Electrical wire sizes will be found in which of the follwoing?

• A. An exploded view
• B. A wiring diagram
• C. A pictorial electrical diagram
• D. A block diagram

Answer: (B)

Wires come with a specific conductor size that determines their ampacity and how they’re protected, so the document that lists this kind of electrical detail is the wiring diagram. This diagram shows each circuit’s actual wiring paths, including conductor gauge, color codes, connector pins, and circuit numbers, which is essential for selecting the correct wire size and ensuring proper protection and performance. An exploded view focuses on mechanical assembly relationships, not electrical sizing. A pictorial electrical diagram provides a visual of components and connections but typically doesn’t specify wire gauges. A block diagram shows function and signal flow without physical wiring details. So, for finding electrical wire sizes, the wiring diagram is the right reference.