Medicine Cabinet With Outlet: Wiring, GFCI and Uses

Bathroom counters fill up fast with toothbrush chargers, shavers and hair tools, and each one needs a cord. A medicine cabinet with outlet moves that clutter behind the mirror door, where devices can charge out of sight and away from splashes. These cabinets have receptacles, and often USB ports, built into the interior, so you plug in, close the door and keep the counter clear.

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The catch is that an outlet inside a cabinet is still a bathroom receptacle, and it has to meet the same safety rules. That means the cabinet itself should be a listed unit tested by a recognized lab, the outlets must have GFCI protection, and the wiring should be connected by a licensed electrician. Most models are hardwired into a box in the wall rather than plugged in, which is exactly why the electrical side matters.

If you are planning a remodel or replacing an old cabinet, here is what these cabinets do, how they are powered, and what a safe installation looks like.

What Is a Medicine Cabinet With Outlet?

A medicine cabinet with outlet is a recessed or surface mount cabinet that includes one or more electrical receptacles on an interior side wall or shelf. Many add USB A or USB C ports for phones and electric toothbrushes. Some include a switched outlet that cuts power when the door closes, which can help with heat-generating devices, though you should still unplug hot tools.

Typical features include:

• One or two standard receptacles inside the cabinet box
• USB charging ports for small devices
• Integrated lighting, a mirror defogger, or both
• Adjustable glass shelves with notches or cord channels
• Soft-close hinges and mirrored interiors

These cabinets differ from lighted cabinets, which focus on mirror illumination. An outlet model is about power for devices, though many units combine both functions in one package.

Good Uses and Bad Uses for the Interior Outlet

Interior outlets shine for low-wattage, set-and-forget devices. Electric toothbrush bases, shaver chargers, water flosser charging stands, phone chargers and rechargeable trimmers all fit well. They stay plugged in, draw little power, and you never see the cords.

Avoid using the cabinet outlet for heat-producing tools while they are inside a closed cabinet. Hair dryers, curling irons and flat irons draw a lot of current and get very hot. Use them at the vanity receptacle and let them cool completely before storing them. Check the cabinet’s instructions for its rated load; many interior outlets are intended only for small appliances. Never run an extension cord out of the cabinet.

Power Options: Hardwired vs Plug-In

Most cabinets with interior outlets are hardwired. A cable from a wall junction box connects to a wiring compartment on the cabinet, usually at the back or side. This gives a clean look but requires proper electrical work.

A few surface mount models plug into an existing nearby receptacle with a short cord. These are simpler, but you still need that receptacle to be GFCI protected, and the cord should run neatly without crossing the sink area.

Low-Voltage vs Line-Voltage Parts

Inside many cabinets, the receptacle runs on standard 120 volt line voltage, while USB ports and LED lights run on low voltage through a small built-in power supply. The power supply still connects to line voltage, so the whole unit is treated as a line-voltage installation. Only buy cabinets whose components are listed for the use, and do not replace internal parts with unlisted chargers or adapters.

GFCI Protection and Circuit Requirements

Bathroom receptacles require ground-fault circuit interrupter protection, and a cabinet outlet near a sink is no exception. GFCI protection can come from a GFCI receptacle upstream on the same circuit, a GFCI breaker in the panel, or a built-in GFCI device inside the cabinet. Your electrician will confirm which applies and that it trips correctly.

Bathroom receptacles are commonly served by a 20 amp circuit, and local rules decide whether a cabinet can share a circuit with the vanity receptacles or lighting. Do not assume the nearest wire will do. An electrician can check the load on the circuit, the condition of the existing wiring, and whether a dedicated circuit is needed, especially if the cabinet also has lights and a defogger.

Requirements vary by location, and many jurisdictions require a permit for new circuits or new outlet locations. A licensed electrician knows what your local authority expects and can pull the permit.

Installing a Medicine Cabinet With an Electrical Outlet

You can handle much of the carpentry yourself while leaving the wiring to a pro. A typical project for a medicine cabinet with electrical outlet goes like this.

Tools and Materials

• Stud finder, level, tape measure and pencil
• Drywall saw or oscillating tool
• Non-contact voltage tester
• Drill driver and appropriate screws or anchors
• Safety glasses and a dust mask
• Drywall patch materials for any repairs

Steps

1. Plan the location. Confirm cabinet size, rough opening for recessed models, and where the wiring compartment sits on the cabinet.
2. Turn off power. Shut off the breaker for any circuit in that wall. Confirm power is off with a non-contact voltage tester on nearby outlets, switches and any visible cable.
3. Inspect the cavity. Cut a small exploratory hole and look for pipes, vents and cables. Never cut a stud without structural guidance.
4. Cut the opening. For recessed installs, cut to the manufacturer’s rough opening.
5. Have the electrician run power. A licensed electrician runs or extends the cable to the cabinet location, provides GFCI protection, and makes all connections in the cabinet’s wiring compartment.
6. Mount the cabinet. Set it level, secure it to framing per the instructions, and keep cables clear of screws.
7. Restore power and verify. The electrician restores power and tests the GFCI with its test button to confirm it trips and resets.

Do not try to work on energized wires or live circuits. If something does not work after installation, turn the breaker off and call the electrician back.

Troubleshooting

• Outlet is dead: press reset on the upstream GFCI receptacle or check the panel for a tripped GFCI breaker. If it trips again, unplug devices and call an electrician.
• GFCI trips repeatedly: a damp device, a failing charger or a wiring fault can cause it. Do not bypass the GFCI.
• USB ports charge slowly: older ports may supply low current; use them for toothbrushes and shavers, not tablets.
• Cabinet feels warm: unplug heat tools, leave the door open briefly, and check that nothing is pressing on the outlet. Persistent heat warrants a professional inspection.
• Lights flicker: turn off power and have an electrician check connections and the power supply.

General Cost Ranges

Cabinets with built-in outlets usually cost more than basic models, often starting in the low hundreds and rising for larger, lighted or frameless designs. Electrical labor varies widely. Connecting a cabinet to an existing box nearby is a short job, while running a new cable, adding GFCI protection or installing a new circuit costs more, especially in finished walls. Drywall patching, painting and permit fees add to the total. Get a written quote that lists the wiring scope.

When to Call a Licensed Professional

Bring in a licensed electrician for any hardwired connection, any new outlet or circuit, and any situation where the existing wiring is old, ungrounded or unclear. Permits are often required for this work. If the opening needs to be wider than a stud bay or the wall may be load bearing, consult a contractor about framing as well. A licensed plumber should handle any pipes that need to move. The cabinet itself is a simple box; the electrical connection is the part that keeps your family safe.