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

That insulation resistance is above 1 MΩ

Answer

That the voltage at each terminal is correct

Answer

That the wiring is correctly color-coded

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

The wire is too short

Answer

The meter leads are damaged

Answer

The wire gauge is too large

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

To generate DC power for the system

Answer

To filter high-frequency noise from power lines

Answer

To store excess cable length

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 color and conduit brand

Answer

The ambient temperature only

Answer

The conduit fill percentage and wire color

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

Clamp meter

Answer

Oscilloscope

Answer

Power quality analyzer

Question 6

What is the purpose of using strain relief fittings where cables enter a Casper system's electrical enclosure?

Accepted Answer

To prevent mechanical stress on conductors and terminal connections caused by cable movement or pulling

Answer

To increase wire ampacity

Answer

To provide a weatherproof seal only

Answer

To color-code the incoming cables