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Arc Flash Calculated Labels

Question asked by j_w_hines on Aug 20, 2019
Latest reply on Aug 23, 2019 by Steve Benton

I have a 4000A, 480V main service with 1200A feeder breakers.  These breakers have energy reduction mode and I can run the analysis with and without this.  For example, at a board, with the reduction switch turned ON, it is 4.2 Cal and Level 3, with the switch OFF, it is 5.1 Cal and still level 3.  For AF stickers, do you provide one with ON and one with OFF?  As transformers are not listed in 110, should transformers such as a 75kVA get a label or considered non-serviceable?