CCT CCT Electrical Systems & Wiring 2

Question 1

What does continuity testing of a Casper system's wiring harness verify?

Accepted Answer

That an unbroken electrical path exists between two points in the circuit

Answer

Continuity testing with an ohmmeter confirms that a complete, unbroken electrical path exists between two points, verifying that conductors are properly connected.

Question 2

A CCT technician measures 0.8 ohms resistance on a wire that should read less than 0.5 ohms. What is the most likely cause?

Accepted Answer

A loose or corroded connection increasing resistance in the circuit

Answer

Resistance above specification typically indicates a loose terminal, corroded connection, or damaged conductor that increases resistance beyond acceptable limits.

Question 3

What is the function of a terminal block in a Casper system's electrical enclosure?

Accepted Answer

To provide a safe, organized connection point for multiple conductors without direct splicing

Answer

Terminal blocks provide organized, secure connection points for conductors entering or leaving an enclosure, improving safety, traceability, and ease of maintenance.

Question 4

When sizing a wire for a Casper system circuit, which two factors primarily determine the required conductor gauge?

Accepted Answer

The current (ampacity) the wire must carry and the allowable voltage drop over its length

Answer

Wire sizing is governed by the ampacity required to carry the load current safely and the allowable voltage drop across the circuit's total length.

Question 5

Which instrument would a CCT technician use to measure insulation resistance of a Casper system's wiring to detect degraded insulation?

Accepted Answer

Megohmmeter (Megger)

Answer

A megohmmeter applies a high DC test voltage and measures the very high resistance of insulation, detecting degradation that could lead to ground faults or shock hazards.

(CCT) Certified Casper Technician Practice Test

(CCT) Certified Casper Technician Practice Test

CCT CCT Electrical Systems & Wiring 2