Skip to content
Built4UIQ
Log inSign up free

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).

22 sections matching “E3906” for San Antonio, TX, the 2024 IRC and IBC

  • E3906.1

    Conductors Entering Boxes, Conduit Bodies or Fittings

    • Conductors entering boxes and fittings are protected from abrasion (NEC 314.17).

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

  • E3906.3

    Conductors and Cables Entering Through Raceways

    • Conductors in a complete raceway between boxes need no extra securing (NEC 314.17(B)(3)).

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

  • E3906.4

    Unused Openings

    • Unused openings are closed; metal plugs in nonmetallic boxes are recessed at least 1/4 in (NEC 110.12(A)).

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

  • E3906.5

    Flush-Mounted Installations

    • Boxes in noncombustible walls set back no more than 1/4 in; in combustible walls they're flush or project (NEC 314.20).

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

  • E3906.6

    Noncombustible Surfaces

    • Gaps around flush boxes in noncombustible surfaces are 1/8 in max (NEC 314.21).

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

  • E3906.7

    Surface Extensions

    • Surface extensions use a secured extension ring, or an identified cover with a flexible wiring method (NEC 314.22).

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

  • E3906.9

    Covers and Canopies

    • Every box ends up with a cover, plate, lampholder or canopy, attached with matching machine screws (NEC 314.25).

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

  • E3906.11

    Exposed Combustible Finish

    • Combustible finish exposed between a canopy and the box is covered where E4004.2 requires (NEC 314.25(B)).

    Works withE4004.2

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

  • E3906.1.1

    Insulated Fittings

    • Raceway conductors 4 AWG and larger enter through insulated bushings, smooth listed metal fittings or integral hubs (NEC 300.4(G)).

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

  • E3906.8.2

    Structural Mounting

    • Boxes on framing or grade are rigidly supported directly or with a brace (NEC 314.23(B)).

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

  • E3906.8.3

    Mounting in Finished Surfaces

    • Boxes in finished surfaces are held by identified clamps, anchors or fittings (NEC 314.23(C)).

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

  • E3906.8.4

    Raceway Supported Enclosures Without Devices or Fixtures

    • A raceway-supported box with no devices is 100 cu in max, held by two threaded conduits secured within 3 ft (18 in if all on one side) (NEC 314.23(E)).

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

  • E3906.8.5

    Raceway Supported Enclosures, With Devices or Luminaire

    • A raceway-supported box with a device or luminaire is 100 cu in max, held by two threaded conduits secured within 18 in; a single RMC/IMC may hold a light under strict limits (NEC 314.23(F)).

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

  • E3906.8.6

    Enclosures in Concrete or Masonry

    • Boxes embedded in concrete or masonry are corrosion-protected and securely embedded (NEC 314.23(G)).

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

  • E3906.8.2.1

    Nails and Screws

    • Nails and screws use outside brackets or back/side holes, or pass within 1/4 in of the back or ends (NEC 314.23(B)(1)).

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

  • E3906.8.2.2

    Braces

    • Metal braces are at least 0.020 in thick and corrosion-protected; wood braces at least nominal 1x2 (NEC 314.23(B)(2)).

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

  • E3904.4

    Raceways as Means of Support

    • Raceways support other things only if identified for it, carrying related Class 2 control wiring, or holding boxes per E3906.8.4/E3906.8.5 (NEC 300.11(C)).

    International Residential Code, 2024 · Chapter 39, Power and Lighting DistributionRead 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.

Check your plans against these codes

Start an application and get every flag with its section and fix.

Start an application