Chapter 7,8,10,11 Lineman Cableman book 76 Exam Essentials: Your Complete Question Guide| Correctly Answered
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Module
Lineman Cableman book
Institution
Lineman Cableman Book
A customer feed by a secondary underground cable complains about erratic power a voltage reading at the customer may show in normal voltage what else should be checked - ️️Use a 500 V insulator tester to test the service
Before cutting a cable in a trench how Kenny lineman be sure the correct ...
Chapter 7,8,10,11 Lineman Cableman
book 76 Exam Essentials: Your
Complete Question Guide
A customer feed by a secondary underground cable complains about erratic power a voltage reading at
the customer may show in normal voltage what else should be checked - ✔ ✔ Use a 500 V insulator
tester to test the service
Before cutting a cable in a trench how Kenny lineman be sure the correct cable has been isolated - ✔
✔ By using a spike in tool
Before digging what other utilities should be located - ✔ ✔ Electric, gas, communications, water,
sewer, irrigation, proposed excavation
Can a load interrupt your switch interrupt a fault current - ✔ ✔ No it can only interrupt load current
Can the insulation on unshielded cable such as a covered conductor be depended on for personal safety
- ✔ ✔ No it cannot
Describe two types of transmission tower foundations - ✔ ✔ A grillage, augured, pad and pier, screw
in
During a string operation how is a person on a tensioner protected from electric shock if the conductor
being strong makes electrical contact - ✔ ✔ A ground gradient Matt is placed so that the machine
operator and people involved in changing rules are working from the mat bonded to the tensioner
Give an example of static electricity - ✔ ✔ Walking on carpet and touching a door knob
How can broken strands cause problems when using an old conductor to pull in a new conductor - ✔
✔ It could come out fall out and cross circuits stream can Bunch up and could touch other phases or
the neutral
How can facing sticks be adapted to carry out a hipot test on a distribution cable - ✔ ✔ ADC hipot
adapter to a phasing tool can test a cable with an AC voltage when using an existing energized AC source
and converting it to DC
How can the minimum approach distance be maintained when working with rubber gloves - ✔ ✔
Because lime in our insulated from other grounds and phases
How do Lyman protect themselves from the ground gradient when working at a pad mount transformer
- ✔ ✔ Ground gradient Matt that is bonded to the transformer
, How does sag in a transmission line span affect the end Ampacity of a conductor - ✔ ✔ It increases it
sag has to be where you can still have clearance
If a person working on a transmission line leaves any rougher sharp points on a conductor or other
energize hardware what affects will that cause - ✔ ✔ Will eventually causing a rupture in
insulationAnd possibly corona loss
Make a sectional Lizer be used by a line crew to interrupt load - ✔ ✔ Yes
Name four ways to verify line is isolated went applying a lock out tag out procedure - ✔ ✔ Visual
opens, maps, dispatch, grounds
Name one advantage of using a performed tie over a hand formed tie when tying a conductor on the top
of a top tieinsulator - ✔ ✔ It will be easier and more efficient then a hand form Ty less dependent on
lineman making perfect ties
Name the two forms of induction that make up electromagnetic induction - ✔ ✔ Magnetic field
conductive and electric field conductive
Name three methods used to extinguish in ark in various switchgear - ✔ ✔ A spring loaded fuse link
separates the two parts quickly when the fuse melts. When contacts are immersed in an insulating
medium such as oil. He special coating inside the fuse holder reacts with the ark and produces a gas at
high pressure.
Name three precautions needed to install a power installed screw anchor - ✔ ✔ Correct pressure of
boom and correct pressure of screw
Name three ways that a lineman can positively identify which conductor on a pole is the neutral - ✔ ✔
Trace conductor to nearest transformer. Trace conductor to pull ground. Test or install ground.
Name three ways that the voltage on a neutral is in creased - ✔ ✔ When a phase of struck by
lightning, during a line to ground fault, a poor electrical connection in the neutral circuit.
Name two factors that influence the specification for the size of conductor needed - ✔ ✔ A
conductor must be large enough to keep the voltage drop to an acceptable limit a conductor must be
large enough to limit line loss and keep the fall current available at the end of the line high enough for
the protective switchgear to see your fault a conductor must be large enough to except future load
growth in a conductor on transmission lines must be large enough to limit corona loss
The control box can become energized if the clothes are malfunctions or the bushings flap over the
control cable bonds together they were closer and control box - ✔ ✔
The magnetic field from the current carrying conductor induce is a current in the metal sheet or
concentric neutral wires when the sheath is grounded at both ends of the cables what can be done to
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