What is the definition of nominal voltage?
Answer:
Nominal generally derives from name. A nominal quantity (e.g., length, diameter, volume, voltage, value) is generally the quantity according to which some item has been named or is generally referred to. Such a nominal value may have no real relation to the item being referred to. For example, a type of battery that has an actual voltage of 1.62 V – but is commonly called a "1.5 volt battery" – has a nominal voltage of 1.5 V (which cannot be measured anywhere).
Nominal voltage is the typical voltage excluding variations. For example, a nominal voltage of 120 V includes the "bandwidth" allowed for flucuations. This might be 113 volts on the low end and 127 volts on the high end. Nominally 120 V.
nominal voltages are used for computations, in north america if you say 115 volts, usually the voltage varies from 110 to 120, for a 230 volts, it varies from 220 to 240, for a 460 volts, it varies from 440 to 480, for 575 volts, it varies from 550 to 600 volts. we also use nominal voltages in the specifications of equipments(like the boilers we manufacture)
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