Probable Effect Concentration Quotients (PECQS) Practice Test

What type of switch action is required for disconnecting circuits from the station generator?

1. Single Action

2. Double Throw

3. Ground Action

4. Triple Action

The correct answer is: Double Throw

The correct choice pertains to the function of a switch that needs to ensure safe and reliable disconnection of circuits from a station generator. A double throw switch allows the circuit to be connected to either the generator or an alternative source while having a neutral position. This action is crucial in ensuring that when a generator is taken offline, the load can be redirected to another source or completely isolated, thus preventing back feed and ensuring safety. In contrast, a single action switch typically connects or disconnects only between two states without provisions for multiple pathways. A ground action switch is specifically designed to create a connection to ground, which is not the primary function of disconnecting a generator. A triple action switch would provide more switching positions than typically required for merely disconnecting circuits from a generator, which complicates what is often a straightforward need for two operational states - connected or disconnected. Therefore, the double throw action is the most suitable and effective method for this operation.