NCCER Electrical Exam
f regulating cables are referred to as Parallel resistance heating cables
Heating cables should not be routed within how many 4"
inches of the edges of the pavement, drains, anchors, or
other objects in the concrete?
Electric heat tracing of pipelines is done for freeze For temperature maintenance of the process fluids
protection and
A line-sensing control uses a mechanical thermostat or actual pipe temperature
electrical controller to measure the
Heating cable for snow-melting is typically installed in a 12" on center
serpentine pattern
When installing heating cable, fasten the cable to the pipes Metal attachments
using plastic cable ties or
How far below the finished surface should snow-melting 1 ¹⁄2" to 2"
and anti-icing systems be installed?
A mineral-insulated cable is a type of Constant-wattage, series resistance heating cable
As the temperature surrounding a self-regulating heating Electrical resistance increases
cable increases, the
In hospitals, schools, and prisons, electrical heat trace temperature maintenance of domestic hot-water pipeline systems
systems are used for
Under strict safety guidelines, which of the following should A safety shorting probe
be used to discharge capacitors before working on de-
energized circuits?
Insulating gloves must be inspected by the user _____. Before each use
Class 1 rubber gloves have a maximum AC use voltage of 7,500V
_____.
The normal beating of a heart can be upset by an electrical 75mA
current as small as
OSHA safety standards for the construction industry are OSHA CFR 1926
contained in _____.
Stuvia 2026-2027
, NCCER Electrical Exam
When a guardrail cannot be attached to a building, a controlled access zone
solution may be to install a(n) _____.
A circuit has a source voltage of 50V and a current of 10A. 500
What is the power in watts?
If a circuit has 12 amps of current and the resistance is 20 240 volts
ohms, the applied voltage is
How many amps are there in the current of a circuit if the 70 amps
voltage source is 140V and the resistance is 2 ohms?
A 5 ohm resistor and a 20 ohm resistor are connected in 4 ohms
parallel. What is the total resistance of these two resistors?
If the resistance of a circuit is 25 ohms and the current is 2500 watts
10 amps, the power in watts is
Which of the following substances is considered a good Silicon
semiconductor
In a parallel circuit, the voltage drop is the same across all loads
What is the total resistance of three resistors in parallel 1.44 ohms
with values of 2 ohms, 8 ohms, and 14 ohms
What is the resistance of a light bulb that uses 15 watts of 15 ohms
power when placed across a 15 volt battery?
The purpose of a sealing fitting is to ____. Prevent the passage of gases, vapors, and flames through a conduit
EMT must be supported every 10 feet
What is the maximum allowable spacing between 10 feet
horizontal wireway supports?
What is another name for a standoff support? Minerallac
Which of the following shall only be applied when the Derating factors
number of current carrying conductors in a wireway
exceeds three?
Stuvia 2026-2027
f regulating cables are referred to as Parallel resistance heating cables
Heating cables should not be routed within how many 4"
inches of the edges of the pavement, drains, anchors, or
other objects in the concrete?
Electric heat tracing of pipelines is done for freeze For temperature maintenance of the process fluids
protection and
A line-sensing control uses a mechanical thermostat or actual pipe temperature
electrical controller to measure the
Heating cable for snow-melting is typically installed in a 12" on center
serpentine pattern
When installing heating cable, fasten the cable to the pipes Metal attachments
using plastic cable ties or
How far below the finished surface should snow-melting 1 ¹⁄2" to 2"
and anti-icing systems be installed?
A mineral-insulated cable is a type of Constant-wattage, series resistance heating cable
As the temperature surrounding a self-regulating heating Electrical resistance increases
cable increases, the
In hospitals, schools, and prisons, electrical heat trace temperature maintenance of domestic hot-water pipeline systems
systems are used for
Under strict safety guidelines, which of the following should A safety shorting probe
be used to discharge capacitors before working on de-
energized circuits?
Insulating gloves must be inspected by the user _____. Before each use
Class 1 rubber gloves have a maximum AC use voltage of 7,500V
_____.
The normal beating of a heart can be upset by an electrical 75mA
current as small as
OSHA safety standards for the construction industry are OSHA CFR 1926
contained in _____.
Stuvia 2026-2027
, NCCER Electrical Exam
When a guardrail cannot be attached to a building, a controlled access zone
solution may be to install a(n) _____.
A circuit has a source voltage of 50V and a current of 10A. 500
What is the power in watts?
If a circuit has 12 amps of current and the resistance is 20 240 volts
ohms, the applied voltage is
How many amps are there in the current of a circuit if the 70 amps
voltage source is 140V and the resistance is 2 ohms?
A 5 ohm resistor and a 20 ohm resistor are connected in 4 ohms
parallel. What is the total resistance of these two resistors?
If the resistance of a circuit is 25 ohms and the current is 2500 watts
10 amps, the power in watts is
Which of the following substances is considered a good Silicon
semiconductor
In a parallel circuit, the voltage drop is the same across all loads
What is the total resistance of three resistors in parallel 1.44 ohms
with values of 2 ohms, 8 ohms, and 14 ohms
What is the resistance of a light bulb that uses 15 watts of 15 ohms
power when placed across a 15 volt battery?
The purpose of a sealing fitting is to ____. Prevent the passage of gases, vapors, and flames through a conduit
EMT must be supported every 10 feet
What is the maximum allowable spacing between 10 feet
horizontal wireway supports?
What is another name for a standoff support? Minerallac
Which of the following shall only be applied when the Derating factors
number of current carrying conductors in a wireway
exceeds three?
Stuvia 2026-2027
