Because dipsh*t Pieterse can't even put a plug onto a cable of a toaster but he's the Groot Meneer spokesman for ****ty.. eh I mean City Power. If the techs tell him the tripswitch flipped because it felt xenophobic, he'll believe them.
Yes they keep it top secret. I have pressed their techs in the past, they won't talk.
One did talk in the past and told me plainly they cut the power because people are using too much, and proceeded to show me the red-lined meter readings in the substation.
A common excuse is "cable theft" = "we are loadshedding"
Electricity supply and distribution is not exactly rocket science.. but these buffoons get it horribly wrong.