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Version 6.10
General Information
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Volts Features
Help Movies - How To Do's
All Volts Features
Branch Circuit Load Calcs
Circuit Layout
Cable Tray Fill
Circuit Load Analysis
Conduit Fill
Device and Metal Box Fill
Efficiency Factor
Motor Ampacity and Characteristics
Motor Startup Ampacity
Ohm’s Law
Power Factor
Power Factor Correction
Resistor Color Codes
Series Location Voltage Drop
Transformer Sizing
Unit Conversions
Utility Transformer Values
Wireway Fill
 
Databases
Cables
Circuit Breakers
Conductors
Device and Metal Boxes
Fuses
Items
 
Reports
Arc Blast Pressure
Arc Flash Labels
Custom Reports
One Line Diagrams
Panel Schedules
Report PDF Samples
Short Circuit Analysis
Surge Protection Analysis
 
Formulae & Methods
Voltage Drop Formulae
Conductor Sizes
Ohm's Law Formulae
SI Units
Efficiency Factor
     
  Efficiency factor is the ability of a device to utilize a given electrical current and voltage to produce a specified amount of power.

   
 

   
 

Volts' Efficiency Factor module calculates device efficiency in one of ten different ways by either device nameplate information or measured apparent power information with a section of accepted estimated efficiency factors.

The Power Out and Power In sections each have three similar selection categories, Real Power, Apparent Power and Volts and Current. Simply select the appropriate category for your known values and Volts accurately calculates your device's efficiency factor.

     

It simply cannot be any easier or more accurate to obtain the correct information the first time.

 

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Reprinted with permission from NFPA 70 2008, NEC® copyright© 2008, National Fire Protection Association. This is not the complete and official position of the NFPA on the referenced subject which is represented only by the standard in its entirety. The title National Electric Code® and the acronym NEC® are registered trademarks of the National Fire Protection Association (NFPA).

Volts is a registered trademark of Dolphins Software

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