NATIONAL ELECTRICAL JATC
APPRENTICE LINEMAN TEST GUIDE
medium cable - Correct Answers -cable rated at up to 35,000 volts.
133 % insulation level - Correct Answers -must have adequate assurance that the
faulted section will be cleared within 1 hour.
employee - Correct Answers -has legal rights and is entitled to protection for safety on
the job.
fall arrest system - Correct Answers -must be worn when preparing to install a
termination from an aerial bucket.
insulating tape - Correct Answers -is a highly conformable, self-fusing ethylene
propylene rubber (EPR) tape that may have a 'snakeskin' liner that is easily removed as
the tape is applied.
annular conductor - Correct Answers -is generally used for sizes above 1,000 MCM to
help combat the 'skin effect' problem.
poor workmanship - Correct Answers -is a common cause due to strands of material left
in joint.
tape splice - Correct Answers -requires that the cable insulation ends are penciled in
addition to the normal cable cutbacks.
insulation shield - Correct Answers -must be carefully removed to leave a smooth,
square leading edge to minimize electrical stresses.
low-voltage secondary cables - Correct Answers -generally consist of conductor
strands, insulations, and sometimes an outer jacket.
poorly grounded cables - Correct Answers -are vulnerable to outages and to being
damaged by surges.
Rural Utility Service (RUS) - Correct Answers -introduced regulations stating that a
jacketed cable must be grounded a minimum of 4 ground(s) per mile to reduce shield
voltages to 25 volts or less.
