Plan Review and Inspections Flashcards
7 cards from real E2 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Plan Review and Inspections flashcards as text
During a plan review for a commercial building, the inspector notices that the electrical drawings lack a fault current calculation. What should the inspector require before approving the plans?
Answer: Require the engineer to provide available fault current calculations and equipment interrupting ratings
NEC 110.9 and 110.10 require that equipment have adequate interrupting ratings and be protected against fault currents, which must be verified during plan review.
A commercial plan set shows a 480V, 3-phase panel with a 400A main breaker but the service conductors are sized for only 350A. What is the correct inspector action?
Answer: Reject the plans and require conductors sized to at least 400A or a smaller main breaker
NEC 230.90 requires the service overcurrent device to not exceed the ampacity of the service conductors it protects.
When reviewing plans for a commercial occupancy, which document is most important for verifying that proposed wiring methods are suitable for the environment?
Answer: The specification section listing approved wiring methods and environmental conditions
Specification sections detail approved wiring methods, environmental conditions, and material standards that the inspector uses to verify NEC compliance.
A plan review reveals that a mechanical room will house a 480V motor control center (MCC). The plans do not show working space clearances. What should the inspector do?
Answer: Reject the plans and require dimensioned working space drawings per NEC 110.26
NEC 110.26 requires specific working space clearances that must be shown on plans so the inspector can verify compliance before construction begins.
During an inspection of a commercial building under construction, an inspector finds conduit installed in a concrete slab that is not listed for concrete encasement. What is the correct action?
Answer: Issue a correction notice and require removal and replacement with listed concrete-encased conduit
NEC 358.10 and related articles require that wiring methods be listed and suitable for the conditions of use, including concrete encasement.
A commercial electrical plan shows twelve 20A, 120V circuits in an office area. The inspector calculates the load exceeds the panel's available capacity. What action should be taken?
Answer: Reject the plans and require an amended load calculation and panel schedule showing adequate capacity
NEC 220 requires load calculations to confirm panel capacity before approval; the engineer must revise plans to show compliant capacity.
When inspecting a commercial service entrance, the inspector observes that the service conductors pass through a basement ceiling space without conduit protection for approximately 8 feet. Which NEC requirement addresses this?
Answer: NEC 230.50, which requires service entrance conductors to be protected where subject to physical damage
NEC 230.50 requires service entrance conductors to be protected against physical damage, typically requiring conduit in accessible areas such as basement spaces.