Tools, Equipment & Testing Procedures Flashcards

When using a clamp meter to measure AC current, what must the conductor pass through?

Answer: The center of the clamp jaw opening

The conductor must pass through the center of the clamp jaw so the magnetic field is fully captured for an accurate reading.

A fish tape made of steel should NOT be used when pulling wire through conduit that contains:

Answer: Live energized conductors

Steel fish tape is conductive and using it in conduit with energized conductors creates a serious electrocution hazard.

Which tool is used to cut threads on the outside of metal conduit in the field?

Answer: A pipe threader die and ratchet

A pipe threader with the correct die size cuts NPT external threads on rigid or IMC conduit for coupling connections.

What is the primary purpose of a conduit reamer after cutting conduit?

Answer: To remove sharp burrs from the inside edge

Reaming removes burrs left by cutting to prevent insulation damage on conductors pulled through the conduit.

A phase rotation meter (phase sequence tester) is used to verify:

Answer: The order in which three-phase voltages peak

Phase rotation meters confirm ABC or ACB phase sequence, which is critical for correct motor rotation direction.

When operating a hydraulic knockout punch, the ram is driven through the sheet metal by:

Answer: Pumping hydraulic fluid to increase force on the punch

Hydraulic knockouts use fluid pressure generated by pumping to drive the punch through metal enclosures cleanly.

Which meter function would you use to test a capacitor for an open or short circuit?

Answer: Capacitance (F or µF)

The capacitance function measures actual capacitance in farads or microfarads, revealing opens (reads near zero) or shorts.