I'm going to assume you ONLY want to see the raceway and not all the other Electrical Fixtures in your systems view, hence your question.
This is done through Worksets. All your Electrical View components in your power views should be on a POWER Workset (or whatever you choose to label these as). Then all your systems components should be on their own Workset (SYSTEMS workset?). If this is being utilized, you can shut off the POWER Workset in the Systems view and turn ON the Electrical Fixture category in your visibility graphics. Then you'll only see the Electrical Fixtures that you place in Systems workset.
HTH,
~BMC~