I'm coming from having done IEEE 1584 calculations and I'm now starting to use ARCPRO. It is not clear to me whether I should input the available bolted fault current in ARCPRO or use this value to calculate the arcing current per IEEE 1584 and then input this lower value of arcing current into ARCPRO.

I would appreciate some advice.

There is little difference between arcing current and bolted current at medium or high voltage. I have also found that with typical inverse time-overcurrent protection, using the bolted current with slightly faster clearing results in higher incident energy that a lower current with slower clearing time. As a result, I use bolted fault currents with ARCPRO.

Thank you for the feedback.

My first attempts at using ARCPRO were to compare the results for a given example that I had already analyzed using IEEE 1584. I'm realizing that the subtle difference between arcing current and bolted fault for this one case will become irrelevent once I start using ARCPRO to study across a range of fault currents.