What average percentage decrease in non-motor load magnitude has been indicated for a voltage reduction of 5%?

When considering the effects of voltage reduction on non-motor loads, a 5% reduction in voltage typically leads to a corresponding decrease in the load magnitude. Non-motor loads, such as lighting and resistive heating, are generally more sensitive to voltage changes than motor loads.

In many cases, the power consumed by non-motor loads is proportional to the square of the voltage. This means that a 5% reduction in voltage can lead to a larger percentage decrease in power consumption. The relationship can be approximated by the voltage reduction effect, which indicates that non-motor loads may indeed see an average percentage decrease of around 10% due to the voltage reduction.

This understanding aligns with typical electrical principles where non-linear loads can exhibit significant reductions in power consumption as voltage levels decrease, especially in the range of 5% to 10% voltage reduction. Therefore, indicating a 10% decrease in non-motor load magnitude is a reasonable expectation given a 5% voltage reduction.