Practice Test Geeks(EETC) Electrical Technician Certification Practice Test
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Wiring Methods Flashcards

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

Read the first 7 Wiring Methods flashcards as text

  1. In a cable tray installation, what is the minimum width of a ladder-type cable tray for a 600V power cable with an outside diameter of 3.5 inches?

    Answer: 12 inches

    NEC 392.22 requires single-conductor cables in ladder trays to maintain spacing and the tray width must accommodate the cable diameter; 12-inch trays accommodate most standard power cables.

  2. What NEC article governs the installation of electrical metallic tubing (EMT)?

    Answer: Article 358

    NEC Article 358 specifically covers the installation and use of electrical metallic tubing (EMT).

  3. A 'wet location' as defined by the NEC includes all of the following EXCEPT:

    Answer: Indoor locations with controlled humidity below 50%

    The NEC defines wet locations as those subject to weather, saturation, or underground exposure; controlled indoor humidity does not qualify as a wet location.

  4. When installing conduit through a fire-rated wall, what is required?

    Answer: A firestop system listed for the opening

    NEC 300.21 requires that penetrations of fire-rated walls be firestopped using approved materials or methods to maintain the fire rating.

  5. What is the maximum allowable fill percentage for a conduit containing three current-carrying conductors?

    Answer: 31%

    NEC Table 1, Chapter 9 limits conduit fill to 40% for two conductors and 40% maximum, but with three or more conductors the fill is 40%; however, for conductors over 2, fill is limited to 40% per NEC—specifically 40% for 2 conductors and 40% for 3+, the standard answer for 3+ conductors is 40%.

  6. Liquidtight flexible nonmetallic conduit (LFNC) is identified by which NEC article?

    Answer: Article 356

    NEC Article 356 covers liquidtight flexible nonmetallic conduit (LFNC) installation and use requirements.

  7. Which wiring method requires a bushing where conductors enter a box or enclosure to protect conductors from the sharp edges of conduit?

    Answer: All rigid conduit types

    NEC 300.4(G) and 344.46 require insulating bushings where rigid conduit enters enclosures to protect conductors from abrasion.