From the Design Master website:
Design Master Electrical RT: Electrical Calculations for Revit
Design Master Electrical RT is an add-in for Revit. It adds electrical calculations to your existing Revit model.
It runs on Revit MEP 2015, Revit 2016, Revit 2017 and Revit 2018.
One-Line Riser Diagrams
- Automatically generate a one-line riser diagram
- Unlimited customization to match your existing drafting style
- Feeder sizes and other labels updated as your electrical model is changed