The receptacle is the most boring device we install and the one quietly racking up the most failed inspections right now. Not because anybody forgot how to wire one — because the NEC keeps expanding where protection is required, and the adopted code in a lot of jurisdictions moved out from under installs that were correct two cycles ago.

None of this is exotic. It’s standard receptacles in locations the code newly covers. That’s exactly why it catches experienced people: the work looks identical to what you’ve always done, and the only thing that changed is the rule about where it needs GFCI or tamper-resistant protection.

The direction of travel: GFCI keeps expanding

For years the trend has been one direction — more locations require GFCI, not fewer. The places that have been pulled in or tightened across recent cycles:

• 240V appliance circuits. This is the big one people miss. GFCI protection requirements have reached into circuits that used to be untouchable on a standard breaker — ranges, dryers, and similar 240V loads in dwellings depending on your adopted edition. If you’ve been roughing these in on a plain two-pole breaker out of habit, check your edition before you set the panel.
• Garages, outdoors, and accessory buildings. Long required at 125V, but the scope of what counts and which receptacles are included has kept widening.
• Basements and laundry areas. Finished or unfinished, the carve-outs that used to let a basement receptacle skip GFCI have been shrinking.
• Within a defined distance of sinks and water in more room types than just the kitchen and bath.

The practical failure: you wire a basement or a laundry the way you always have, it would’ve passed three years ago, and the inspector reds it because the adopted code now wants protection there. The work isn’t wrong by craft. It’s wrong by date.

Tamper-resistant: more locations, fewer exceptions

Tamper-resistant (TR) receptacles have been required in dwelling units for a while, but the scope has crept outward too — more locations inside and around the dwelling, and fewer of the old “this spot is exempt” exceptions. The trap here is using up old stock: a box of standard receptacles from two jobs ago goes in a location that now requires TR, and you don’t catch it until the inspector does.

If you’re buying receptacles by the case, the cheap insurance is to standardize on TR for dwelling work so the wrong device never makes it into the pouch in the first place.

Where the money gets lost

The reason this matters isn’t the citation — it’s the rework. The expensive version of this mistake is the one you bury:

• GFCI breaker vs. device, decided at rough-in. If a circuit needs GFCI and you didn’t plan it, retrofitting after drywall means either a GFCI breaker (fine, if there’s panel space and the load plays nice with it) or fishing a GFCI device into a now-closed wall. Decide at rough-in, not at trim.
• 240V GFCI nuisance and load compatibility. Some appliances and some GFCI breakers don’t get along, and you’d rather discover that during rough-in planning than on a final with the homeowner watching the dryer trip.
• Shared neutrals and GFCI. Multiwire branch circuits and GFCI protection have to be coordinated — a shared neutral through a GFCI device will trip, and the fix after the fact is ugly.

What to actually do

1. Pull your jurisdiction’s adopted NEC edition and its local amendments. “The 2026 code” is meaningless if your AHJ is still on a prior cycle, or amended the parts that matter. Adoption lags publication, and it varies by jurisdiction — the only edition that counts is the one your inspector enforces.
2. Re-walk your standard rough-in checklist against the current GFCI map. The locations you’ve internalized as “needs GFCI” are a few cycles out of date for a lot of guys. Update the mental map, especially for 240V circuits, basements, and laundry.
3. Standardize on TR for dwelling receptacles so old stock can’t sneak into a location that now requires it.
4. Plan GFCI at rough-in, breaker-or-device, with panel space accounted for. The cost of guessing wrong is paid after drywall.
5. When in doubt, ask the inspector before you cover it. A two-minute question at rough-in is free. Re-opening a wall is not.

The receptacle didn’t get harder to install. The code just keeps deciding more places need protection, and the install that passed on the same floor plan last year isn’t automatically the install that passes now. Read the edition you’re actually being held to — that’s the whole job here.

— Mike