Practice Test Geeks(CEP) Certified Electrical Professional Practice Test
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Installation & Maintenance Practices Flashcards

7 cards from real CEP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Installation & Maintenance Practices flashcards as text

  1. When installing conduit through a fire-rated wall, what is required to maintain the fire rating?

    Answer: Use a listed firestop system to seal the penetration

    NEC 300.21 requires listed firestop systems to be used at conduit penetrations through fire-rated assemblies to prevent fire and smoke spread.

  2. What is the minimum bending radius for a 2-inch rigid metal conduit (RMC) based on NEC Table 344.24?

    Answer: 10 inches

    NEC Table 344.24 specifies a minimum bending radius of 10 inches (to the inner edge) for 2-inch RMC.

  3. During routine maintenance, a technician finds a neutral conductor that is discolored and brittle at a connection point. What is the MOST likely cause?

    Answer: Loose connection causing resistive heating

    A loose neutral connection creates high resistance at the joint, causing localized resistive heating that chars and embrittles insulation over time.

  4. What does NEC 210.52 require regarding receptacle spacing in residential habitable rooms?

    Answer: A receptacle must be within 6 feet of any point along the floor line

    NEC 210.52(A) requires that no point along the floor line is more than 6 feet from a receptacle outlet, measured horizontally.

  5. When pulling wire through conduit, what is the maximum percent fill allowed for a conduit containing 3 or more conductors?

    Answer: 31%

    NEC Chapter 9, Table 1 limits conduit fill to 40% for two conductors and 31% for three or more conductors.

  6. A motor's nameplate shows a service factor (SF) of 1.15. What does this mean for maintenance planning?

    Answer: The motor can handle occasional overloads up to 115% of rated HP

    A service factor of 1.15 means the motor can handle occasional overloads up to 115% of its rated horsepower without overheating damage.

  7. When installing PVC conduit in a location subject to physical damage, what additional protection is required by the NEC?

    Answer: Schedule 80 PVC or equivalent protection must be used

    NEC 352.10 requires Schedule 80 PVC (thicker walls) or equivalent protection where conduit is subject to physical damage.