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How Many GFCI Circuits Does My Walk-In Tub Need?

Updated September 2026

▶Glossary5
  1. Likely Causes
  2. What to Check, in Order
  3. When to Open a Ticket
  4. Related Guides
  5. Common Questions

How many GFCI circuits does the tub need? Count the labeled cords on your tub, because every one of them needs its own dedicated 20 amp, 120 volt GFCI protected circuit that shares nothing with any other appliance. One line covers hydro only, air only, or hydro plus air. Two lines cover hydro plus microbubble, hydro plus foot massage, and the heated seat variants. Three lines are needed on the ShaK, the Big4One and the two seat tubs with the full package. The first thing to check is the sticker on each cord: on a two line tub they read Line 1 20 Amp and Line 2 20 Amp. A soaking tub with no pumps needs no outlet at all, because the drains are gravity driven.

Likely Causes

  • Not knowing the package. The line count follows the pumps and options, not the model name.
  • Both plugs on one GFCI. Two labeled cords on one circuit trip the breaker as soon as the second pump starts.
  • A 15 amp line where 20 amps is specified. It can work on some lighter packages, but 20 is the published standard.
  • Doubling up protection. One GFCI, at the breaker or at the receptacle, is sufficient.

What to Check, in Order

  1. Count the labeled cords on the tub, or read the package sheet packed with it. Each cord equals one dedicated 20 amp GFCI circuit. The model by model table is in electrical requirements by model.
  2. Match your package to the count. Hydro only, air only or hydro plus air is one line. Add microbubble, independent foot massage or a heated seat and you are at two. ShaK, Big4One and two seat full packages are three.
  3. Choose where the GFCI sits. Your electrician can put it at the breaker or at the receptacle; one or the other is sufficient. Keep other appliances at least 3 feet from the tub. See common electrical questions.
  4. Place the outlets under the seat area, inside or directly behind the equipment compartment, so the pump and heater cords reach without extensions. See outlet placement and cord reach.
  5. Check the plug type. Some master control boxes carry a 20 amp plug with one blade turned sideways, which needs a 20 amp receptacle. Which cord plugs where is in cords, control boxes and connections after install.
  6. Ask for the diagram. The team can email the electrical diagram for your model so your electrician has the count and outlet location before rough in.
Ella's Bubbles: Proper Electrical Installation For Your Walk-In Tub
Chapters in this video
  1. 0:00 Electrical Components Clearly Marked The video explains the electrical requirements for installing an Ella's Bubbles walk-in tub, showing how components are clearly marked and accessible.
  2. 0:31 Dedicated GFCI Protected Outlets The contractor connects the tub to the home's power supply, emphasizing the need for dedicated GFCI protected outlets and breakers.
  3. 0:57 Finding Electrical Requirements Online The video directs viewers to the Ella's Bubbles website to find detailed electrical requirements based on their specific tub model and jetting packages.
  4. 1:28 Plug In and Enjoy After proper installation, the tub is ready to be plugged in, and technical support is available for any questions.

The video explains that the electrical lines are labeled at the factory for easy identification, that dedicated GFCI protected outlets are required, and that the Jetting Packages tab on the Compare Ella Walk-In Tubs page at ellasbubbles.com lists how many plugs and lines each tub needs. Watch: Ella's Bubbles: Proper Electrical Installation For Your Walk-In Tub with chapters and a full transcript.

When to Open a Ticket

If you want the exact count confirmed before your electrician runs wire, open a ticket at ellasbubbles.com/support with your model, the therapies and options on your order, and a photo of the cord labels if the tub has arrived. Your Ella dealer or the team at (800) 480-6850 can send the electrical diagram for your configuration.

Common Questions

Can both plugs go on one GFCI outlet?
No, both plugs cannot go on one GFCI outlet. Each labeled cord on your Ella's Bubbles walk-in tub requires its own dedicated 20 amp, 120 volt GFCI protected circuit that shares nothing with any other appliance. Attempting to connect two labeled cords to a single circuit will cause the breaker to trip as soon as the second pump starts.
Do I need a GFCI breaker and a GFCI outlet?
One or the other is sufficient; you do not need both a GFCI breaker and a GFCI outlet for your Ella's Bubbles walk-in tub. The warranty requires GFCI protection on each dedicated circuit but does not specify whether it should be at the breaker or at the receptacle. Your electrician can choose the placement that best suits your electrical panel and local building codes.
Is 15 or 20 amps the right breaker for my tub?
Twenty amps is the published standard for the breaker size for every Ella's Bubbles walk-in tub with pumps. While a 15 amp line can work on some lighter packages, and the Flow model or a soaking tub with only a heated seat are specified at 15 amps, 20 amps is generally recommended. Always ensure each dedicated circuit is 20 amp, 120 volt GFCI protected.
Does the heated seat need a third GFCI circuit?
No, a heated seat does not need a third GFCI circuit by itself. Adding a heated seat to a single-seat hydro package moves it into the two-line category, requiring two dedicated 20 amp, 120 volt GFCI protected circuits. Three lines are only needed for specific full packages, such as the ShaK, the Big4One digital full package, and the two-seat full package.
Does a soaking tub need an outlet at all?
No, a soaking tub with no pumps does not need an outlet at all because its drains are gravity driven. However, if the optional heated seat is added to a soaking tub, that alone will require a dedicated 15 amp, 120 volt GFCI protected line. Always check the package sheet or cord labels to confirm your specific tub's electrical requirements.

About this guide. Answers in the Ella’s Bubbles Support Center are compiled from real conversations with tub owners, our technicians’ notes and the product documentation, then reviewed by our team. Tub models and options have evolved over the years, so a detail here may differ slightly from your exact tub. If something looks different on yours, send us your serial number and a specialist will confirm it for your model.

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