Electrical Craft Helper Study Guide (Latest
2026/2027 Update) 100% Verified Actual
Exam Questions & Answers | Grade A
This comprehensive Electrical Craft Helper Study Guide is designed to help
candidates prepare for and pass entry-level utility and trade assessments. Packed
with over 100 practice questions and detailed answers, it builds the foundational
knowledge and technical confidence required to succeed in electrical support
roles.
Key Exam Topics Covered
• Electrical Fundamentals: Basic circuitry, terminology, voltage
tolerances, and relay types.
• Hand and Power Tools: Proper tool identification, usage, and safety
maintenance (e.g., conduit couplings, measuring tools).
• Mechanical Aptitude: Mechanical theory, gear movements, and pulley
systems.
• Safety Procedures: Job site safety protocols, equipment handling, and
OSHA guidelines.
• Basic Math & Spatial Reasoning: Arithmetic, geometry, and map/route
reading.
Why Choose This Guide?
• Realistic Practice: Mimics the format and difficulty of official civil service
and utility tests.
• Detailed Correct answers
• Instant Accessibility: Provided as a downloadable PDF format for on-
the-go studying across all your devices
1
,Q1. Which component protects a power line against lightning damage by
carrying the charge away from the power line? [Multiple Choice]
A) phase wires
B) transformers
C) circuit breakers
D) ground wires
Answer: ground wires
Explanation: Ground wires provide a path to carry charge away from a power line, protecting it
from lightning-related damage as stated in the guide. Transformers change voltages, circuit
breakers protect against overloads or faults, and phase wires are conductors carrying current;
none of those are described as the element that carries lightning charge away.
Q2. How many 120-foot lengths of wire can be cut from five 500-foot reels?
[Multiple Choice]
A) 18
B) 22
C) 16
D) 20
Answer: 20
Explanation: Five 500-foot reels total 2500 feet of wire. Dividing 2500 by 120 gives 20 full 120-
foot lengths. The other numbers are results of incorrect division or rounding and do not match
the total footage available.
Q3. When should drill bits and drill motors be removed and returned to storage?
[Multiple Choice]
A) at the end of each application
B) at the completion of the last application of that tool
C) at the end of the work day only
D) at the completion of the whole job
Answer: at the completion of the last application of that tool
Explanation: The guide advises returning drill bits and drill motors to their cases at the
completion of the last application of that tool, which means once you are done using that tool for
the tasks it was needed for. Returning them only at the end of the day or only after the whole job
2
, risks leaving tools exposed or misplaced; returning them after each application is overly frequent
compared to the stated guidance.
Q4. What is the best tool to verify the dimensions of a high-voltage equipment
room (e.g., 125 ft x 75 ft) as stated in the engineering design? [Multiple Choice]
A) 100-foot cloth measuring tape
B) pacing
C) wooden folding rule
D) metallic measuring tape
Answer: wooden folding rule
Explanation: The guide identifies the wooden folding rule as the best tool for verifying room
dimensions in that context—likely because it is long and rigid enough for building measurements
in that setting. A metallic tape or a 100-foot cloth tape are measuring tools but were not
specified as the preferred choice in the guide for this verification, and pacing is an imprecise
estimate rather than a measurement tool.
Q5. Of the following, how should you stand when lifting a heavy object from the
ground? [Multiple Choice]
A) close together, pointed in the same way, and with the knees stiff
B) close together, right foot forward, knees stiff, and the back upright
C) a little apart, pointed outward, with the knees and back both bent
D) a little apart, pointed the same way, with knees bent and back upright
Answer: a little apart, pointed the same way, with knees bent and back upright
Explanation: The guide specifies standing with feet a little apart, pointed the same way, knees
bent, and back upright—this stance gives stability and lets you lift with leg muscles while keeping
the back straight. Standing with feet close together or with knees stiff reduces stability; pointing
feet outward with a bent back risks spinal strain.
Q6. How far out from the structure should the base of a portable ladder
extended to 20 feet be placed? [Multiple Choice]
A) two feet
B) Five feet
C) one foot
3
, D) ten feet
Answer: Five feet
Explanation: The guide gives a specific placement for ladder base relative to height: for a 20-foot
extension, the base should be five feet out to achieve a safe angle. Placing it only one or two feet
out would make the ladder too steep; ten feet out would be too shallow for proper stability at
that height.
Q7. When lifting a 25-lb box, what is the best lifting practice? [Multiple Choice]
A) keep the legs straight and bend at the waist
B) use a hand truck
C) ask a coworker for assistance
D) keep the back straight and lift with the legs
Answer: keep the back straight and lift with the legs
Explanation: The guide recommends keeping the back straight and lifting with the legs as the
correct manual lifting technique. Bending at the waist with legs straight increases back strain.
Using a hand truck or asking for assistance are alternative safe options but are not described as
the primary best practice for a single-person lift in this specific guidance.
Q8. Which device is generally used to increase or decrease voltage? [Multiple Choice]
A) rectifier
B) shunt
C) transformer
D) voltmeter
Answer: transformer
Explanation: A transformer is the device normally used to increase or decrease alternating
voltages, and the guide lists it for that purpose. A rectifier converts AC to DC, a voltmeter
measures voltage, and a shunt is used for current measurement or diversion; none are used
primarily to change voltage levels as a transformer does.
Q9. If a ladder has a broken rung, what is the best practice? [Multiple Choice]
A) repair the rung with duct tape
B) repair the rung with electrical tape
C) repair the rung with tie wire
4
2026/2027 Update) 100% Verified Actual
Exam Questions & Answers | Grade A
This comprehensive Electrical Craft Helper Study Guide is designed to help
candidates prepare for and pass entry-level utility and trade assessments. Packed
with over 100 practice questions and detailed answers, it builds the foundational
knowledge and technical confidence required to succeed in electrical support
roles.
Key Exam Topics Covered
• Electrical Fundamentals: Basic circuitry, terminology, voltage
tolerances, and relay types.
• Hand and Power Tools: Proper tool identification, usage, and safety
maintenance (e.g., conduit couplings, measuring tools).
• Mechanical Aptitude: Mechanical theory, gear movements, and pulley
systems.
• Safety Procedures: Job site safety protocols, equipment handling, and
OSHA guidelines.
• Basic Math & Spatial Reasoning: Arithmetic, geometry, and map/route
reading.
Why Choose This Guide?
• Realistic Practice: Mimics the format and difficulty of official civil service
and utility tests.
• Detailed Correct answers
• Instant Accessibility: Provided as a downloadable PDF format for on-
the-go studying across all your devices
1
,Q1. Which component protects a power line against lightning damage by
carrying the charge away from the power line? [Multiple Choice]
A) phase wires
B) transformers
C) circuit breakers
D) ground wires
Answer: ground wires
Explanation: Ground wires provide a path to carry charge away from a power line, protecting it
from lightning-related damage as stated in the guide. Transformers change voltages, circuit
breakers protect against overloads or faults, and phase wires are conductors carrying current;
none of those are described as the element that carries lightning charge away.
Q2. How many 120-foot lengths of wire can be cut from five 500-foot reels?
[Multiple Choice]
A) 18
B) 22
C) 16
D) 20
Answer: 20
Explanation: Five 500-foot reels total 2500 feet of wire. Dividing 2500 by 120 gives 20 full 120-
foot lengths. The other numbers are results of incorrect division or rounding and do not match
the total footage available.
Q3. When should drill bits and drill motors be removed and returned to storage?
[Multiple Choice]
A) at the end of each application
B) at the completion of the last application of that tool
C) at the end of the work day only
D) at the completion of the whole job
Answer: at the completion of the last application of that tool
Explanation: The guide advises returning drill bits and drill motors to their cases at the
completion of the last application of that tool, which means once you are done using that tool for
the tasks it was needed for. Returning them only at the end of the day or only after the whole job
2
, risks leaving tools exposed or misplaced; returning them after each application is overly frequent
compared to the stated guidance.
Q4. What is the best tool to verify the dimensions of a high-voltage equipment
room (e.g., 125 ft x 75 ft) as stated in the engineering design? [Multiple Choice]
A) 100-foot cloth measuring tape
B) pacing
C) wooden folding rule
D) metallic measuring tape
Answer: wooden folding rule
Explanation: The guide identifies the wooden folding rule as the best tool for verifying room
dimensions in that context—likely because it is long and rigid enough for building measurements
in that setting. A metallic tape or a 100-foot cloth tape are measuring tools but were not
specified as the preferred choice in the guide for this verification, and pacing is an imprecise
estimate rather than a measurement tool.
Q5. Of the following, how should you stand when lifting a heavy object from the
ground? [Multiple Choice]
A) close together, pointed in the same way, and with the knees stiff
B) close together, right foot forward, knees stiff, and the back upright
C) a little apart, pointed outward, with the knees and back both bent
D) a little apart, pointed the same way, with knees bent and back upright
Answer: a little apart, pointed the same way, with knees bent and back upright
Explanation: The guide specifies standing with feet a little apart, pointed the same way, knees
bent, and back upright—this stance gives stability and lets you lift with leg muscles while keeping
the back straight. Standing with feet close together or with knees stiff reduces stability; pointing
feet outward with a bent back risks spinal strain.
Q6. How far out from the structure should the base of a portable ladder
extended to 20 feet be placed? [Multiple Choice]
A) two feet
B) Five feet
C) one foot
3
, D) ten feet
Answer: Five feet
Explanation: The guide gives a specific placement for ladder base relative to height: for a 20-foot
extension, the base should be five feet out to achieve a safe angle. Placing it only one or two feet
out would make the ladder too steep; ten feet out would be too shallow for proper stability at
that height.
Q7. When lifting a 25-lb box, what is the best lifting practice? [Multiple Choice]
A) keep the legs straight and bend at the waist
B) use a hand truck
C) ask a coworker for assistance
D) keep the back straight and lift with the legs
Answer: keep the back straight and lift with the legs
Explanation: The guide recommends keeping the back straight and lifting with the legs as the
correct manual lifting technique. Bending at the waist with legs straight increases back strain.
Using a hand truck or asking for assistance are alternative safe options but are not described as
the primary best practice for a single-person lift in this specific guidance.
Q8. Which device is generally used to increase or decrease voltage? [Multiple Choice]
A) rectifier
B) shunt
C) transformer
D) voltmeter
Answer: transformer
Explanation: A transformer is the device normally used to increase or decrease alternating
voltages, and the guide lists it for that purpose. A rectifier converts AC to DC, a voltmeter
measures voltage, and a shunt is used for current measurement or diversion; none are used
primarily to change voltage levels as a transformer does.
Q9. If a ladder has a broken rung, what is the best practice? [Multiple Choice]
A) repair the rung with duct tape
B) repair the rung with electrical tape
C) repair the rung with tie wire
4
