The only question is: where will you encounter such many hundreds folds of over current faults in contemporary grid, with so many safety devices up stream?! Primary to secondary fault of the service transformer?! With fuses on the feeder lines?! Not likely!!!
Was that a type at the 8:50 point where a 200 kA fuse is shown for a 25 kA fault? I assume that was a 20 kA fuse as I don’t think a 200 kA fuse should blow under 25 kA of current.
They clearly show how each component is wired before each test. A wiring diagram wouldn't give you any additional information that you can't already see.
