The Eaton 9E 20000i is a 20,000VA (20kVA) online double-conversion UPS in a tower form factor, running at 220-240V - sized for a significant server room, data closet, or a rack of networking and telecoms equipment rather than a single machine. Like other online UPS designs, it continuously regenerates output power from its own inverter, giving connected equipment true zero-transfer-time protection against sags, surges, and outages, rather than switching over after a brief gap. At this capacity it's a business-critical infrastructure purchase - the kind of unit an IT department or facilities team installs to keep core servers and network gear running through mains failures and, in South Africa specifically, scheduled load-shedding.