viper57 wrote:
Looking at an arc flash study done on a 13.8kV SWGR line up with main breaker. The detailed study shows a significantly higher IE (44.8 cal/cm2) on the load side of some of the breakers than on the SWGR bus (22.8 cal/cm2). These breakers are feeding large motors (5000+HP). Just doesn't seem right.

What, if anything, might cause this?
Motor contribution is my guess, hard to tell without all the data. Possiblle you can adjust relay settings to lower this. Sounds like a good canidate for remote racking and switching.