In the US. Are other houses served by 100kVa pole transformer like the following?
For 100kVA pole transformer, assumed 2% impedance. 100,000VA / 240V / 0.02 = 20,083A short circuit current available.
Can 20kA initiate arc flash during shorting fault? Not by falling tools but by insects like lizards shorting the terminals?
I also want to point something out about this:
https://www.alabamapower.com/content/dam/alabamapower/Business/Services by Industry/Architects & Engineers/A-E-Fault-Currents-Tables-FINAL-8-2003.pdf
They assume 1/0 AL from the pole to the house, but it is very common for US POCOs to run #6, #4 or #2AL from the pole to a house, especially when they know that the home will never draw more then X number of amps. IE, an all gas home with a 125 amp service will probably never draw more then 50 amps.