Here in Canada, home inspectors need to be licensed, and they cannot perform electrical inspections. I can't, even as a certified electrical contractor, perform electrical inspections - only the electrical inspector can.
What I do is give an "evaluation" with recommendations based on my experience and knowledge of the electrical code.
Not sure what the requirements would be in your state, but I would say a solid knowledge of wiring and electrical codes would be essential for you to do electrical consulting. Good Luck.
