I am looking for free Electrical CAD software that can help me develop wiring diagrams, and diagrams containing symbols for motors, relays, lights, breakers etc.. To the best of my knowledge, schematic editors like EagleCAD and Fritzing are not very good with motors and breakers. I want to know what all free options are available. I would prefer something open-source, but it is not necessary and other kinds of software, such as commercial an freemium are also fine.
The CAD software of course should have drag and drop facility for electrical components. There should be a wide variety of Electrical components, such as fuses, breakers, motors, VFDs etc., which are not available with electronic CAD software. Allowing users to create and/or modify their own symbols would also be useful. Export as .pdf and .dwg may help too