Hi @Anonymous,
Have you used the Electrical (MEP) Fabrication Parts yet? If not, HERE is a very quick video overview, there are quite a few on YouTube.
To make use of this within Revit 2016 / 2017, simply follow the steps below.
Under you Systems Tab >> Fabrication >> Click on the Icon

This will then open the MEP Fabrication Parts Pallet, but yours would possibly still be empty.

[1] - Click on Settings... which will open the Fabrication Settings.
[2] - Click on the "Learn how to set fabrication configuration and services", this will open a page which will guide you and provide you with either Metric or Imperial Content for the Revit version you are using, either 2016 or 2017.
[3] - After installing the content (you might need to restart Revit), go to Systems Tab again >> Fabrications >> Settings... (as per [1]). Then select "Revit MEP Metric or Imperial Content".
[4] - Add Electrical: Wireway from the Unloaded Services to Loaded Services.
You'll then have all of the fittings which you require at your disposal.
I hope this helps! 
Rudi Roux
MSc | Digital Engineering Manager
LinkedIn
Revit Mechanical & Electrical Systems 2018 Certified Professional | Revit MEP & Architecture 2015 Certified Professional
AutoCAD 2015 Certified Professional | Autodesk Building Performance Analysis (BPA) Certificate
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