G
Geordie Spark
Funny how it's more often the neutral (certainly in my experience with supply) - remember this being discussed on 2391 course - nobody could come up with a viable reason for it.
It's to do with the rotation of the electrons.
The live electrons all rotate in a clockwise direction thus helping to keep the terminal screws tight.
The neutral electrons rotate in an anti-clockwise direction which causes the terminal screws to loosen.
The solution to the problem is to make all neutral terminal screws left hand thread and and all live terminal screws right hand thread.