Common Meaning In Electrical. PF or pf Power factor. Two points are said to be common if they have the same potential Voltage in this sense Neutral and earthing conductors are common.
Dec 10 2010 Now to answer your question it means that the negative wire is the common wire in an electrical circuit. Is used to mean what I defined above as common. Two points are said to be common if they have the same potential Voltage in this sense Neutral and earthing conductors are common.
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Mar 17 2016 Electrical Terms For Circuits AC Alternating Current AC stands for Alternating Current. For example on a relay you would connect a common. Ph or ph Phases of an electrical circuit. Implies an arbitrary voltage reference with no connotation about its voltage relative to earth.
