ELECTRICIAN NCCER COMPREHENSIVE STUDY
GUIDE 2026 COMPLETE SOLUTIONS VERIFIED
◉ Normally, the easiest place to reverse the leads to change the
direction of rotation of a 3-phase motor is at the Answer: Motor
Starter
◉ What is the largest size conductor that can terminate on a 20amp
receptacle? Answer: 12awg
◉ Why can a lead acid battery be an explosive hazards? Answer:
Hydrogen gas is produced during charge and discharge
◉ What MAXIMUM number of bends is allowed between fittings in
one conduit run? Answer: 4 quarter bends or 360 degrees
◉ What size wire is standard for a 120- volt motor control systems?
Answer: #14
◉ In all cases where live parts are normally exposed on the front of
switchboards or motor control centers the working space in front of
such equipment MUST be what MINIMUM length? Answer: 3Ft
,◉ What is the interrupting rating of a fuse? Answer: The maximum
value of current that the fuse is designed to interrupt
◉ What is the PRIMARY purpose of P&ID? Answer: Provides scale
drawings and piping and instrumentation control systems
◉ A "megger" will be used to check a cable. The electrician MUST be
sure that the circuit is Answer: De-energized and locked, tagged out,
and tested
◉ What is the symbol for the primary side of a transformer?
Answer: H
◉ What is the function of a ballast in a flourescent fixture Answer:
Steps up the voltage
◉ An electrical fitting can be made explosion proof in which of the
following ways Answer: Using an amorphous sealed device
◉ Cable trays are usually supported by all the following means
EXCEPTS? Answer: #9 wire
◉ A 1 line diagram with simplified symbols indicates the Answer:
Interconnections and component parts of an electrical circuit
,◉ What is the purpose of Lockout/Tagout? Answer: Prevents
operation
◉ Which of the following factors is used to control the speed of an
induction motor? Answer: Frequency
◉ A 10-inch offset at 30 degrees is being made. What is the distance
between center-to-center bends? Answer: 20 inches
◉ What is an acceptable protection techniques for electrical
equipment in hazardous locations? Answer: Use duct-ignition proof
equipment
◉ What test or equipment can be used to locate a suspected short
circuit in 1- phase of a 3-phase motor? Answer: "megger"
◉ What will happen if moisture is inside a cadweld mold while the
weld is being performed? Answer: The cadweld mold could explode
◉ What is produced in a conduit run by making 2 equal bends in
opposite direction? Answer: Offset
, ◉ 4 inch square boxes are available with all of the following depths
EXCEPT Answer: 1 inch
◉ What is installed at an expansion joint to provide a continuous
ground between 2 sections of cable tray? Answer: A bonding jumper
◉ What color identifies an insulated, grounded number 4
conductors? Answer: Green
◉ Why is it important to torque bolts when busbars are connected?
Answer: Decreases resistance on the connection
◉ All the following are protective devices for motors EXCEPT
Answer: SOLENOID
◉ Service conductors are sized based on what factor? Answer: The
total calculated load of the building
◉ A holding contact na motor starter is normally connected in
parallel with the Answer: Start push button
◉ The number of complete AC cycles per second is called the
Answer: Frequency
GUIDE 2026 COMPLETE SOLUTIONS VERIFIED
◉ Normally, the easiest place to reverse the leads to change the
direction of rotation of a 3-phase motor is at the Answer: Motor
Starter
◉ What is the largest size conductor that can terminate on a 20amp
receptacle? Answer: 12awg
◉ Why can a lead acid battery be an explosive hazards? Answer:
Hydrogen gas is produced during charge and discharge
◉ What MAXIMUM number of bends is allowed between fittings in
one conduit run? Answer: 4 quarter bends or 360 degrees
◉ What size wire is standard for a 120- volt motor control systems?
Answer: #14
◉ In all cases where live parts are normally exposed on the front of
switchboards or motor control centers the working space in front of
such equipment MUST be what MINIMUM length? Answer: 3Ft
,◉ What is the interrupting rating of a fuse? Answer: The maximum
value of current that the fuse is designed to interrupt
◉ What is the PRIMARY purpose of P&ID? Answer: Provides scale
drawings and piping and instrumentation control systems
◉ A "megger" will be used to check a cable. The electrician MUST be
sure that the circuit is Answer: De-energized and locked, tagged out,
and tested
◉ What is the symbol for the primary side of a transformer?
Answer: H
◉ What is the function of a ballast in a flourescent fixture Answer:
Steps up the voltage
◉ An electrical fitting can be made explosion proof in which of the
following ways Answer: Using an amorphous sealed device
◉ Cable trays are usually supported by all the following means
EXCEPTS? Answer: #9 wire
◉ A 1 line diagram with simplified symbols indicates the Answer:
Interconnections and component parts of an electrical circuit
,◉ What is the purpose of Lockout/Tagout? Answer: Prevents
operation
◉ Which of the following factors is used to control the speed of an
induction motor? Answer: Frequency
◉ A 10-inch offset at 30 degrees is being made. What is the distance
between center-to-center bends? Answer: 20 inches
◉ What is an acceptable protection techniques for electrical
equipment in hazardous locations? Answer: Use duct-ignition proof
equipment
◉ What test or equipment can be used to locate a suspected short
circuit in 1- phase of a 3-phase motor? Answer: "megger"
◉ What will happen if moisture is inside a cadweld mold while the
weld is being performed? Answer: The cadweld mold could explode
◉ What is produced in a conduit run by making 2 equal bends in
opposite direction? Answer: Offset
, ◉ 4 inch square boxes are available with all of the following depths
EXCEPT Answer: 1 inch
◉ What is installed at an expansion joint to provide a continuous
ground between 2 sections of cable tray? Answer: A bonding jumper
◉ What color identifies an insulated, grounded number 4
conductors? Answer: Green
◉ Why is it important to torque bolts when busbars are connected?
Answer: Decreases resistance on the connection
◉ All the following are protective devices for motors EXCEPT
Answer: SOLENOID
◉ Service conductors are sized based on what factor? Answer: The
total calculated load of the building
◉ A holding contact na motor starter is normally connected in
parallel with the Answer: Start push button
◉ The number of complete AC cycles per second is called the
Answer: Frequency
