OHELE reference layer
Electrical Formulas and Engineering Relationships
These references connect common electrical formulas to physical behaviour. Each guide explains the quantity being calculated, the assumptions behind the relationship and the practical check that follows.
Ohm’s Law Explained: Formula, Triangle and Worked Examples
Ohm’s law relates voltage, current, and resistance in a circuit element: V = I R In this form, V is the voltage across the…
kW vs kWh: How to Calculate Electricity Use
A kilowatt (kW) measures power: the rate at which equipment uses or supplies energy. A kilowatt-hour (kWh) measures an amount of energy. To calculate…
Load Factor Formula: Calculate It From kWh, Peak kW and Hours
Load factor compares average electricity demand with the highest demand in the same period. The U.S. Energy Information Administration defines it as the ratio…
Induction Motor Slip Calculation: Formula, RPM Table and Worked Example
Induction motor slip is the rotor’s shortfall behind the rotating magnetic field. First calculate the field’s synchronous speed in revolutions per minute (rpm): Ns…
Capacitor Microfarads to kVAR: A Connection-Aware Conversion Guide
Capacitance cannot be converted to kilovolt-amperes reactive (kVAR) on its own. You also need the RMS voltage actually across each capacitor, the supply frequency,…