Will all this switching on and off damage my appliances?

 Most domestic appliances like geysers, refrigerators and deep freezers have their own duty cycle, that is to say they switch themselves in and out to regulate temperature. The additional switching imposed by ZESA will not affect the equipment.
 Computers and some other electronic equipment are prone to loss of data if powered down during operation and should ideally be put on an Uninterruptable Power Supply (UPS).