CEA Tools, Equipment & Testing Procedures 4

Question 1

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:

Accepted Answer

Subtracting the take-up distance from the measured mark before bending

Answer

Take-up (gain) is subtracted from the desired stub length because the bend itself adds length to the vertical portion of the conduit.

Question 2

A digital multimeter set to AC volts reads 0V across a switch, but the switch is in the OPEN position. What does this indicate?

Accepted Answer

Voltage is present on both sides of the switch, indicating correct operation

Answer

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.

Question 3

Which pulling lubricant is acceptable for use with THHN wire being pulled through PVC conduit?

Accepted Answer

Wax-based or listed wire-pulling compound

Answer

Listed wire-pulling compounds (wax or water-based) are compatible with THHN insulation and PVC conduit and do not degrade either material.

Question 4

A voltage drop test on a long branch circuit run is performed by:

Accepted Answer

Measuring voltage at the source and again at the load terminals under load, then comparing

Answer

Voltage drop is measured by comparing source voltage to load-end voltage while the circuit is carrying its normal load current.

Question 5

When using a come-along (hand ratchet puller) to tension a service entrance conductor, what safety accessory is required on the cable?

Accepted Answer

A wire mesh pulling grip (Kellems grip) sized to the cable

Answer

A Kellems (wire mesh) grip distributes tension evenly across the cable jacket without damaging insulation or conductor strands.

(CEA) Certified Electrical Apprentice Practice Test

(CEA) Certified Electrical Apprentice Practice Test

CEA Tools, Equipment & Testing Procedures 4