CCI Electrical Systems Inspection Flashcards
6 cards from real CCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCI Electrical Systems Inspection flashcards as text
During an electrical inspection, what is the purpose of a load calculation?
Answer: To determine if the service entrance capacity is adequate for the building's electrical demand
Load calculations ensure the electrical service entrance has sufficient ampacity to safely supply all anticipated electrical loads in the building.
What NEC article governs the installation of electrical wiring in hazardous locations?
Answer: Article 500
NEC Article 500 covers hazardous classified locations where flammable gases, vapors, or combustible dusts may be present.
A CCI inspector notices a junction box is installed without a cover plate. What is the correct action?
Answer: Require correction — all junction boxes must have accessible, secured cover plates
The NEC requires all junction boxes to be covered with accessible cover plates at all times, regardless of location or stage of construction.
What is the maximum conduit fill percentage allowed for three or more conductors per NEC Chapter 9?
Answer: 40%
NEC Chapter 9 limits conduit fill to 40% of the conduit's cross-sectional area when three or more conductors are installed.
When inspecting service entrance conductors, how must they be protected where they pass through the exterior wall?
Answer: Installed in a weatherproof conduit or raceway approved for outdoor use
Service entrance conductors must be installed in weather-rated conduit or raceway through wall penetrations to prevent moisture intrusion and mechanical damage.
What is the required depth of burial for direct-buried electrical cable (UF cable) under a residential driveway per NEC?
Answer: 24 inches
NEC Table 300.5 requires direct-buried cables under driveways subject to vehicular traffic to be buried a minimum of 24 inches deep.