Enter the voltage of the outlet, breaker amps, and power usage (watts) into the calculator. The calculator will evaluate and display the percent load.

Electricity Load Calculator

The following equation can be used to calculate the percentage load on a circuit breaker.

L = P / V*A *100
  • Where L is the % load
  • V is the voltage
  • A is the amps
  • P is the current power usage

To calculate an electricity load percentage, divide the power usage by the product of the voltage and current, then multiply by 100.

Electricity Load Definition

An electricity load is a measure of the total percentage of available load that an application is using up.

Electricity Load Example

How to calculate electric load

  1. First, determine the power

    Determine the total amount of power being drawn from the outlet.

  2. Next, determine the volts and amps of the outlet.

    This will be the standard voltage and amps the outlet produces.

  3. Calculate the % load

    Calculate the $ load used the information from steps 1 and 2 and the formula above.


What is electricity load?

The electricity load is the total percentage of the max output of a outlet that is currently being used. For example if the max output is 120 volts at 1 amp, and you’re using 60 watts, then the usage would be 50%.