Construction codes of Ontario

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Number of insulated conductors in boxes

Number of insulated conductors in boxes Table 23 (See Rule 12-3034.) Table 23 (Concluded) Source: Table 23, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit store.csagroup.org

Openings in Guards

(1) Except as permitted in Sentences (2) and (3), openings through guards shall be of a size that prevents the passage of a spherical object having a diameter of 100 mm. (2) Except where they serve storage garages, guards in industrial occupancies are permitted to consist of, (a) a top railing, and (b) one […]

Openings in Loadbearing Walls

Openings in Loadbearing Walls (1) Openings in loadbearing walls greater than the required stud spacing shall be framed with lintels designed to carry the superimposed loads to adjacent studs. (2) Except as provided in Sentence 9.23.12.3.(2), where two or more members are used in lintels, they shall be fastened together with not less than 82 mm nails […]

Openings in Non-Loadbearing Walls

Openings in Non-Loadbearing Walls (1) Except as provided in Sentence (2), openings in non-loadbearing walls shall be framed with not less than 38 mm material the same width as the studs securely nailed to adjacent studs. (2) Openings for doors in non-loadbearing walls required to be fire separations with a fire-resistance rating shall be framed with the […]

Orientation of Studs

Orientation of Studs (1) Except as permitted in Sentences (2) and (3), all studs shall be placed at right angles to the wall face. (2) Studs on the flat are permitted to be used in gable ends of roofs that contain only unfinished space or in non-loadbearing interior walls within the limits described in Article […]

Outlet box supports

Outlet box supports (see Appendix B) 1) Except as permitted by Subrule 6), boxes and fittings shall be firmly secured to studs, joists, or similar fixed structural units other than wooden, metal, or composition lath, in accordance with this Rule. 2) Where ganged sectional boxes are used, they shall be secured to metal supports or […]

Outlet boxes

Outlet boxes (see Appendix B) 1) A box or an equivalent device shall be installed at every point of outlet, switch, or junction of conduit, raceways, armoured cable, or non-metallic-sheathed cable. 2) Non-metallic outlet boxes shall not be used in wiring methods using metal raceways or armoured or metal-sheathed cable, except where the boxes are […]