The better technical term for what South Africa has is rolling black-outs that increase in frequency (and ultimately duration) depending on the amount of load that needs to be shed.
South Africa also has actual load shedding, where industrial customers are asked then forced to reduce usage, but the black-outs are entirely different. They are region-by-region complete loss of power for all but the hospitals (but often take out hospitals and emergency services too).
Compounding this issue, the grid is not designed to be switched on and off frequently. While there is a set schedule for the rolling blackouts, transformers and other equipment will blow under the sudden loads, meaning your regional blackout may last a lot longer than planned. You may also get blackouts sooner or completely out of schedule for region, for which no explanation is given.
South Africa also has actual load shedding, where industrial customers are asked then forced to reduce usage, but the black-outs are entirely different. They are region-by-region complete loss of power for all but the hospitals (but often take out hospitals and emergency services too).
Compounding this issue, the grid is not designed to be switched on and off frequently. While there is a set schedule for the rolling blackouts, transformers and other equipment will blow under the sudden loads, meaning your regional blackout may last a lot longer than planned. You may also get blackouts sooner or completely out of schedule for region, for which no explanation is given.