Electric Motors

Motor Cable Power Loss Calculator

Use Motor Cable Power Loss to the cable loss calculation. The loaded example shows the arithmetic with practical electrical units.

Enter values for cable loss

Use one consistent electrical operating case for all fields.

The arithmetic follows three-phase loss = 3I²R. Motor Cable Power Loss uses Motor current, Cable resistance to report Cable loss.

With the loaded values, cable loss evaluates to 324.00 W. A second case makes the effect of one changed measurement visible.

Motor current and Cable resistance belong to Motor Cable Power Loss. Keep source units with motor current.

No recommendation is implied by the loaded example. Use measurements from the intended scenario.

This output represents Motor Cable Power Loss.

The worksheet isolates arithmetic; final ratings need a broader equipment check.

Motor nameplate data, duty, enclosure, starting method, load profile, and thermal limits govern final selection. Check prefixes on motor current.

Preserve the measurement basis when testing alternatives.

Resistance is per phase conductor. Use Motor Poles Frequency Calculator to a separate required pole count calculation.

Treat the formula as one part of the overall electrical analysis. Unentered effects remain outside Motor Cable Power Loss.

Record cable loss before testing a different motor current value. Line current can be checked in Three-Phase Motor Current Calculator.

Document the alternate motor current source.

Record source and operating details for motor current. For permitted service-factor load, use Motor Service Factor Calculator.

Retain raw cable loss beside its selected rating.

Motor Cable Power Loss reports cable loss.

For Motor Cable Power Loss, measure any zero motor current directly.

Resistance is per phase conductor. Recheck motor current.

Keep extra digits while comparing cases, then round to the precision supported by motor current.