Electrical / runnable MCP tool
Run the Outdoor HVAC GFCI Requirement (NEC 210.8(F)) in your AI assistant
Through the free Intry MCP server, Claude, ChatGPT, or Cursor runs this exact calculator and hands back a verdict and the cited source, not a guess. Tool name: outdoor_hvac_gfci.
What it runs: Whether an outdoor outlet at a house needs GFCI protection, answered for your state's own version of the rule. It refuses more often than it answers, and having read your state is not the same as having an answer for it. A refusal is never a national default.
How it computes the answer
Verdict computed from the jurisdiction's enforced NEC edition and its own amendment to 210.8(F), each read from the issuing agency's document and held as separate facts, against the section text read from the printed NFPA 70 and the TIA lineage enumerated from NFPA's repository.
What it cites
Your assistant calls the same engine the interactive calculator calls, with the inputs listed under Inputs. These are the sources that engine reads.
- NEC 210.8(F), read from the printed books (2020, 2023, 2026) and the 2020 edition's TIA
- The section text, its Exception No. 2 and the sentence 'This exception shall expire September 1, 2026' were read from the printed NFPA 70 rather than a download. The printed 2020 text (page 70-63) carries one exception, for lighting outlets, and no HVAC exception; the 2020 text the tool answers from is TIA 20-19's, which revised the whole paragraph and added the HVAC exception. The ampere ceiling and the volts-to-ground limit are edition-specific and are stated only for the editions read (2020, 2023 and 2026); the tool refuses on any other edition rather than carrying a number across an edition boundary. The 2026 text sets its ceiling at 60 A and adds Exception No. 3, which permits listed Class C SPGFCI protection for listed HVAC equipment with the disconnect marked.
- TIA 20-19 and TIA 23-3, the lineage of the exception itself
- The 2020 NEC as printed has no listed-HVAC exception (its 210.8(F) carries one exception, for lighting outlets, page 70-63). The exception arrived by Tentative Interim Amendment issued 2022-08-12. Established by enumerating NFPA's TIA repository to the 404 boundary for each edition rather than by searching: the 2026 edition carries exactly 8 TIAs and none touches 210.8. This is why a jurisdiction on the 2020 edition that adopted before that date, and does not pick up later TIAs, may never have had the exception at all, and why the tool asks whether the adopting instrument settles that question before answering.
- Each state's own amendment to 210.8(F), where we hold it
- For the 27 jurisdictions read, the state's own documents were read at the issuing agency. Where the tool answers, the amendment's instrument is named on the interactive calculator, and under a not-required answer its operative text is quoted word for word so the reading can be argued with; where it refuses, the refusal states its reason. Amendments take at least four different forms, and they are not interchangeable: deleting the section, writing a state exception that never carried an expiry, reproducing the NEC's and omitting the expiry sentence, and acting on the NEC's own Exception No. 2. The tool models them separately because they reach the same practical answer by different legal routes.
- Each state's own current-code listing, for what is in force today
- Read as a separate fact from the amendment text, and that separation is not bureaucratic. North Carolina's amendment package is real and its 2023 code is on indefinite delay, so reading the amendment alone would have produced a confident answer keyed to a code book the state does not enforce. Where a state's own listing and the adoption table disagree, the tool refuses rather than picking a winner.
- The NEC adoption table, for the edition shown where the tool holds no state amendment
- Shown in the last column, with a link to its source, for jurisdictions whose own 210.8(F) amendment this tool does not hold. Each row is read from that state's own rule, statute or adopted-codes listing and carries the date it was read. It says which edition a state enforces and nothing about 210.8(F), and where a state's own current-code listing is also held, the tool refuses if the two disagree.
- The state documents this tool answers from
- Alabama, Alabama: the document this tool's refusal names (Alabama Administrative Code · read 2026-08-02): https://admincode.legislature.state.al.us/agencies/355. Alabama, Ala. Admin. Code chapter 355-12-1, Alabama State Building Code (Alabama Administrative Code · read 2026-10-16): https://admincode.legislature.state.al.us/api/chapter/355-12-1. Alaska, Alaska: the document this tool's refusal names (Alaska DOL · read 2026-10-17): https://www.labor.alaska.gov/lss/mihome.htm. Arkansas, Home page (Arkansas Code of Rules · read 2026-08-02): https://codeofarrules.arkansas.gov/. Arkansas, 17 CAR Section 210-601 (Arkansas Code of Rules · read 2026-10-10): https://codeofarrules.arkansas.gov/Rules/Rule?levelType=section&titleID=17&chapterID=289&subChapterID=409&partID=1299&subPartID=8221§ionID=54198. Colorado, Colorado's adoption of the 2026 NEC (Colorado Secretary of State · read 2026-10-16): https://www.sos.state.co.us/CCR/DisplayRule.do?action=ruleinfo&ruleId=2214&deptID=18&agencyID=113&deptName=Department%20of%20Regulatory%20Agencies&agencyName=Division%20of%20Professions%20and%20Occupations%20-%20State%20Electrical%20Board&seriesNum=3%20CCR%20710-1. Colorado, 3 CCR 710-1, Rule 1.5 A (version effective 07/15/2026) (Colorado Secretary of State · read 2026-10-17): https://www.sos.state.co.us/CCR/GenerateRulePdf.do?ruleVersionId=12606&fileName=3%20CCR%20710-1. Connecticut, Connecticut's adoption of the 2020 NEC (Connecticut Portal · read 2026-10-17): https://portal.ct.gov/das/office-of-state-building-inspector/history-of-the-connecticut-state-building-code. Connecticut, 2022 Connecticut State Building Code (Connecticut Portal · read 2026-10-17): https://portal.ct.gov/das/-/media/das/office-of-state-building-inspector/2022-state-codes/2022-csbc-final.pdf. Georgia, Georgia's adoption of the 2023 NEC (Georgia DCA · read 2026-08-02): https://dca.georgia.gov/community-assistance/construction-codes/current-state-minimum-codes-construction. Georgia, Georgia State Amendments to the National Electrical Code (2023 Edition), Georgia Department of Community Affairs, revised January 1, 2026 (Georgia DCA · read 2026-08-02): https://dca.georgia.gov/document/document/nec-2026-amendment-packet/download. Hawaii, Council letter of March 31, 2022, with the Hawaii State Electrical Code effective March 15, 2022 (Hawaii AGS · read 2026-10-16): https://ags.hawaii.gov/wp-content/uploads/2021/12/StateElectricalCode_03152022.pdf. Louisiana, Notice of Intent, Adoption of the 2023 NEC and the 2024 I-Codes (LAC 17:I.Chapter 1), Louisiana Register Vol. 52, No. 8, August 20, 2026 (Louisiana State Uniform Construction Code Council · read 2026-10-24): https://luccc.louisiana.gov/wp-content/uploads/Louisiana-Register_August-2026-publication.pdf. Louisiana, LUCCC rules compilation, August 1, 2026 (LAC 17:I.115) (Louisiana State Uniform Construction Code Council · read 2026-10-16): https://luccc.louisiana.gov/wp-content/uploads/LUCCC_blue-book_08012026.pdf. Maine, Maine's adoption of the 2026 NEC (State of Maine · read 2026-10-17): https://www.maine.gov/pfr/professionallicensing/professions/electricians. Maine, 16-642 C.M.R. chapter 5, Maine Uniform Building and Energy Code: Residential Building Code for One and Two-Family Dwellings (State of Maine · read 2026-10-17): https://www.maine.gov/dps/fmo/sites/maine.gov.dps.fmo/files/inline-files/642C005.pdf. Maine, 02-318 C.M.R. Chapter 120 (filing 2026-140), the Electricians' Examining Board's adoption of the 2026 National Electrical Code, for installations commencing on or after July 1, 2026 (State of Maine · read 2026-10-17): https://www.maine.gov/sos/sites/maine.gov.sos/files/inline-files/318c120-2026-140-RPR.docx. Maryland, Home page (Maryland COMAR · read 2026-08-02): https://regs.maryland.gov/. Massachusetts, Massachusetts Electrical Code page (Commonwealth of Massachusetts · read 2026-10-17): https://www.mass.gov/info-details/massachusetts-electrical-code. Massachusetts, 780 CMR 51.00, Massachusetts Residential Code, Chapters R34 to R43: Electrical (Commonwealth of Massachusetts · read 2026-10-17): https://www.mass.gov/doc/10th-edition-residential-chapters-34-to-43-electrical-amendments/download. Massachusetts, 527 CMR 12.00, the Massachusetts Electrical Code (the 2026 NEC with Massachusetts amendments), for installations under permits granted after April 24, 2026 (Commonwealth of Massachusetts · read 2026-10-17): https://www.mass.gov/doc/527-cmr-1200-massachusetts-electrical-code-effective-42426/download. Minnesota, Electrical codes and standards page (Minnesota Department of Labor and Industry · read 2026-10-16): https://dli.mn.gov/business/electrical-contractors/electrical-codes-and-standards. Minnesota, Minn. Stat. 326B.36 (Minnesota Office of the Revisor of Statutes · read 2026-10-17): https://www.revisor.mn.gov/statutes/cite/326B.36/. Minnesota, Minn. R. 1309.0010 (Minnesota Office of the Revisor of Statutes · read 2026-10-17): https://www.revisor.mn.gov/rules/1309.0010/. Minnesota, Fact sheet: electrical code (Minnesota Department of Labor and Industry · read 2026-10-16): https://www.dli.mn.gov/sites/default/files/pdf/fs-electrical-code.pdf. Minnesota, Minn. R. 1315.0200 (Minnesota Office of the Revisor of Statutes · read 2026-10-17): https://www.revisor.mn.gov/rules/1315.0200/. Minnesota, Minn. R. chapter 1315, Electrical Code (Minnesota Office of the Revisor of Statutes · read 2026-10-17): https://www.revisor.mn.gov/rules/1315/. Missouri, Missouri: the document this tool's refusal names (Missouri Secretary of State · read 2026-08-02): https://www.sos.mo.gov/adrules/csr/current/20csr/20c4240-123.pdf. Montana, ARM 24.301.401 (AMD 2026-95, effective 09/26/2026) (Montana Secretary of State, Administrative Rules of Montana · read 2026-10-16): https://rules.mt.gov/browse/collections/aec52c46-128e-4279-9068-8af5d5432d74/policies/9a769ee6-ecd8-482f-8646-19e494b255ec. New Mexico, New Mexico's adoption of the 2020 NEC (New Mexico RLD · read 2026-08-02): https://www.rld.nm.gov/construction-industries/rules-laws-and-building-codes/. New Mexico, 14.10.4 NMAC (New Mexico SRCA · read 2026-08-02): https://www.srca.nm.gov/parts/title14/14.010.0004.html. North Carolina, State Electrical Code and Interpretations (North Carolina OSFM · read 2026-08-02): https://www.ncosfm.gov/codes/state-electrical-division/state-electrical-code-and-interpretations. North Dakota, Laws and Rules page (North Dakota State Electrical Board · read 2026-10-16): https://www.ndseb.com/laws-rules/. North Dakota, North Dakota Century Code chapter 43-09 (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/cencode/t43c09.pdf. North Dakota, North Dakota Century Code chapter 54-21.3, State Building Code (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/cencode/t54c21-3.pdf. North Dakota, N.D. Admin. Code 24.1-06-02-10, the State Electrical Board's wiring standards under the 2026 National Electrical Code (first version, printed in 2025), effective July 1, 2026 (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-02.pdf. North Dakota, N.D. Admin. Code title 24.1, State Electrical Board (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/api/acdata/html/title24.1.html. North Dakota, N.D. Admin. Code chapter 24.1-01-01, Organization of Board (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-01-01.pdf. North Dakota, N.D. Admin. Code article 24.1-02, Definitions, General Statement of Policy, and Interpretative Rules (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/api/acdata/html/24.1-02.html. North Dakota, N.D. Admin. Code 24.1-02-01-02 (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-02-01.pdf. North Dakota, N.D. Admin. Code chapter 24.1-03-01, Licensing Requirements (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-03-01.pdf. North Dakota, N.D. Admin. Code chapter 24.1-04-01, Education Requirements (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-04-01.pdf. North Dakota, N.D. Admin. Code chapter 24.1-05-01, Certificates and Inspections (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-05-01.pdf. North Dakota, N.D. Admin. Code article 24.1-06, Electrical Wiring Standards (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/api/acdata/html/24.1-06.html. North Dakota, N.D. Admin. Code chapter 24.1-06-01, General Requirements (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-01.pdf. North Dakota, N.D. Admin. Code chapter 24.1-06-03, Wiring Methods and Materials (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-03.pdf. North Dakota, N.D. Admin. Code chapter 24.1-06-04, Equipment for General Use (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-04.pdf. North Dakota, N.D. Admin. Code chapter 24.1-06-05, Special Occupancies (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-05.pdf. North Dakota, N.D. Admin. Code chapter 24.1-06-06, Special Equipment (North Dakota Legislative Branch · read 2026-10-17): https://ndlegis.gov/information/acdata/pdf/24.1-06-06.pdf. Ohio, Ohio's adoption of the 2023 NEC (Ohio Administrative Code · read 2026-10-24): https://codes.ohio.gov/assets/laws/administrative-code/rules/4101/1/4101$1-35-01_eff_3_1_24.pdf. Ohio, Ohio Administrative Code 4101:1-35-01(C) (Ohio Building Code referenced standards, effective March 1, 2024 and in its current version of October 15, 2025), which incorporates "70-23 National Electrical Code (except that section 210.8(F) Exception No. 2 does not expire)"; corroborated by OAC 4101:8-34-01 (Residential Code of Ohio, Section 3401), effective April 15, 2024 (Ohio Administrative Code · read 2026-08-02): https://codes.ohio.gov/ohio-administrative-code/rule-4101:1-35-01. Ohio, OAC 4101:1-35-01, Ohio Building Code referenced standards (effective October 15, 2025) (Ohio Administrative Code · read 2026-08-02): https://codes.ohio.gov/assets/laws/administrative-code/rules/4101/1/4101$1-35-01_eff_10_15_25.pdf. Oklahoma, OAC 748:20-6-1 (IRC 2024 permanent rule) (State of Oklahoma · read 2026-10-16): https://oklahoma.gov/content/dam/ok/en/oubcc/documents/rules/2026%2009%2014%20IRC%202024%20Permanent%20Rule.pdf. Oregon, Oregon: the document this tool's refusal names (Oregon.gov · read 2026-10-07): https://www.oregon.gov/bcd/codes-stand/Documents/26oesc-table1-E.pdf. South Carolina, South Carolina: the document scheduling the 2023 NEC (South Carolina LLR · read 2026-08-02): https://llr.sc.gov/bcc/PDFfiles/State%20Register%20-%20May%2022,%202026.pdf. South Carolina, Chapter 8, Regulation 8-1200, International Residential Code (South Carolina Statehouse · read 2026-08-02): https://www.scstatehouse.gov/coderegs/Chapter%208.pdf. South Carolina, 2021 International Residential Code, Chapter 1 Scope and Administration (International Code Council · read 2026-10-27): https://codes.iccsafe.org/content/IRC2021P2/chapter-1-scope-and-administration. South Carolina, 2021 International Residential Code, Chapter 34 General Requirements (International Code Council · read 2026-10-27): https://codes.iccsafe.org/content/IRC2021P2/chapter-34-general-requirements. South Carolina, Building Codes Council Frequently Asked Questions (South Carolina LLR · read 2026-10-27): https://llr.sc.gov/bcc/faq.aspx. South Carolina, Building Codes in Effect for South Carolina (12/2022) (South Carolina LLR · read 2026-10-27): https://www.llr.sc.gov/BCC/PDFfiles/Building%20Codes%20in%20Effect%20for%20South%20Carolina.pdf. South Dakota, South Dakota's adoption of the 2023 NEC (South Dakota DLR · read 2026-10-17): https://dlr.sd.gov/electrical/default.aspx. South Dakota, ARSD 20:44:14:01(11)(a) (South Dakota Electrical Commission, general definitions), effective November 12, 2024 (South Dakota Legislature · read 2026-08-02): https://sdlegislature.gov/api/Rules/Rule/20:44:14:01.html?all=true. Texas, Texas's adoption of the 2026 NEC (Texas Department of Licensing and Regulation · read 2026-10-06): https://www.tdlr.texas.gov/news/rulemaking/2026/09/01/commission-adopts-rules-12/. Texas, Texas Local Government Code chapter 214 (Texas Legislature Online · read 2026-10-17): https://statutes.capitol.texas.gov/Docs/LG/htm/LG.214.htm. Texas, 16 TAC Section 73.100 as proposed, Texas Register, March 20, 2026 (adopted without changes to the proposed text) (Texas Register · read 2026-10-17): https://www.sos.state.tx.us/texreg/archive/March202026/Proposed%20Rules/16.ECONOMIC%20REGULATION.html. Utah, Utah's adoption of the 2023 NEC (Utah Legislature · read 2026-08-02): https://le.utah.gov/xcode/Title15A/Chapter2/15A-2-S103.html. Utah, Utah Code 15A-3-601(7) (NEC amendments) and, separately, 15A-3-206(21) (IRC amendments), both effective July 1, 2025 (Utah Legislature · read 2026-08-02): https://le.utah.gov/xcode/Title15A/Chapter3/15A-3-S601.html. Virginia, Virginia's adoption of the 2020 NEC (Virginia DHCD · read 2026-08-02): https://www.dhcd.virginia.gov/codes. Virginia, 13VAC5-63-210, the Virginia Residential Code (Residential Group R-5) (Virginia Law · read 2026-08-02): https://law.lis.virginia.gov/admincode/title13/agency5/chapter63/section210/. Virginia, 13VAC5-63-300(B) (Virginia Construction Code, Chapter 27 Electrical, amending the IBC) and, separately, 13VAC5-63-210(R) VCC Section 310.8 item 116 (amending the IRC) (Virginia Law · read 2026-08-02): https://law.lis.virginia.gov/admincode/title13/agency5/chapter63/section300/. Washington, WAC 296-46B-010 (Washington State Legislature · read 2026-10-16): https://app.leg.wa.gov/wac/default.aspx?cite=296-46B-010. Washington, AO 25-31, proposed amendments to chapter 296-46B WAC (Washington State Department of Labor and Industries · read 2026-10-17): https://www.lni.wa.gov/rulemaking-activity/AO25-31/2531Proposal.pdf. Washington, AO 25-31, CR-102 proposed rule making filing (Washington State Department of Labor and Industries · read 2026-10-17): https://www.lni.wa.gov/rulemaking-activity/AO25-31/2531CR102.pdf. West Virginia, Home page (West Virginia Fire Marshal · read 2026-08-02): https://firemarshal.wv.gov/. Wisconsin, Wis. Admin. Code SPS 316.007 (Register September 2026 No. 849) (Wisconsin Legislature · read 2026-10-16): https://docs.legis.wisconsin.gov/code/admin_code/sps/safety_and_buildings_and_environment/301_319/316.pdf
- NFPA's documents on 210.8(F)
- NFPA, TIA 20-19 (NFPA · read 2026-08-02): https://docinfofiles.nfpa.org/files/AboutTheCodes/70/TIA_70_20_19.pdf. NFPA, NFPA Standards Council Decision (Final) D#25-5 (NFPA · read 2026-08-02): https://docinfofiles.nfpa.org/files/AboutTheCodes/70/FD_D25_5_SC_25_8_6_o_1_o_3_o_5_NFPA_70.pdf. NFPA, TIA 20-13 (NFPA): https://docinfofiles.nfpa.org/files/AboutTheCodes/70/TIA_70_20_13.pdf. NFPA, TIA 23-3 (NFPA): https://docinfofiles.nfpa.org/files/AboutTheCodes/70/TIA_70_23_3.pdf
- The adoption table's documents this page shows
- Alabama, State Building Code page; State Building Code page (scope); State Building Code page (houses) (Alabama Division of Construction Management · read 2026-10-16): https://dcm.alabama.gov/bldg_code.aspx. Alaska, 8 AAC 70.025; 8 AAC 70.010 (scope) (Alaska Legislature · read 2026-10-16): https://www.akleg.gov/basis/aac.asp?media=print&secStart=8.70.010&secEnd=8.70.100. Arizona, A.R.S. 11-861 (Arizona Legislature · read 2026-10-16): https://www.azleg.gov/ars/11/00861.htm. Arkansas, 17 CAR Section 210-601 (Arkansas Code of Rules · read 2026-10-10): https://codeofarrules.arkansas.gov/Rules/Rule?levelType=section&titleID=17&chapterID=289&subChapterID=409&partID=1299&subPartID=8221§ionID=54198. California, 2025 California Electrical Code, California amendments (rev. 2025-11-20) (California Department of General Services · read 2026-10-16): https://www.dgs.ca.gov/-/media/Divisions/BSC/02-Codes/2025-CEC_rev2025-11-20_locked.docx. California, Codes page (California Department of General Services · read 2026-10-16): https://www.dgs.ca.gov/bsc/codes. Colorado, 3 CCR 710-1, Rule 1.5 A (version effective 07/15/2026); 3 CCR 710-1, Rule 1.5 A (Colorado Secretary of State · read 2026-10-16): https://www.sos.state.co.us/CCR/GenerateRulePdf.do?ruleVersionId=12606&fileName=3%20CCR%20710-1. Connecticut, 2022 Connecticut State Building Code (Connecticut Portal · read 2026-10-16): https://portal.ct.gov/das/-/media/das/office-of-state-building-inspector/2022-state-codes/2022-csbc-final.pdf. Connecticut, State Building Code regulations page (Connecticut Portal · read 2026-10-16): https://portal.ct.gov/das/home/office-of-state-building-inspector/connecticut-state-building-code/regulations. Connecticut, Building and Fire Code Adoption Process page (Connecticut Portal · read 2026-10-16): https://portal.ct.gov/dascodechange. Delaware, 1 DE Admin. Code 701, section 3.1.42; 1 DE Admin. Code 701, section 1.2 (Delaware Administrative Code · read 2026-10-16): https://regulations.delaware.gov/api/file/download/630432c8-5287-4485-9617-22c686fddaa4. Florida, 2023 Florida Building Code, Building, 8th Edition, Chapter 35 (International Code Council · read 2026-10-16): https://codes.iccsafe.org/content/FLBC2023P1/chapter-35-referenced-standards. Florida, Fla. Admin. Code R. 61G20-1.001 (Florida Administrative Code and Register · read 2026-10-16): https://www.flrules.org/gateway/readFile.asp?sid=0&tid=30581498&type=1&file=61G20-1.001.doc. Florida, 9th Edition (2026) FBC workplan, August 2026 (Florida Building Commission · read 2026-10-16): https://www.floridabuilding.org/fbc/commission/FBC_0726/Commission/2026_FBC_Workplan_August_2026.pdf. Georgia, Georgia State Amendments to the National Electrical Code (2023 Edition), revised January 1, 2026 (Georgia DCA · read 2026-10-16): https://dca.georgia.gov/document/document/nec-2026-amendment-packet-2023-edition/download. Georgia, Memorandum, December 2, 2024 (Georgia DCA · read 2026-10-16): https://dca.georgia.gov/document/public-notices/memo-nec-and-ibc-amendment-effective-jan-1-2025/download. Hawaii, Council letter of March 31, 2022, with the Hawaii State Electrical Code effective March 15, 2022 (Hawaii AGS · read 2026-10-16): https://ags.hawaii.gov/wp-content/uploads/2021/12/StateElectricalCode_03152022.pdf. Idaho, Idaho Code 54-1001 (Idaho Legislature · read 2026-10-16): https://legislature.idaho.gov/statutesrules/idstat/Title54/T54CH10/SECT54-1001/. Idaho, House Bill 337 (2023), Section 16 (Idaho Legislature · read 2026-10-16): https://legislature.idaho.gov/wp-content/uploads/sessioninfo/2023/legislation/H0337.pdf. Illinois, Illinois Codes page (Illinois Capital Development Board · read 2026-10-16): https://cdb.illinois.gov/business/codes.html. Illinois, Public Act 103-0510 (Illinois General Assembly · read 2026-10-16): https://www.ilga.gov/documents/legislation/publicacts/103/PDF/103-0510.pdf. Indiana, Rules of the Fire Prevention and Building Safety Commission, 675 IAC 17 (State of Indiana · read 2026-10-16): https://www.in.gov/dhs/boards-and-commissions/fpbsc-rules/. Indiana, LSA #26-62, Notice of Second Public Comment Period (Indiana Administrative Rules · read 2026-10-16): https://iar.iga.in.gov/register/20260617-IR-675260062SNA. Iowa, House File 2800 (2026), Iowa Code 103.1(12A) (Iowa Legislature · read 2026-10-16): https://www.legis.iowa.gov/docs/publications/LGE/91/HF2800.pdf. Iowa, Electrical Permits and Inspections page (Iowa Department of Inspections, Appeals, and Licensing · read 2026-10-16): https://dial.iowa.gov/licenses/building/electrical-permits-inspections. Kansas, K.A.R. 22-1-3, Kansas Fire Prevention Code (Kansas State Fire Marshal · read 2026-10-16): https://www.firemarshal.ks.gov/DocumentCenter/View/126/KAR-22-1---Kansas-Fire-Prevention-Code-PDF. Kentucky, Notice, October 7, 2024: 2023 National Electrical Code (Kentucky Department of Housing, Buildings and Construction · read 2026-10-16): https://dhbc.ky.gov/Documents/2023%20NEC%20Update%20Announcement.pdf. Kentucky, 2018 Kentucky Building Code, Fourth Edition, referenced standards (Kentucky Department of Housing, Buildings and Construction · read 2026-10-16): https://dhbc.ky.gov/Documents/2018%20Kentucky%20Building%20Code%204th%20Ed.pdf. Louisiana, LUCCC rules compilation, August 1, 2026 (LAC 17:I.115) (Louisiana State Uniform Construction Code Council · read 2026-10-16): https://luccc.louisiana.gov/wp-content/uploads/LUCCC_blue-book_08012026.pdf. Louisiana, Louisiana Construction Code information sheet, revised 08/06/2026 (Louisiana State Uniform Construction Code Council · read 2026-10-16): https://luccc.louisiana.gov/wp-content/uploads/2025/11/LSUCCC_Louisiana-Construction-Code-Information.pdf. Maine, 02-318 CMR Chapter 120, Electrical Installation Standards (2026 NEC) (State of Maine · read 2026-10-16): https://www.maine.gov/pfr/professionallicensing/sites/maine.gov.pfr.professionallicensing/files/inline-files/Adopted%20Chapter%20120%20%28repeal%20and%20replace%29_0.pdf. Maryland, Current Adopted Building-Related Codes in the State of Maryland (3/18/2026) (Maryland Department of Labor · read 2026-10-16): https://www.labor.maryland.gov/labor/build/buildcodematrix.pdf. Maryland, Plumbing, Electrical and Mechanical Codes page (Maryland Department of Labor · read 2026-10-16): https://labor.maryland.gov/labor/build/buildmech.shtml. Massachusetts, Massachusetts Electrical Code page (Commonwealth of Massachusetts · read 2026-10-16): https://www.mass.gov/info-details/massachusetts-electrical-code. Michigan, Michigan Administrative Code, R 408.30801 (Michigan Administrative Rules · read 2026-10-16): https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R+408.30801++to+408.30880.pdf. Michigan, Code Books page (State of Michigan · read 2026-10-16): https://www.michigan.gov/en/lara/bureau-list/bcc/rules-acts/codes/code-books. Minnesota, Electrical codes and standards page (Minnesota Department of Labor and Industry · read 2026-10-16): https://dli.mn.gov/business/electrical-contractors/electrical-codes-and-standards. Minnesota, Minn. R. 1315.0200 (Minnesota Office of the Revisor of Statutes · read 2026-10-16): https://www.revisor.mn.gov/rules/1315.0200/. Minnesota, Fact sheet: electrical code (Minnesota Department of Labor and Industry · read 2026-10-16): https://www.dli.mn.gov/sites/default/files/pdf/fs-electrical-code.pdf. Mississippi, Senate Bill 2378 (2014) (Mississippi Legislature · read 2026-10-16): https://billstatus.ls.state.ms.us/documents/2014/html/SB/2300-2399/SB2378SG.htm. Missouri, RSMo 324.925 (Missouri Revisor of Statutes · read 2026-10-16): https://revisor.mo.gov/main/OneSection.aspx?section=324.925. Montana, ARM 24.301.401 (AMD 2026-95, effective 09/26/2026) (Montana Secretary of State, Administrative Rules of Montana · read 2026-10-16): https://rules.mt.gov/browse/collections/aec52c46-128e-4279-9068-8af5d5432d74/policies/9a769ee6-ecd8-482f-8646-19e494b255ec. Montana, Current Codes page (Montana Department of Labor and Industry, Building and Commercial Measurements Bureau · read 2026-10-16): https://bsd.dli.mt.gov/building-codes-permits/current-codes. Nebraska, Neb. Rev. Stat. 81-2104(5) (Nebraska Legislature · read 2026-10-16): https://nebraskalegislature.gov/laws/statutes.php?statute=81-2104. Nebraska, State Act Update and 2023 Code Adoption (Nebraska State Electrical Division · read 2026-10-16): https://electrical.nebraska.gov/state-act-update-2023-code-adoption. Nevada, Adopted Codes (Nevada State Public Works Division · read 2026-10-16): https://publicworks.nv.gov/uploadedFiles/publicworksnvgov/content/Documents/Permitting_Code_Enforcement/2024%20Adopted_Codes.pdf. Nevada, Regulation R072-24 (NAC 341.045) (Nevada Legislature · read 2026-10-16): https://www.leg.state.nv.us/Register/2024Register/R072-24AP.pdf. New Hampshire, RSA 155-A:1, IV (New Hampshire General Court · read 2026-10-16): https://www.gencourt.state.nh.us/rsa/html/XII/155-A/155-A-1.htm. New Hampshire, 2025 Laws, chapter 135 (HB 134) (New Hampshire General Court · read 2026-10-16): https://gc.nh.gov/bill_status/pdf.aspx?id=16527&q=billVersion. New Jersey, Current Construction Codes (State of New Jersey · read 2026-10-16): https://www.nj.gov/dca/codes/codreg/current.shtml. New Jersey, N.J.A.C. 5:23-3.16, history (State of New Jersey · read 2026-10-16): https://nj.gov/dca/codes/codreg/pdf_regs/njac_5_23_3.pdf. New Mexico, 14.10.4 NMAC (New Mexico SRCA · read 2026-10-16): https://www.srca.nm.gov/parts/title14/14.010.0004.html. New York, 2025 Residential Code of New York State, Chapter 44 (New York Department of State · read 2026-10-16): https://dos.ny.gov/system/files/documents/2025/07/2025rcnys_noa_2025-07-24_compressed.pdf. New York, Adoption of the 2025 Uniform Fire Prevention and Building Code (New York Department of State · read 2026-10-16): https://dos.ny.gov/system/files/documents/2026/02/2025-uniform-code-adoption.pdf. North Carolina, State Electrical Code and Interpretations (North Carolina OSFM · read 2026-10-16): https://www.ncosfm.gov/codes/state-electrical-division/state-electrical-code-and-interpretations. North Carolina, 2020 State Electrical Code amendments, compact version (North Carolina OSFM · read 2026-10-16): https://www.ncosfm.gov/media/2464/open. North Dakota, N.D. Admin. Code 24.1-02-01-02 (North Dakota Legislative Branch · read 2026-10-16): https://ndlegis.gov/information/acdata/pdf/24.1-02-01.pdf. North Dakota, Laws and Rules page (North Dakota State Electrical Board · read 2026-10-16): https://www.ndseb.com/laws-rules/. Ohio, OAC 4101:1-35-01, Ohio Building Code referenced standards (effective October 15, 2025) (Ohio Administrative Code · read 2026-10-16): https://codes.ohio.gov/assets/laws/administrative-code/rules/4101/1/4101$1-35-01_eff_10_15_25.pdf. Ohio, OAC 4101:8-34-01, Residential Code of Ohio (Ohio Administrative Code · read 2026-10-16): https://codes.ohio.gov/ohio-administrative-code/rule-4101:8-34-01. Oklahoma, OAC 748:20-10-1 (NEC 2023 permanent rule) (State of Oklahoma · read 2026-10-16): https://oklahoma.gov/content/dam/ok/en/oubcc/documents/rules/2022%2009%2014%20NEC%202023%20Permanent%20Rule.pdf. Oklahoma, News: 2023 NEC Code (State of Oklahoma · read 2026-10-16): https://oklahoma.gov/cib/news/2023-nec-code.html. Oklahoma, OAC 748:20-6-1 (IRC 2024 permanent rule) (State of Oklahoma · read 2026-10-16): https://oklahoma.gov/content/dam/ok/en/oubcc/documents/rules/2026%2009%2014%20IRC%202024%20Permanent%20Rule.pdf. Oregon, OESC adoption page (Oregon.gov · read 2026-10-07): https://www.oregon.gov/bcd/codes-stand/Pages/oesc-adoption.aspx. Pennsylvania, 34 Pa. Code 403.21; 34 Pa. Code 403.21, source note (Pennsylvania Code and Bulletin · read 2026-10-16): https://www.pacodeandbulletin.gov/secure/pacode/data/034/chapter403/s403.21.html. Pennsylvania, 2021 International Building Code, Chapter 35 Referenced Standards (International Code Council · read 2026-10-16): https://codes.iccsafe.org/content/IBC2021P2/chapter-35-referenced-standards. Rhode Island, 510-RICR-00-00-5, Rhode Island Electrical Code (Rhode Island Secretary of State · read 2026-10-16): https://rules.sos.ri.gov/Regulations/part/510-00-00-5. South Carolina, Building Codes in Effect for South Carolina (12/2022); Building Codes in Effect for South Carolina (12/2022), the mandatory codes (South Carolina LLR · read 2026-10-16): https://www.llr.sc.gov/BCC/PDFfiles/Building%20Codes%20in%20Effect%20for%20South%20Carolina.pdf. South Carolina, Chapter 8, Regulation 8-1200, International Residential Code; Chapter 8, Regulation 8-1250, IRC Section E3902 (South Carolina Statehouse · read 2026-10-27): https://www.scstatehouse.gov/coderegs/Chapter%208.pdf. South Dakota, Electrical Tool Box page (South Dakota DLR · read 2026-10-16): https://dlr.sd.gov/electrical/tool_box.aspx. South Dakota, ARSD 20:44:14:01(11) (South Dakota Legislature · read 2026-10-16): https://sdlegislature.gov/api/Rules/20:44:14:01.html. Tennessee, Tenn. Comp. R. & Regs. 0780-02-01-.02 (July 2025 revision) (Tennessee Secretary of State · read 2026-10-16): https://publications.tnsosfiles.com/rules/0780/0780-02/0780-02-01.20250714.pdf. Tennessee, Currently Adopted Codes (State of Tennessee · read 2026-10-16): https://www.tn.gov/commerce/fire/codes-enforcement/history.html. Texas, Adopted Rules, 16 TAC §73.100 (August 28, 2026) (Texas Register · read 2026-10-06): https://www.sos.state.tx.us/texreg/archive/August282026/Adopted%20Rules/16.ECONOMIC%20REGULATION.html. Utah, Utah Code 15A-2-103 (version effective 7/1/2026) (Utah Legislature · read 2026-10-16): https://le.utah.gov/xcode/Title15A/Chapter2/C15A-2-S103_2026050620260701.html. Utah, H.B. 313 (2025), Enrolled Copy (Utah Legislature · read 2026-10-16): https://le.utah.gov/Session/2025/bills/enrolled/HB0313.pdf. Vermont, 2025 Vermont Electrical Safety Rules; 2025 Vermont Electrical Safety Rules, Section 2(c) (Vermont Division of Fire Safety · read 2026-10-16): https://firesafety.vermont.gov/sites/firesafety/files/Rules/2025%20Vermont%20Electrical%20Safety%20Rules.pdf. Virginia, 13VAC5-63-10; 13VAC5-63-10 (scope); 13VAC5-63-10, historical notes (Virginia Law · read 2026-10-16): https://law.lis.virginia.gov/admincode/title13/agency5/chapter63/section10/. Virginia, 13VAC5-63-210, the Virginia Residential Code (Residential Group R-5) (Virginia Law · read 2026-10-27): https://law.lis.virginia.gov/admincode/title13/agency5/chapter63/section210/. Virginia, 2021 International Building Code, Chapter 35 Referenced Standards (International Code Council · read 2026-10-16): https://codes.iccsafe.org/content/IBC2021P2/chapter-35-referenced-standards. Washington, WAC 296-46B-010 (Washington State Legislature · read 2026-10-16): https://app.leg.wa.gov/wac/default.aspx?cite=296-46B-010. Washington, WSR 24-05-085 (Washington State Legislature · read 2026-10-16): https://lawfilesext.leg.wa.gov/law/wsr/2024/05/24-05-085.htm. West Virginia, 87CSR4, State Building Code (West Virginia Fire Marshal · read 2026-10-16): https://firemarshal.wv.gov/media/39311/download?inline=. Wisconsin, Wis. Admin. Code SPS 316.007 (Register September 2026 No. 849); SPS 316.007 history note (Wisconsin Legislature · read 2026-10-16): https://docs.legis.wisconsin.gov/code/admin_code/sps/safety_and_buildings_and_environment/301_319/316.pdf. Wyoming, Rules and Statutes page (Wyoming State Fire Marshal · read 2026-10-16): https://wsfm.wyo.gov/electrical-safety/rules-statutes-and-jurisdictions. Wyoming, W.S. 35-9-120(a) (Wyoming Legislature · read 2026-10-16): https://wyoleg.gov/NXT/gateway.dll/2025%20Wyoming%20Statutes/2025%20Titles/1921/1996/1997. District of Columbia, Integrated Codes page (District of Columbia Department of Buildings · read 2026-10-16): https://dob.dc.gov/node/1613981
The code sections those sources name, each with the edition and the page the book prints it on:
| Code and edition | Section | Printed page |
|---|---|---|
| NEC 2023 | 210.8(F) | 70-81 |
| NEC 2026 | 210.8(F) | 70-96 |
| NEC 2020 | 210.8(F) | 70-63 |
This answers 210.8(F) only, for dwellings, on statewide adoption. It is not a general GFCI checker: 210.8(A) reaches receptacles and carries no HVAC exception, 210.8(B) governs other-than-dwelling work with different thresholds, and a NOT REQUIRED here does not clear an outlet under either. Cities and counties amend separately and this tool cannot see that. Three groups cannot be answered no matter how much reading is done: states that route dwelling electrical work to the International Residential Code or adopt it beside the NEC with no document we hold saying which governs a house, a code whose outdoor-outlet provisions are numbered in the E3902 series, which we do not hold; states on an edition older than 2020, where 210.8(F) does not exist and we hold no primary for those editions; and states with no single statewide answer to give, such as Arizona, Maryland and Hawaii. On the 2026 edition the tool answers from that edition's own text, for the states whose own amendment and listing it holds. Your AHJ has final say, and where this tool refuses, that is the answer to act on rather than a gap to fill with a national default.
The full receipt, with every source and how each is cross-checked, is on the interactive Outdoor HVAC GFCI Requirement.
Ask your assistant
The one rule that makes it reliable: name Intry in your question. That is what tells Claude to run the outdoor_hvac_gfci tool and answer with the real number, the verdict, and the citation. Leave Intry out and Claude may just guess from memory, which is exactly what you are trying to avoid. Type something like:
“Use Intry to check whether an outdoor condenser needs GFCI protection in Georgia after 1 September 2026.”
“Ask Intry whether the HVAC GFCI exception still applies in Texas, and which document says so.”
What it refuses or sets aside
For a state that rewrote NEC 210.8(F) in its own words, such as Oregon, it declines to apply the national rule and says what that state's code does instead.
Inputs
| Field | Required | Accepts | Range | What it is |
|---|---|---|---|---|
| state | yes | string | US state or District of Columbia, spelled out (e.g. 'Georgia'). | |
| occupancy | yes | dwelling, other | 210.8(F) covers dwellings only. 'other' returns a refusal pointing at 210.8(B). | |
| equipment | yes | listed-hvac, lighting-outlet, submersible-well-pump, snow-melting-deicing, other-outlet | What the outlet supplies. 'listed-hvac' is the condenser/heat-pump case the 2026 sunset is about. 'snow-melting-deicing' is written out of 210.8(F) by its own stem and handed to 426.28/427.22, so it returns a refusal. | |
| connection | yes | hardwired, cord-and-plug | REQUIRED, and it changes which rule governs. 210.8(F) is about outdoor OUTLETS, hardwired included. 210.8(A) is about RECEPTACLES, so a cord-and-plug unit is ALSO reached by 210.8(A) 'Outdoors' (item (3) in the 2023 edition, (4) in the 2026), which has no HVAC exception and no ampere ceiling. This tool refuses on cord-and-plug rather than answer from a section that cannot speak for the other one. Ask the user if you do not know; do not assume. | |
| phase | yes | single, three | REQUIRED. Every edition of 210.8(F) we have read is scoped to 'single-phase branch circuits', so a three-phase circuit returns a refusal rather than an answer. | |
| workType | optional | new, replacement | New installation, or replacing existing equipment (which triggers its own paragraph from the 2023 edition onward). | |
| branchCircuitAmps | optional | number | 5 to 400 | Branch-circuit rating in amperes. 210.8(F) reaches 50 A or less on the 2020 and 2023 editions and 60 A or less on the 2026 edition. |
| voltsToGround | optional | number | 12 to 600 | Volts to ground. 210.8(F) reaches 150 V or less to ground. |
| location | optional | outdoors, garage-at-or-below-grade, accessory-building, boathouse | Outlet location. | |
| energizationDate | optional | string | ISO date (YYYY-MM-DD) the circuit is energised or inspected. If omitted, today's date is used and the readout says so; give the job's own date when it is not today. The answer can turn on this date: at the NEC's own 2026-09-01 sunset where a state has not amended the exception, and on the date a state's adopted edition changed. A malformed date, or one that is not a calendar day, is refused. |
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Every answer comes with the cited NEC section together with your state's own amendment to it, so you can check it or show an inspector. The numbers come from the same calculator we run on intrysys.com, and our automated checks hold its answers against their sources before anything goes live, for the cases the checks cover, not for every input you can enter.