Joe,
Many employeers are using 70E for guidance in applying the rules that you have cited for the workplace.
The biggest problem in applying 70E is getting a "real world" available fault current. Many utilities give you a "worst case" fault current, which will always let you select equipment that will be in compliance with the NEC, but may lead to the selection of arc flash PPE that is not suitable for the incident energy. This is because the incident energy is related to the total time that the fault exists. If the fault current used in the PPE calculations is higher than what is actually available, then the trip time will be faster and the incident energy less that what is really going to happen.
Also, I forgot that if something is not covered by 1926 for construction work, then the general duty clause makes the rules in 1910 apply to us too.
Don
