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Search the building code.

Every 2024 IRC section and the IBC as it loads, by number or topic, plus the local rules for your city. Free to search.

Detached houses, duplexes and townhouses up to 3 stories with their own exits use the IRC; every other building uses the IBC (IBC 101.2).

A random sample from 677 sections for San Antonio, TX, the 2024 IRC

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  • E3406.9

    Fine Stranded Conductors

    • Finer-than-Class-C stranded conductors need terminals identified for that class (NEC 110.14).

    International Residential Code, 2024 · Chapter 34, General RequirementsRead the full text (opens UpCodes in a new tab)

  • E3501.1

    Scope

    • Electrical definitions apply to Chapters 34 to 43; undefined terms fall back to R202, then ordinary meaning. 'Readily accessible' means reachable without tools (other than keys), climbing or ladders.
    • A bathroom is an area with a sink plus a toilet, urinal, tub, shower or bidet; a kitchen has a sink and permanent cooking provisions; a laundry area holds a laundry tray, washer or dryer.
    • A continuous load runs at maximum current for 3 hours or more; 'in sight from' means visible within 50 ft; the low-voltage contact limit is 15 V AC (21.2 V peak) or 30 V DC.
    • Location classes: dry (not normally damp), damp (sheltered but moist), wet (underground, in slabs on earth, saturated or exposed to weather).
    • A habitable room is for living, sleeping, eating or cooking, excluding baths, closets, halls and utility spaces; a clothes closet stores garments and its storage space is where combustibles can sit.

    International Residential Code, 2024 · Chapter 35, Electrical DefinitionsRead the full text (opens UpCodes in a new tab)

  • E3908.16

    Metal Boxes

    • Metal boxes get a dedicated EGC connection sized by the largest breaker in the box (NEC 250.148(C)).

    International Residential Code, 2024 · Chapter 39, Power and Lighting DistributionRead the full text (opens UpCodes in a new tab)

  • E3406.7

    Conductors of the Same Circuit

    • All conductors of a circuit, including neutral and grounding, run in the same raceway, cable or cord (NEC 300.3(B)).

    International Residential Code, 2024 · Chapter 34, General RequirementsRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.

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