Yes 70E should be mentioned. With the new arc flash standards everything else is now obsolete. Even though they have used the old guidelines for a base it is a lot more rigid in the safety standards. An outlet alone falls under class 1, 120 volt panels with a panelboards with 120 main and a residential meter base are class 2, up class 4 for 480 Volt swithgear. This standard envolves specialized training and PPE. Very costly.