If I had to make a checklist of information to gather in the field for a short circuit calculation (and later on a Arc Flash Calculation) what would those be. I am looking for things like Utility transformer ratings X/R ratings.

Ok, short circuit calculation and arc flash calculation require different information. For example: for a short ckt calc, you do not need the protective device details (manufacturer, bkr size, trip, instantaneous, etc) whereas for arc flash you do.

The list can be extensive if you include all the equipment variables.

I would suggest you get Jim Phillips book as Chapter 4 details the data collection process needed for an arc flash hazard analysis.

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Please check http://www.arcadvisor.com/arcflash/short-circuit-equipment-data.html for typical equipment information required for short circuit study. You can also check http://www.arcadvisor.com/faq/arc-flash-data-collection-form.html for sample data collection form for arc flash analysis.