Plan reading involves what main activity?

• A. Reading only the circuit numbers.
• B. Interpreting electrical drawings and specifications to install as designed and code-compliant.
• C. Installing equipment according to outdated drawings.
• D. Planning work on site without drawings.

Answer: (B)

Plan reading means taking the electrical drawings, diagrams, and written specifications and understanding them well enough to install the system as designed and in code compliance. This involves interpreting how circuits are routed, what equipment is specified, where connections go, and the notes that govern materials, methods, and safety requirements, so your work reflects the designer’s intent and meets the NEC and other codes. Reading only circuit numbers misses the actual wiring, connections, and design details; using outdated drawings can lead to noncompliance and unsafe installations; planning on site without drawings lacks the essential guidance these documents provide.