Reference boundary

Terminology reference only. The actual equipment nameplate and manufacturer instructions govern the equipment.

Reference table

Decode common electrical nameplate abbreviations and symbols used on equipment labels.

Reference basis uses common manufacturer nameplate terminology.
MarkingMeaningCommon contextUse
VVoltsRated voltageMatch supply and equipment rating
AAmperesRated currentRead directly from nameplate before estimating
HzHertzFrequencyConfirm 60 Hz equipment where required
kWKilowattsReal power or outputPower conversion and load estimates
kVAKilovolt-amperesApparent powerTransformers, generators, and UPS equipment
PFPower factorMotors, drives, generatorsConvert between kW, kVA, and current
Use notes
  • Use this table for preliminary reference and arithmetic checks only.
  • Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.