How to Relocate Controls to a Reachable Height
Why this matters
A wall switch at 48 inches and an outlet at 14 inches were set for a standing adult who bends easily. For someone in a wheelchair, or who cannot bend or raise an arm past the shoulder, they become two controls they need someone else to work, and the lamp stays on all night because nobody was there to turn it off. Moving them is straightforward electrical work. Moving a thermostat is too, with one trap: put it where the person can reach it and you may have put it where it can no longer read the room, so the house runs too hot or too cold and the person blames the furnace.
What height each control should go to is owned by a sibling: see related, Reach Ranges and Control Heights. Choosing devices the person can read and operate once they are within reach is covered in Installing Controls a Customer Can Actually Reach and Read. This article is the relocation itself, one control at a time, followed through a single bedroom.
Before you open a wall: power, permit and who may do it
De-energize and prove it. Turn off and lock the breaker for every box you will open, then prove each box dead on a known live source before and after (live-dead-live, per NFPA 70E Article 120 (120.5 in the 2021 edition, renumbered in 2024), with work practices at 29 CFR 1910.333(b)(2)). A switch box often carries a second circuit passing through, and a bedroom outlet can be on a multiwire branch circuit sharing a neutral with another room. Test every conductor in the box, not just the device.
Permit and licensing. Replacing a device in the same box is exempt from permits in many jurisdictions. Moving a box, adding one, or running new cable commonly is not. Separately, in many states extending a branch circuit is licensed electrical work whoever does it; a handyman exemption usually stops at like-for-like replacement. Check both with your jurisdiction before you quote, and if this work is outside your license, the electrician is the route, with the person's measured reach band written on the work order.
What extending a circuit triggers. Under the editions of the NEC most jurisdictions now enforce, extending or modifying a dwelling branch circuit can require arc-fault protection for that circuit (210.12, as adopted), and a replacement receptacle generally has to be tamper-resistant and, in the locations that require it, ground-fault protected (406.4 and 406.12, as adopted). Price those in up front.
The bedroom in this example
A one-story house with an attic. The customer uses a power wheelchair and is in bed from about 9 p.m. Her occupational therapist measured her side reach: she can work a control comfortably between 18 and 44 inches above the floor, with her chair parked parallel to the wall. Three controls are outside that band:
- The room switch beside the door, center at 48 inches, 4 inches above the top of her band.
- The outlet behind the bed where she charges her phone and her chair, center at 14 inches, 4 inches below the bottom of her band, and behind a nightstand.
- The thermostat in the hallway outside her door, center at 60 inches, 16 inches above the top of her band.
Targets, all measured to the center of the device and inside the band with room for the device's own height: switch at 40 inches, outlet at 24 inches, thermostat at 40 inches.
The switch: lower it without burying a splice
Step 1: Find out where the cable comes from. Pull the switch out (with the circuit proven dead) and look at where the cable enters the box. In a one-story house it usually drops from the attic through the top plate.
Step 2: Find slack before you plan a splice. Lowering the box 8 inches needs 8 more inches of cable at the box. Nonmetallic cable is secured within 12 inches of the box (NEC 334.30, as adopted), so there is little slack in the wall itself, but there is often slack in the attic where the run was looped or left long. Go up, find the cable over the top plate, free a staple if needed, and feed it down.
Step 3: If there is no slack, run new cable or splice where it stays accessible. Every splice must be in a box that remains accessible after the job (NEC 300.15 and 314.29, as adopted). A junction box in the attic with a cover on it is accessible. One buried behind the patched drywall is not.
Step 4: Cut the new box in, then retire the old opening. Cut the new opening at 40 inches to center, fit an old-work box, check box fill (NEC 314.16, as adopted) for the conductors and the device, land the switch, and patch the old opening.
In the example: the attic had a loop of slack 2 feet from the top plate. Freed and fed down, it reached the new box with 6 inches to spare. No splice, no new junction box.
The outlet: raise it, and keep the old one if it is useful
Step 1: Map the feed. Bedroom outlets are usually daisy-chained, one box feeding the next. Find whether this outlet is the end of a run or feeds others beyond it.
Step 2: Choose between moving it and adding above it. If it ends a run, you can move the box up. If it feeds the next outlet, moving it means the downstream cable has to reach the new location too. Often the cleaner answer is to leave the low outlet in service and add a new one above it in the same stud bay, fed from the low box. That needs box fill checked in the low box for the added cable, and it may be the "extension" that brings in the arc-fault requirement above.
Step 3: Keep it counting. A receptacle more than 5-1/2 feet above the floor does not count toward the NEC's required wall spacing in a dwelling (210.52, as adopted). Raising one to 24 inches is nowhere near that, so the room stays compliant.
Hazard: the new opening is above the old box in the same bay, and the cable you are fishing up runs right past live conductors if anything else in that bay is still on. Prove the bay's other circuits dead too, or fish only after the whole bay is proven dead.
In the example: the outlet fed one more outlet beyond the bed. The low outlet stayed (it now serves the nightstand lamp, which stays plugged in), and a tamper-resistant receptacle was added at 24 inches, fed from the low box. Box fill on the low box was recomputed with the added cable and still fit. The circuit had no arc-fault protection; a combination AFCI breaker went in, because the jurisdiction's adopted edition requires it for an extension.
The thermostat: one move that works and one that does not
A thermostat measures the air at the spot it sits. Move the spot and you change what it measures, so the relocation question is not just "can she reach it" but "is the air there the air she lives in."
Good sensing locations share a few traits: an interior wall, away from supply registers, out of direct sun, not beside an exterior door, not above a lamp, television or other heat source, and in a space with normal air movement. The thermostat maker's instructions give a mounting height, often around 5 feet; going lower is fine in the same air, but very low on a wall in heating season reads the cooler air that settles near the floor, so the system runs longer and the room at head height ends up warmer than the setpoint.
Low voltage versus line voltage. Most furnace and heat pump thermostats run on low voltage, around 24 volts. A thermostat for electric baseboard heat is often line voltage (120 or 240 volts) and gets the full de-energize and live-dead-live treatment above, at the thermostat and at the heater.
Old mercury thermostats. A pre-digital thermostat may contain a sealed glass bulb of mercury. Remove it intact, keep it upright, bag it, and recycle it as household hazardous waste; many states prohibit putting them in the trash. A broken bulb in a carpeted room is a cleanup the customer cannot do safely, so do not break it.
In the example, two options were on the table:
- Lower it on the same hallway wall, from 60 to 40 inches. Same interior wall, same air, a return grille 3 feet away that keeps the hall air moving with the house, no supply register within throw. At 40 inches it is still well above the cooler layer at the floor.
- Move it into her bedroom, to the wall beside her bed, so she can reach it lying down. That wall is exterior, and the spot gets afternoon sun through her window. In winter it would read the cold wall and call for heat all night; on sunny afternoons it would read warm and shut the system off for the whole house.
Option 1. It meets her reach band in her chair, and it measures the house. For the overnight need she cannot meet from bed, a remote control or an app on her phone is the answer, not a thermostat on the wrong wall: see related, How to Set Up Smart Devices With a Disabled User.
Wiring: the thermostat cable dropped from the attic with about 2 feet of slack coiled in the wall cavity, enough for the 20-inch drop once the coil was pulled down. Had it been short, a new run from the air handler is better than a splice: a low-voltage splice in the wall is the same buried-splice problem in a smaller cable. Before closing up, confirm the common (C) wire is connected if the thermostat needs one, and that the conductor colors land on the same terminals as before.
Bringing it back on
Resume step, with its check: every device is mounted with its cover plate on, every splice is boxed, the old openings are patched or covered, and nothing in the attic is left with an open junction box. Restore the breaker standing to the side of the panel, not in front of it. Test the switch, test the receptacles with a plug-in tester (including the AFCI test button), and run the heating through one call from the relocated thermostat and watch the equipment start and stop on its command.
Then have her use each control from her chair, parked the way she parks it. A switch at 40 inches that she can reach only by repositioning the chair twice is in the wrong place, whatever the number says.
How to verify you got this right
The three numbers are recorded against her band on the job: switch 40, outlet 24, thermostat 40, band 18 to 44, all to device center. On a follow-up call a week later, ask two questions: whether she has used each control herself every day, and whether the house has been as warm as the thermostat says. The first proves the reach. The second proves the thermostat still reads the room, and is the one a relocation quietly gets wrong.
References
- NEC Sections 210.12, 210.52, 300.15, 314.16, 314.29, 334.30, 406.4 and 406.12, as adopted by your jurisdiction.
- NFPA 70E Article 120 (120.5 in the 2021 edition, renumbered in 2024); OSHA 29 CFR 1910.333(b)(2).
- Thermostat manufacturer installation instructions for mounting height and location.
- See related: Reach Ranges and Control Heights; Installing Controls a Customer Can Actually Reach and Read; How to Make the Mechanical Systems Reachable; How to Set Up Smart Devices With a Disabled User.