Weekly digest #61: common code violations spotted

GFCI Gaps in Finished Basements

Basement remodels keep producing the same miss: receptacles in finished areas wired without GFCI protection. NEC 210.8(A)(5) requires GFCI for all 125V through 250V receptacles, 150V to ground or less, 50A or less, installed in basements. The 2020 cycle removed the "unfinished" qualifier that used to trip people up.

A finished rec room still counts. So does a walk-in closet carved out of basement space. The only carve-out worth knowing is the receptacle supplying a permanently installed fire alarm or burglar alarm system, per 210.8(A) Exception.

Inspectors are catching this on kitchenettes, bar areas, and workshop circuits. If the slab is below grade, assume GFCI until proven otherwise.

Bonding Jumpers Missing at CSST

Corrugated stainless steel tubing needs a dedicated bonding jumper sized per NEC 250.104(B), minimum 6 AWG copper, clamped to the rigid pipe section ahead of the CSST transition. Black jacketed "arc-resistant" CSST does not relieve the bonding requirement; it relaxes the clamp location rules, nothing more.

The violation pattern is consistent: HVAC tech runs new gas, electrician never gets called back, bonding lug ends up on the flex line or missing entirely. During a service upgrade, walk the gas system before you close up.

If the only ground path for that gas line is through the appliance cord, a nearby lightning strike will find your CSST before it finds the ground rod. Land that 6 AWG on black iron.

NM Cable Through Studs Without Protection

NEC 300.4(A)(1) requires 1.25 inches of setback from the nearest edge of a wood stud, or a 1/16 inch steel plate when that setback cannot be met. Framers are boring shallow with paddle bits and electricians are pulling through without checking.

The plate has to cover the cable across the full width of the stud edge where the hole sits within the 1.25 inch zone. One nail plate slapped on the face is not enough if the hole runs through a double top plate and only the bottom member is protected.

• Bore centered in 2x4 studs whenever possible, you get 0.75 inches each side.
• Stack plates on drilled top plates, one per member.
• Notches require plates per 300.4(A)(2), same 1/16 inch minimum.
• LVL and engineered lumber: check manufacturer specs before drilling at all.

Tamper-Resistant Receptacles Getting Swapped Out

NEC 406.12 expanded the TR requirement well beyond dwelling units in recent cycles. Preschools, daycare facilities, waiting rooms of medical and dental offices, and common areas of multifamily buildings all fall under it now. Service calls keep turning up standard receptacles where TR is required, usually because someone complained the TR shutters "stick" and a handyman swapped them.

Document what you find on the service ticket. If the building is a daycare and you replace a damaged receptacle, you are on the hook for installing TR even if the existing device was not. Replacement provisions in 406.4(D)(5) make that explicit.

Panel Schedule and Working Space Fails

NEC 408.4(A) requires every circuit and modification to be legibly identified on a durable means at the panel. Pencil on masking tape is not durable. Neither is a schedule that lists "lights" for half the breakers. Inspectors are writing this up more aggressively since the 2017 cycle strengthened the language.

Working space under 110.26 is the other recurring miss on panel swaps. 36 inches of depth, 30 inches of width or the width of the equipment (whichever is greater), and 6.5 feet of headroom. Storage shelves, water heaters, and laundry sinks drift into that zone during remodels.

If you cannot stand in front of the panel with the dead front off and swing the door fully open without hitting anything, it fails. Measure before you quote the job, not after the homeowner pushes back on moving the shelving.

1. Verify 110.26 clearances before energizing.
2. Fill out the schedule with room names and loads, not generic labels.
3. Note AFCI and GFCI breakers directly on the schedule.
4. Leave a laminated or printed copy, handwritten on tape is a rewrite.

Outdoor Receptacle Covers Wrong Rating

In-use covers, also called bubble covers, are required on 15A and 20A receptacles in wet locations per NEC 406.9(B)(1). Damp location covers only close when nothing is plugged in, which does not count as a wet location cover no matter what the big-box label says.

The other half of this violation is the receptacle itself. Wet location receptacles must be listed as weather resistant, marked WR. A standard receptacle behind a bubble cover still fails inspection. Both pieces have to be right.

Common spots inspectors are flagging: soffit receptacles for holiday lighting, pool pump disconnects, and EV charger installations where the cord runs outside. When in doubt, WR device plus an in-use cover rated for the cord diameter you expect.