Continuous Load Capacity Calculator

How Continuous Load Capacity works

The displayed equation is rating = load ÷ loading fraction. Continuous Load Capacity uses Continuous load, Maximum loading to report Minimum circuit rating.

With the loaded values, minimum circuit rating evaluates to 25.00 A. Test one input at a time and save the original case.

Inputs for Continuous Load Capacity

Continuous load and Maximum loading belong to Continuous Load Capacity. Keep source units with continuous load.

The initial entries illustrate operation only. Use current records, readings, or nameplate values for planning.

Continuous load

Example entry: 20 A.

Maximum loading

Example entry: 80%.

Reading the Continuous Load Capacity result

This output represents Continuous Load Capacity.

A numerical answer cannot replace the rating and protection checks for the real equipment.

Measurement and units

Treat these results as planning arithmetic; conductor and protective-device selection must follow the applicable electrical code and equipment instructions. Check prefixes on continuous load.

Normalize units before judging one electrical case against another.

Limits of this calculation

Use the continuous-load rule required by the governing code.

This worksheet does not model every behavior in the surrounding system. Unentered effects remain outside Continuous Load Capacity.

A useful Continuous Load Capacity comparison

Record minimum circuit rating before testing a different continuous load value.

Document the alternate continuous load source.

Continuous Load Capacity record notes

Record source and operating details for continuous load. Compare this result with Electrical Fuse Rating Calculator when minimum fuse current is also needed.

Retain raw minimum circuit rating beside its selected rating.

Questions about Continuous Load Capacity