California:
Contractors Licenses: (Not including incidental like HVAC and Elevator)
Electrical (General) C-10
Electrical Sign C-45
Solar C-46
Low Voltage Systems C-7
Then there are
Certifications , (Yet, or if ever to be enforced) more like what you are talking about.
General Electrician
Residential Electrician
Voice Data Video Technician
Fire/Life Safety Technician
Nonresidential Lighting Technician
[This message has been edited by e57 (edited 07-24-2005).]