An organization which provides access to the Internet typically for a fee. All major metropolitan areas in the world have numerous individual ISPs which will provide Internet service. Joule - A unit of energy. The surge suppression ability of a UPS is often quoted in joules. A process by which UPSs filter utility power to ensure that the proper voltage is sent to devices.
Battery power is used only when the incoming voltage dips below or rises above acceptable levels.
Load Shedding - A procedure by which the UPS switches off selected devices to save power or prolong battery runtime.