Computing Pre Phase Currents

[davidwilliamedwards]

I'm trying to help out our MEP users with the problems with calculating per phase currents. As per

http://inside-the-system.typepad.com/my_weblog/2012/07/how-does-revit-compute-per-phase-currents.htm...

It seems as if this article tries to justify why the simple totals don't add up the values above. Is there any workaround? Is there another schedule template that does the totals differently?

Thanks

David William Edwards

TCFonts.com

[David_Robison · Accepted solution]

The math described at that link is correct. Hopefully your engineers know that, and understand that 10A + 10A is not always equal to 20A.

Adding up the totals differently would be wrong, so it is unlikely that you are going to find something to support that.

Transitioning to Revit from AutoCAD and Excel requires a lot of change in your workflows and standards. If you were calculating phase loads in amps by straight addition before, this change makes your calculations more correct. You will be better off changing your standards to match Revit's format rather than trying to make Revit produce your old schedule.