CAN/CSA-C22.2 No. 60529:16

1A This Standard does not cover requirements for enclosure type designations. Requirements for enclosure type designations 1, 2, 3, 3R, 3S, 3X, 3RX, 3SX, 4, 4X, 5, 6, 6P, 12, 12K, and 13 are contained in CSA C22.2 No. 94.1 (or the applicable CSA C22.2 series Standard) and CSA C22.2 No. 94.2. 1B General requirements for electrical products are as indicated in CAN/CSA-C22.2 No. 0. 1C This Standard applies to enclosures for electrical equipment only when referenced by the applicable CSA Group Standard covering such equipment and is supplemental to the requirements of CSA C22.2 No. 94.1 and CSA C22.2 No. 94.2.