Common Electrical Questions: 15 or 20 Amps, One Circuit or Two, GFCI at the Outlet or the Breaker, Cord Labels and Diagrams

The walk-in tub electrical requirements for an Ella tub come down to this: every tub with pumps runs on dedicated 20 amp, 120 volt, GFCI-protected circuits, and the number of circuits depends on the jetting package you chose. A 15 amp line is correct in only two cases: the Ella Flow, whose outlet is specified at 15 amps, and a soaking tub whose only electrical item is the heated seat and backrest. Everything else needs 20 amps, and any package with independent foot massage or MicroBubbles always needs a second line. This article answers the electrical questions installers and homeowners ask most often. The full model-by-model circuit table lives in the electrical requirements by model article, so it is only summarized here.

Is 15 Amps Enough?

No, except for the Flow and the soaking-with-heated-seat case above. Where a 15 amp circuit was wired for a standard hydro tub, the control box overloads the breaker. The hydro pump and its inline heater share one plug, and the heater only runs while the water pump is on, so a single 20 amp line carries a hydro-only tub comfortably. A tub without pumps is a different story: the soaking-only walk-in tubs article explains why a soaker needs no dedicated circuit at all unless the heated seat is added.

Is It 120 Volts or 240 Volts?

All Ella walk-in tubs run on standard 110/120 volt North American household power. Spec sheets print the figure as 110/120V, 115V 60Hz or 115/120V 60Hz depending on the model, and all of these describe the same ordinary household circuit. No Ella tub needs a 240 volt feed.

One 20 Amp Circuit or Two?

Count the pumps and options in your package rather than guessing by model name. In short: hydro alone, or air plus hydro on a single-seat tub, runs on one dedicated 20 amp GFCI circuit. Add independent foot massage or MicroBubbles and you need a second circuit, always. A hydro plus independent foot massage tub, for example, requires two 20 amp breakers, one per labeled line. The full air, hydro, foot and MicroBubble package on the Shak and Big4One, and the full package on the two-seat tubs, needs three. The tub cannot share a circuit with any other appliance, and no other appliances should be placed within 3 feet of the tub. Which combinations a given model can carry is covered in therapy combinations by model.

GFCI at the Outlet, at the Breaker, or Both?

One or the other is sufficient. The warranty requires GFCI protection on the circuit and does not specify whether that protection sits at the receptacle or at the breaker. An older electrical video mentions both, but both are not required. Your licensed electrician can choose the location that suits your panel and local code. Whichever you use, the circuit must be dedicated to the tub.

Is a Diagram Packed in the Crate? What Do the Cord Stickers Mean?

Electrical diagrams are not shipped inside the tub. Instead, Ella's Bubbles labels the power cords themselves at the factory. On a two-line tub the cords carry stickers reading "Line 1 20 Amp" and "Line 2 20 Amp" so the electrician can see at a glance which cord belongs on which circuit. The per-package electrical requirements, including how many plugs and lines each tub needs, are published on the Compare Ella Walk-In Tubs page under the Jetting Packages tab, and the team can send the wiring diagram for your exact configuration when you open a ticket. Once the outlets exist, which cord plugs where shows what each control box and cord connects to.

This video covers the ground rules: every pump, heater and control is ETL certified and clearly marked; the connection from the tub to the house must be made on dedicated GFCI-protected outlets; the tub cannot share a circuit with any other appliance; and the amperage provided at the panel must match the number and type of components in your package. Watch: Ella's Bubbles: Proper Electrical Requirements For Installation with chapters and a full transcript.

Where Do the Outlets Go?

Inside the equipment compartment, under the seat area, within reach of the labeled cords and inside the service access the installer must provide for the plumbing and electrical. Cords are short by design and extension cords are never used, so the outlet comes to the cord rather than the other way round. Do not insulate around the tub equipment, since the pump and electronics need air to stay cool. The service access planning article covers apron panels and wall access.

Grounding

Ella tubs ship with ground wires on every electrical component and on the tub frame. The installer must secure a proper ground connection to the frame and components in line with local and state electrical codes. A grounded frame is also one of the items the installer initials on the warranty activation checklist. Watch: Proper Grounding of Your Walk-In Tub with a full transcript.

Where the Third Pump Plugs in

On triple-massage tubs such as an Ultimate with three pumps, the control box runs the air pump and the water pump, while the third pump (the independent foot massage) is powered together with the inline heater on its own line. If one massage does not run, check that its pump and cord are actually plugged in and powered. The control box has a green LED; when it is lit, power is reaching the box, which is the first thing to confirm when nothing responds. Watch: Proper Electrical Connections with chapters and a full transcript.

Related Guides

• Why Does the Digital Display Stay Lit and Can I Turn It Off?
• What to Do When a Tub Power Cord Is Too Short to Reach the Receptacle
• Where to Find Installation Videos and Written Instructions for Your Walk-In Tub
• What Voltage Does an Ella Walk-In Tub Need, and Can It Be Built for 220 to 240 Volts Abroad?
• T-Shaped Plug Does Not Fit the Outlet: The 20 Amp Plug on Your Walk-In Tub Cord
• Are the Heated Seat and In-Line Heater Covered by Ella's Warranty?

Common Questions

For anything specific to your model, serial number or jetting package, open a ticket at ellasbubbles.com/support.