Abbreviation for alternating current. When a Solar Power System (direct current) is used in a grid-connected home or used for traditional home appliances, then an Inverter is necessary to convert the electricity from direct current (DC) to alternating current (AC). The advantage of alternating current lies in the possibility of changing its voltage (i.e. to 110 V for domestic use or to higher voltages for long-distance transport).

See also: DC

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