Technical Standards and Safety Authority (TSSA) G3 Practice Exam

What do equipment wiring diagrams indicate?

1. Supply voltage, wire size from panel, fuse size, internal wiring

2. Supply voltage, internal wiring, location of controls, field wiring

3. Supply voltage, fuse size, type of disconnect switch, factory wiring

4. Supply voltage, size of control wiring, location of gas valve, factory wiring

The correct answer is: Supply voltage, internal wiring, location of controls, field wiring

Equipment wiring diagrams are essential tools that provide a comprehensive view of how electrical systems are interconnected and how various components relate to one another. The choice stating that wiring diagrams indicate supply voltage, internal wiring, location of controls, and field wiring encompasses the fundamental aspects essential for understanding how the equipment operates and how it should be installed or serviced. Specifically, knowing the supply voltage allows technicians to ensure that the equipment will operate safely and effectively within its operational parameters. Internal wiring offers insights into how the components are interconnected, which is crucial for troubleshooting and repairs. The location of controls is vital for understanding where the user interface is and how to interact with the machinery safely. Field wiring refers to the connections that occur outside the factory — this is vital for installation purposes to ensure that external connections are correctly made to the equipment. While other options provide various combinations of components and specifications, they do not capture the full spectrum of information that a technician or engineer would need when working with equipment wiring diagrams. Therefore, the identification of supply voltage, internal wiring, location of controls, and field wiring reflects an accurate and complete representation of the information conveyed by these diagrams.