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1)Trying to find code related to ATS and overload protection.
2) How to properly size an upstream genset mounted breaker for a 600A ATS.
3) Another application, genset has 800A breakers feeding 400A and 600A ATS, is this acceptable?
 

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24-304 Transfer switches (see Appendix B)
(1) All transfer switches shall comply with the requirements of the supply authority.
(2) Automatic transfer switches used in essential electrical systems shall conform to the requirements of CSA
C22.2 No. 178.1 and, in addition, shall
(a) be electrically operated and mechanically held; and
(b) include means for safe manual operation.
 
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