Appendix B Rule 12-3034

Rule 12-3034 2)
When a reduction in the number of insulated conductors is required, this Subrule intends that the reduction be made with the largest available insulated conductor size.

Δ Table B12-3
Examples of an octagonal 4 × 1-1/2 trade size box with 12 AWG insulated
conductors

Rule 12-3034 3)
As an example, a device having a depth of 4 cm occupies a space of 128 cm3, that is, 32 cm3 × 4.

Source: Appendix B Rule 12-3034, 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