A 3-pole, general-use snap switch is generally permitted to control what?

• A. Single circuit
• B. Two circuits
• C. Multiple circuits where listed and marked as a 'three-circuit' switch
• D. Three independent loads

Answer: (C)

A three-pole switch can control more than one circuit, but it must be specifically listed and marked for that purpose. The term “three-pole” means there are three separate switching elements inside the device, so it has the ability to interrupt three circuits. However, you should only use it to switch multiple circuits if the manufacturer’s listing confirms it is a three-circuit switch. The listing ensures the device has been tested and approved for safely handling three separate circuits within the same housing, with appropriate insulation and ratings. If it’s not listed as three-circuit, it isn’t assumed to safely control more than one circuit. So, controlling multiple circuits is allowed only when the switch is explicitly listed and marked for three circuits. This is why the correct choice describes “multiple circuits where listed and marked as a three-circuit switch.”