ICC Residential Electrical Inspectors Practice Exam 2025 – Complete Prep Guide

In the context of electrical systems, the regulation regarding motor loads controlling snap switch loads is primarily based on safety and ensuring that the switch can handle the inrush current typically seen when a motor starts. The correct answer, 80%, indicates that a motor load can control a snap switch load as long as the total amperage does not exceed 80% of the switch's rated capacity. This percentage allows for some margin to accommodate the higher current that a motor may draw at startup, which can be significantly higher than its running current.

This 80% rule is a well-established safety practice. It helps to prevent overheating and potential damage to the switch, ensuring reliable operation over time. By not exceeding this percentage, one is also considering factors such as continuous load and any additional strains put on the switch by the motor's operational demands.

Understanding this limit is crucial for electrical inspectors as it ensures compliance with safety codes and protects both the equipment and the occupants. It's clear why this particular answer is the most appropriate choice, given the context of motor control applications and the operation of snap switches.