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Tripp Lite APS inverter/chargers get their AC input power from two different types of sources: from the local utility service or from a variety of alternative sources. When an inverter/charger is connected to a utility source, it is often called “on-grid” or “grid-tie”, because it is getting its power from the utility network or “grid”. In mobile applications, when a vehicle is back in the garage or a boat is back in port, the connection to the utility service is called a “shore-power” connection. Since utility service can be unreliable - supplying power for only a few hours a day, or cutting off power without warning - many users rely on a variety of “off-grid” sources to ensure the maximum amount of availability for their electrical equipment. While “off-grid” sources can include a wide variety of alternative energy systems (such as solar PV panels, wind turbines, or hydro/water turbines), for the purposes of this training, Tripp Lite will focus solely on gas (or bio fuel) electrical generators. Tripp Lite encourages users to incorporate as many alternative energy systems as they find necessary to ensure availability. Gas generators - which run on petrol or bio fuels like ethanol or methanol - are the most common “off-grid” source. Like utility sources, gas generators pose similar threats to reliability and availability. Fuel can run out or become too expensive; generator parts can fail. In the end, the only way to reduce risk to availability in the face of so many unreliable power sources is to install a Tripp Lite APS inverter/charger as a backup power source.
