Formula variables
- Current is the load current in amps.
- Resistance is the entered conductor resistance in ohms.
- Current-carrying conductors scales the loss estimate.
- Operating hours converts power loss into energy.
Assumptions
- Resistance is entered for the conductor path being evaluated.
- Current-carrying conductors are entered by the user for the loss estimate.
- The result does not model changing current, conductor temperature feedback, or enclosure heat transfer.
- This calculator does not replace voltage-drop or ampacity review, thermal analysis, or product temperature limits.
Examples
Feeder loss screen. 80 A through 0.05 ohm across three current-carrying conductors estimates 960 W and 7.68 kWh over 8 hours.
Review workflow. Use voltage drop, conductor resistance, and operating profile checks before treating losses as final.