Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Are four-way switches considered to be a disconnecting means?

1. True

2. False

The correct answer is: False

Four-way switches are used to control lighting from multiple locations, typically in conjunction with two three-way switches. While they play an essential role in lighting control, they are not considered a disconnecting means. A disconnecting means is defined as a device that provides a visible and safe way to disconnect a circuit from its power source for maintenance or emergency purposes. Four-way switches do not provide this capability, as they do not isolate power to the circuit they control. Instead, they function to route electricity and do not break the circuit, thereby failing to meet the criteria necessary to be classified as a disconnecting means. This distinction is crucial for safety reasons, as proper disconnecting means must be readily accessible and visibly indicate when the circuit is de-energized. Hence, the correct answer reflects this understanding of the function of four-way switches in electrical systems.