Great stuff, Paul!.
One thing I did notice from the first video, is the use of HRC fuselinks for motors and the like in farm buildings.
Having worked in many elderly dairy sheds recently, I've noticed a move away from these, in favour of single pole or 3 pole MCB's.
To illustrate what I often encounter, here is a pic of an older panel that I removed from a dairy shed that was upgraded about 2 weeks back:
It's all been torn out and a new panel installed with more room for cables and wiring and MCB protection.
There is some very good advice in these videos, especially with respect to "amateur improvisations" and looking out for overhead power lines, which are by default 11kV+ out in the rural areas.
Farmers have been killed here, stringing fencing wires across gullies, when the wire is cut, it has a habit of springing up into the power lines.
7 metre long irrigation pipes are also a worry around HV lines.
BTW, did anyone else notice, that the first plug in the video had two black wires, but not a green earth wire?