I think that locations "adopt" the code at there own pace...
Wisconsin didn't adopt the '99 code until March '99. I'm not sure if WV automatically adopts the new code or if there is legislation (like WI) that slows it down a bit.
As far as other states, try contacting your local AHJ... (Most would rather answer questions than tell you it's wrong after the fact...)
I'm installing AFCI's in the house I'm wiring now, and in the rest from now on... I figure it's close enough to 2002 to establish the habits now... and most won't be final-punched-out until 1-1-02 anyway...
Steve (sparky), what do you think?
