #354550 (C-10) · Farmer Works Electric license in process

NEC 680.71 · Homes

Hydromassage bathtub circuits and GFCI

A hydromassage (jetted) bathtub needs its own individual branch circuit and a readily accessible GFCI. Receptacles of 125 V, 30 A or less within 6 ft of the tub need GFCI protection too.

Plan view of a jetted tub on its own GFCI circuit, with a 6 ft zone from the tub inside walls where 125 V receptacles need GFCI.
Measure the 6 ft horizontally from the inside walls of the tub, and check every receptacle inside that distance. Diagram: Farmer Works Electric, free to share under CC BY 4.0 · Download PNG · How to credit

What the code requires

A hydromassage bathtub, often called a jetted tub, and its electrical components must be on individual branch circuit(s) and protected by a readily accessible GFCI.

All 125-V, single-phase receptacles rated 30 A or less within 6 ft (1.83 m) horizontally of the tub's inside walls also need GFCI protection.

On the job

  • The tub must be on its own circuit, not shared with other bathroom loads.
  • Your inspector will check that the GFCI protecting the tub is readily accessible.
  • Check every receptacle within 6 ft of the tub, measured horizontally from its inside walls.
Bathroom vanity with a sink, mirror and medicine cabinet next to a tub
Bathroom vanity and sink (representative stock photo).

Related sections

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Electrical work contracted under C K ELECTRIC · CSLB Lic. #354550 (C-10) · Farmer Works Electric license in process