{"id":30439,"date":"2023-01-05T12:45:33","date_gmt":"2023-01-05T11:45:33","guid":{"rendered":"https:\/\/www.gt-engineering.it\/normative-tecniche\/%tipologia_normativa%\/c22-2-n-286-industrial-control-panels-and-assemblies\/"},"modified":"2023-06-19T19:43:09","modified_gmt":"2023-06-19T18:43:09","slug":"c22-2-n-286-industrial-control-panels-and-assemblies","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/csa-canada-standards\/c22-2-n-286-industrial-control-panels-and-assemblies\/","title":{"rendered":"C22.2 N\u00b0 286: Industrial control panels and assemblies"},"content":{"rendered":"\n\n \n \n \n
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C22.2 N\u00b0286: 2023<\/strong> is the now reference standard for the construction of Industrial Control Panels in Canada. It is the equivalent of UL 508A for USA.<\/p>\n

In the past, the reference Standard was C22.2 N\u00b014: Industrial control equipment<\/strong>. But that was not really a Standard for the conformity of control panels for machinery, since it was written for the conformity of electrical components like contactors (manual motor controllers in North American technical language).<\/p>\n

The second edition<\/strong> was published in 2017 and it contained a different approach to cable ampacity, compared with UL 508A. The latter does not require cable ampacity compensation for more than 3 cables next to each other. That means a copper\u00a0 AWG 10 conductor has an ampacity of 30 A; please refer to Table 28.1 of UL 508A. If 9 conductors run inside a control panel wiring thought, the ampacity is still 30 A.<\/p>\n

Table 7 of C22.2 N\u00b0286 second edition was quite different comparted with Table 28.1 of UL 508A. A copper AWG 10 conductor had an ampacity of 27 A if the control panel was ventilated. That ampacity has to be corrected for the number of conductors in a wiring thought according to table 8. That means, if 9 cables run inside a control panel wiring thought, the ampacity becomes 19 A: it is downgraded!<\/p>\n

An extreme situation was for a non ventilated panel: in case of 9 copper AWG 10 conductors running in a wiring thought, the ampacity becomes 13 A! Quite a difference with respect to 30 A according to UL 508A.<\/p>\n

The new edition (third) of C22.2 N\u00b0 286 was published in June 2023.<\/strong> It has a completely revised Table 7, quite similar to Table 28.1 of UL 508A. From this point of view the two standards are aligned.<\/p>\n

 <\/p>\n

New aspects<\/strong> contained in the third edition of C22.2 N\u00b0 286:<\/p>\n

    \n
  1. expansion of requirements for connection means;<\/li>\n
  2. additional requirements for ferrules and pigtail adapters;<\/li>\n
  3. clarifications for requirements for Class 2 (non-safety control devices) components;<\/li>\n
  4. additional compliance criteria for panels and assemblies for use outside of the assumed 0-40\u00b0 C ambient range;<\/li>\n
  5. expansion of the short-circuit current rating {SCCR) determination criteria;<\/li>\n
  6. revisions to required SCCR markings;<\/li>\n
  7. removal of motor control centre requirements; and<\/li>\n
  8. addition of strain relief and abnormal operations tests.<\/li>\n<\/ol>\n<\/div> <\/div>\n \n \n
    <\/div>\n \n\n <\/div>\n <\/section>\n\n \n","protected":false},"excerpt":{"rendered":"

    C22.2 N\u00b0286 is the now reference standard for the construction of Industrial Control Panels in Canada. 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