Revit Systems provides the ability to circuit fire alarm devices. You can add a parameter to input load information, and create a schedule to tabulate the total load on each circuit.
Revit Systems also provides the ability to tabulate circuit lengths.
HTH,
Martin Schmid, P.E.
Autodesk Consulting
Martin Schmid
Product Line Manager
Mechanical Detailing and Electrical Design
Architecture, Engineering, and Construction
Autodesk, Inc.