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Version 6.10
General Information
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Branch Circuit Load Calcs
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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
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Utility Transformer Values
Wireway Fill
Circuit Breakers
Device and Metal Boxes
Arc Blast Pressure
Arc Flash Labels
Custom Reports
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Surge Protection Analysis
Formulae & Methods
Voltage Drop Formulae
Conductor Sizes
Ohm's Law Formulae
SI Units
Ohm's Law Module
  The Ohm's Law module utilizes all the components of AC and DC electrical power and can be setup for any degree of calculation complexity. From BTU's/hour to mill-ohms, mega-amps to pherdestärke(ps)(cv), anything and everything you might require.


The simple interface comprises AC-DC Power Types, 1, 2 or 3 Phase power, Power Factor, Real (true) Power, Apparent Power, Volts, Current, Resistance and Impedance unit list boxes, value entry boxes for each of the 5 unit categories, the Equal (calculate) button, a Clear Calculator button and a Status Bar that displays information on using every control in the program. Copy and paste the accurate results into any Windows program for additional analysis or just use it as it is. It's there for you to calculate Ohm's Law relationships in your terms.

Simple Ohm's Law calculations can be accomplished by setting the Power Type to DC and the Resistance/Impedance unit list box to Resistance.

View the formulae utilized in this module.


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).

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