Retroactive Requirements

[czars]

Are there any retroactive requirements in the 2014 NEC? If so, what are they?

 

[augie47]

Under the '14, system identification might be considered to be retroactive IF a second system is added .'17 exempted identifying the old system.

 

[tom baker]

Panel schedules
Replacing receptacles, will need TR, WR, AFCI or GFCI if current rules require
service fault current
probably more, I will look in code book