Tools, Equipment & Testing Procedures Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Tools, Equipment & Testing Procedures flashcards as text
When bending a 90-degree stub-up in ½" EMT using a hand bender, the electrician must account for the bender's 'take-up' by:
Answer: Subtracting the take-up distance from the measured mark before bending
Take-up (gain) is subtracted from the desired stub length because the bend itself adds length to the vertical portion of the conduit.
A digital multimeter set to AC volts reads 0V across a switch, but the switch is in the OPEN position. What does this indicate?
Answer: Voltage is present on both sides of the switch, indicating correct operation
Zero volts across an open switch means both terminals are at the same potential (both hot or both neutral), which is the correct reading for a functioning switch in an energized circuit.
Which pulling lubricant is acceptable for use with THHN wire being pulled through PVC conduit?
Answer: Wax-based or listed wire-pulling compound
Listed wire-pulling compounds (wax or water-based) are compatible with THHN insulation and PVC conduit and do not degrade either material.
A voltage drop test on a long branch circuit run is performed by:
Answer: Measuring voltage at the source and again at the load terminals under load, then comparing
Voltage drop is measured by comparing source voltage to load-end voltage while the circuit is carrying its normal load current.
When using a come-along (hand ratchet puller) to tension a service entrance conductor, what safety accessory is required on the cable?
Answer: A wire mesh pulling grip (Kellems grip) sized to the cable
A Kellems (wire mesh) grip distributes tension evenly across the cable jacket without damaging insulation or conductor strands.
The multiplier used when bending an offset in conduit to determine the length of conduit needed between the two bends is based on:
Answer: The offset depth and the angle of the bends chosen
Offset multipliers (e.g., 2.0 for 30°, 1.4 for 45°) are applied to the offset depth to find the distance between bend marks.
Which of the following best describes the function of a toning device (tone generator and probe) in electrical work?
Answer: Traces and identifies a specific conductor among many without damaging insulation
A tone generator applies a signal to one conductor and the inductive probe is used to trace that conductor through bundles or conduit without cutting.