NFPA 70E Annex D has calculations D.6.1 and D.6.2 that need a value for F (short-circuit current, kA) to do the calculation. The value has a qualification statement that says (for the range of 16kA to 50 kA). What do we do for values outside of this range, especially for values below the 16kA?
I must not have the latest standard, since I don't find annexs in my copy (NFPA70E-2000), but I did find the formula you mentioned, along with a statement that theseequations were derived in the IEEE paper by R.L. Doughty, T.E. Neal, and H.L. Floyd, II, "Predicting Incident Energy to Better Manage teh Electric Arc Hazard on 600V Power Distribution Systems", Record of Conference Papers IEEE IAS 45th Annual Petroleum and Chemical Industry Conference, September 28-30, 1998.
Perhaps you could find a copy of this to see if they adress the out of bounds amounts you refer to.
Re: NFPA 70E Annex D Out of Range SCA#90880 12/17/0410:19 AM12/17/0410:19 AM
He is not to be confused with Dr Raphael C Lee of the Electrical Trauma Research Program at the University of Chicago, http://etrp.bsd.uchicago.edu/areas/overview.html who has been a very notable pioneer in his own right for emergency and long-term severe electrical-burn treatment.
Re: NFPA 70E Annex D Out of Range SCA#90883 12/17/0410:44 PM12/17/0410:44 PM