Lineman Safety and Technical Skills 3

Question 1

What is the purpose of a load buster tool when used on cutout fuses?

Accepted Answer

To safely open or close a cutout under load without arcing damage to the operator

Answer

A load buster (or fuse puller with arc quenching) allows linemen to open or close cutouts energized under load while safely extinguishing the resulting arc.

Question 2

In a three-phase system, if one phase conductor is open (broken), what is this condition called?

Accepted Answer

Single phasing

Answer

Single phasing occurs when one of the three phases is lost, which can cause motors to overheat and fail due to unbalanced current in the remaining phases.

Question 3

When using a hydraulic digger derrick, the maximum allowable boom angle from horizontal during lifting operations is typically?

Accepted Answer

Specified by the manufacturer's load chart

Answer

Maximum boom angle and load capacity must always be determined from the specific manufacturer's load chart, as they vary by equipment model.

Question 4

A lineman is making a dead-end splice on an ACSR conductor. What is the correct sequence for installing a compression sleeve?

Accepted Answer

Compress the steel core first, then the aluminum sleeve from the conductor end toward the dead-end

Answer

For ACSR dead-end compression connectors, the steel core insert is compressed first, then the aluminum sleeve is compressed starting from the conductor end and working toward the dead-end fitting.

Question 5

What is the function of a recloser on a distribution line?

Accepted Answer

To automatically interrupt and reclose the circuit after a fault, restoring service if the fault is temporary

Answer

A recloser automatically opens on fault current and attempts to reclose the circuit one or more times, restoring service if a temporary fault (like a tree limb) has cleared.

(Lineman) Lineman Certification Practice Test

(Lineman) Lineman Certification Practice Test

Lineman Safety and Technical Skills 3