Practice Test Geeks(CCT) Certified Casper Technician Practice Test
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CCT Electrical Systems & Wiring Flashcards

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

Read the first 6 CCT Electrical Systems & Wiring flashcards as text

  1. What is the purpose of a ground fault circuit interrupter (GFCI) when wiring a Casper system in a US installation?

    Answer: To protect personnel from electric shock by detecting leakage current to ground

    A GFCI detects imbalances between hot and neutral current that indicate leakage to ground and trips within milliseconds to protect personnel from electric shock.

  2. According to NFPA 70 (National Electrical Code), what color is the grounding conductor in a standard US branch circuit?

    Answer: Green or bare copper

    The NEC requires the equipment grounding conductor to be green, green with yellow stripe, or bare copper to distinguish it from current-carrying conductors.

  3. A Casper system's nameplate states 120 V / 10 A. What is the minimum circuit breaker rating required under NEC continuous-load rules if the equipment runs continuously?

    Answer: 12.5 A (125% of 10 A)

    NEC Section 210.20 requires overcurrent protection rated at least 125% of a continuous load, so 10 A × 1.25 = 12.5 A minimum, typically met with a 15 A breaker.

  4. What does the term 'voltage drop' refer to in a Casper system's supply wiring?

    Answer: The reduction in voltage along a conductor due to its resistance and the current flowing through it

    Voltage drop is the decrease in electrical potential along a wire caused by the wire's resistance and the current it carries, and excessive drop can impair equipment performance.

  5. Which wiring method is commonly used to protect Casper system conductors in industrial or commercial environments requiring mechanical protection?

    Answer: Electrical metallic tubing (EMT) conduit

    EMT conduit provides mechanical protection for conductors in commercial and industrial settings and is one of the most widely used raceway systems under the NEC.

  6. Before performing any wiring work on a live Casper electrical panel, what lockout/tagout (LOTO) step must be completed first?

    Answer: De-energize the circuit and apply a personal lock to the isolating device before touching any conductors

    LOTO requires de-energizing the circuit and applying a personal lock to the energy isolation point before any contact with electrical conductors, per OSHA 1910.147.