Planning & EstimatingQuestion 385 of 521
What is the primary purpose of a single-line (one-line) diagram?
a.To show every individual conductor in the building
b.To represent the overall power distribution system using single lines
c.To detail the internal wiring of each device
d.To show the furniture layout of the floor
Explanation
A one-line diagram uses single lines and standardized symbols to show the overall flow of power from the service through switchgear, panels, and major equipment. It intentionally omits individual conductor and device wiring detail.
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