Probable Effect Concentration Quotients (PECQS) Practice Test

Where should no automatic cutout or switch be placed in a wiring system?

1. In the main power supply

2. In the equipment conductor

3. In auxiliary installations

4. In temporary setups

The correct answer is: In the equipment conductor

In a wiring system, the placement of automatic cutouts or switches is critical for ensuring safety and functionality. The equipment conductor is the pathway through which electrical power is delivered to the equipment itself. If an automatic cutout or switch is installed in this conductor, it could create unsafe operating conditions. For instance, any disconnection or interruption in the equipment conductor can lead to unpredictable behavior, potentially damaging the equipment and posing risks to users. Moreover, placing an automatic cutout in the equipment conductor can obstruct the necessary continuous power flow needed for the equipment to operate correctly. This is particularly important for devices that require a steady power supply or that can't afford interruptions during operation. Therefore, the proper place for such protective devices is not in the equipment conductor but in locations like the main power supply or other safe installations where they can effectively manage power flow without compromising the equipment's performance.