You know, even though there are countless specialties in medicine, all MD's have the same exact state license. Even though a brain surgeon can legally operate on your knee, I doubt you would ask him to!

Electric work is something like that. Apart from the related "side" trades (alarms, CATV, phone, data, etc.), within the trade is everything from pulling rope to PLC's.

While I like to think that I have a broader range than most, I recognize that every task calls for different attitudes. So, when I am done hanging pipe, I will take a short break to "adjust my attitude" before I start pulling wire, etc.

I expect the distinctions between residential and general electricians to blur with time. Homes are getting to be far more complex; I've seen PLC's and VFD's in some. The guy who can only "rope" a house is a dying breed.