Relevant conversation:
https://forums.autodesk.com/t5/revit-mep-forum/electrical-equipment-equipment-switch/m-p/8695950
Revit has a category of electrical equipment called "equipment switch".
It is natural to assume this category is intended for switches and disconnects, but the category doesn't support development of families that actually work properly.
A switch should make itself available for downstream connection but families set to "equipment switch" cannot be so connected on the load side.
The workaround is to model switches as the "panelboard" class with a maximum number of breakers set to the same number of poles as the switch supply side. This is very clumsy in my opinion.
Please add a secondary connection to this equipment class (same as the transformer class, but with secondary voltage locked to primary voltage)
