Electrical routing of what? Circuit boards? Cables and harnesses?
From what I recall Mentor Graphics for those areas required the company to create their own libraries of items and so you would have to, in large part, be trained by the using company for their standards. I don't believe it's a good fit for self-training. Unlike other programs which are usually a substitute for drafting, this is an extension of existing design experience - CAE rather than CAD.