The 2023 NEC expands GFCI and surge protection, changes kitchen-island receptacle rules, and moves definitions into Article 100. These are the main changes from the 2020 NEC to learn first. Use the edition adopted for your job or listed for your licensing exam.
Watch Victor explain the 2023 NEC reorganization
Victor Ring walks through the new medium-voltage articles, including Articles 235, 245 and 305. Use this lesson to find rules that moved in the 2023 book.
Watch Victor explain the 2023 NEC reorganizationWatch the JCR lesson on YouTube2023 NEC vs. 2020: the main differences
| Topic | 2020 NEC | 2023 NEC |
|---|---|---|
| Kitchen GFCI protection | Kitchen rule covers receptacles serving countertops. Other location rules also apply. | Kitchen rule covers all receptacles in the kitchen. |
| Island and peninsula receptacles | Required quantity depends on countertop area. | Optional, with provisions for a future receptacle if none is installed. |
| Surge protection | Required for services supplying dwellings. | Expanded to more occupancies and feeder-supplied equipment. |
| 10-amp branch circuits | No equivalent 10-amp multiple-outlet branch-circuit category. | Permitted for specific loads under 210.23(A). |
| Definitions | In Article 100 and individual articles. | Consolidated in Article 100. |
1. GFCI protection covers more kitchen receptacles and appliances
Under 2023 NEC 210.8(A)(6), dwelling kitchen receptacles need GFCI protection even when they do not serve a countertop. This includes a refrigerator receptacle. The rule covers 125- through 250-volt receptacles supplied by single-phase circuits rated 150 volts or less to ground.
Section 210.8(D) also adds electric ranges, wall ovens, cooktops, clothes dryers and microwave ovens to its appliance requirements. For these appliances, rated no more than 150 volts to ground and 60 amps, GFCI protection applies whether the connection uses a cord and plug or is hardwired.
Studying the older edition? Use our 2020 NEC GFCI guide so you do not mix the two rules.
2. Kitchen-island receptacles become optional
The 2020 NEC used countertop area to determine the required number of island and peninsula receptacles. The 2023 NEC removes that minimum. If no receptacle serves the surface, you must provide for one to be added later.
A receptacle installed to serve that surface must meet 210.52(C)(3): on or above it, up to 20 inches above, or in a listed countertop or work-surface assembly. The old below-counter location no longer qualifies. Confirm the acceptable provision for a future outlet with the local inspector before construction.
Prepare for the code edition your exam uses
Learn to find answers in the code book, work through calculations and practice for test day.
Live classes teach the 2020 NEC. Check your state’s exam requirements before choosing a course. NC prep includes NC business and law. For another state, also study any business-and-law material required for your license. JCR also carries the 2020 NEC softbound code book.
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Choose in-person classes, live Zoom or recorded courses. Review NEC navigation, grounding and bonding, and other electrical topics. Check the course’s NEC edition, state approval and credit hours before enrolling.
See CE courses and class dates3. Surge protection expands beyond dwelling services
2023 NEC 230.67 adds services supplying dormitory units, hotel and motel guest rooms and suites, and designated patient sleeping rooms in nursing homes and limited-care facilities. New Sections 215.18 and 225.42 also address equipment supplied by feeders.
For dwelling protection, the SPD must have a nominal discharge current rating of at least 10 kA. Do not confuse that rating with the larger maximum surge-current number advertised on a product.
4. Some lighting and fan loads can use 10-amp circuits
2023 NEC 210.23(A) permits 10-amp branch circuits for specified lighting and fan loads. It prohibits receptacle outlets, garage-door openers and laundry equipment on those circuits. A 10-amp circuit is not a replacement for the required 20-amp kitchen, laundry or bathroom receptacle circuits.
5. Definitions and medium-voltage rules move
Look in Article 100 for definitions previously located in individual articles. An article number in parentheses after a definition limits that definition to the named article.
Medium-voltage rules also get dedicated articles: 235 (branch circuits, feeders and services), 245 (overcurrent protection) and 305 (general wiring requirements). Use the index to find the new location when an older practice question cites the 2020 book.
Common questions
Does the 2023 NEC require a kitchen-island outlet?
No. It requires provisions for a future receptacle when one is not installed to serve the island surface. If you install one, follow the 2023 location rules.
Should I switch to the 2023 NEC for my licensing exam?
Use the edition on your exam’s official reference list. Start with JCR’s state requirements. A state’s construction-code adoption and its exam transition can happen on different dates. Our NEC edition guide explains the difference.
Does this cover every change?
No. This is a focused overview for electricians and exam candidates. For a fuller review, see JCR’s code-update class guide and continuing education classes.
Reviewed October 25, 2026. Sources: 2023 NEC, Eaton’s code-change guide and the linked NFPA and Leviton explanations. Apply the adopted edition and local amendments on the job.
