Resistive Load Bank Calculator
Calculate element voltage, line current, and total power for single-phase or balanced three-phase resistive loads.
Enter circuit values
Load bank power
About this calculator
Calculate element voltage, line current, and total power for single-phase or balanced three-phase resistive loads. Use measured or manufacturer-specified values where available.
For a three-phase load, the calculation assumes three identical elements connected in a balanced wye or delta arrangement. Confirm the actual bank nameplate and connection before applying a load.
Method and assumptions
Element current is element voltage divided by element resistance, and total power is the sum of element voltage multiplied by element current. Wye elements use line voltage divided by √3; delta elements each use line voltage, with line current equal to √3 times element current.
The model assumes ideal resistors with constant resistance at steady state. It excludes component tolerance, temperature rise, wiring resistance, reactive components, transients, and protective-device selection.
FAQs
Can I use this for AC circuits?
No. This calculator models ideal, steady-state DC resistors. It does not model reactance, phase angle, harmonics, or AC load behavior.
Does the result check component ratings?
No. Compare calculated voltage, current, and power with component datasheets and application limits before selecting or operating equipment.
Sources
Ideal resistor relationships from Ohm’s law and the DC power equation.