Create electrical systems (circuits) to place devices, lighting fixtures, and electrical equipment in a project.
 Electrical panel
Electrical panel 
  (Wire)
(Wire)  (Cable Tray)
(Cable Tray)  (Conduit)
(Conduit)  (Parallel Conduits)
 (Parallel Conduits)  (Cable Tray Fitting)
 (Cable Tray Fitting)  (Conduit Fitting)
 (Conduit Fitting)  (Electrical Equipment)
 (Electrical Equipment)  (Device)
(Device)  (Lighting Fixture)
 (Lighting Fixture) 
