NM ES-3 (Updated): All Questions Answered With
Expert Insight
The NEC classifies Continuous Load as equipment running at a maximum load
of __ ____? Correct Ans - 3 hours NEC 100.1 (Definitions)
A continuous load is a load where the maximum current is expected to
continue for a certain length of time. This amount of time is? Correct Ans -
3 hours or more NEC 100.1 (Definitions)
If a cable is being installed in an area that is above a suspended ceiling that
contains completely enclosed air ducts what term or word identifies this
location? Correct Ans - Accessible NEC 100.1 (Definitions)
What is the definition for all grounds in a building? Correct Ans - Earth
NEC 100.1 (Definitions)
Nonconductive optical fiber cable contains no metallic members and no other
____ materials Correct Ans - Electrically conductive NEC 100.1
(Definitions)
A bare conductor is one with? Correct Ans - No Covering or insulation
whatsoever NEC 100.1 (Definitions)
A compartment or chamber to which one or more ducts are connected in
which forms part of the air distribution system is a ? Correct Ans - Plenum
NEC 100.1 (Definitions)
A device that establishes a connection between two or more conductors by
means of mechanical pressure and without the use of solder is called
Correct Ans - Pressure connector NEC 100.1 (Definitions)
Which of the following describes cleaning and lubricating compounds that can
cause severe damage to many plastic insulating materials: Correct Ans -
Deteriorating agents NEC 110.11 (Note 2)
, According to the NEC electrical equipment may not be mounted to concrete,
cinder block, or brick walls with one of these___. Correct Ans - Wooden
plugs NEC 110.13
What is the minimum width of working space requires for electrical
equipment that us 48 inches wide? Correct Ans - 48 inches NEC 110.26
(A) (2)
The minimum head room of working space above service equipment,
switchboards, panel boards, or motor control centers shall be at least:
Correct Ans - 6.5 feet NEC 110.26 (A) (3)
What must be provided for in all working spaces above all service equipment?
Correct Ans - illumination NEC 110.26 (D)
An overhead feeder must have a clearance of __ from chimneys, radio, and
television antennas. Correct Ans - 3 Feet NEC 225.19 B
Insulated conductors of number 6 or smaller intended for use as ground
conductors in a circuit must be either of the following colors Correct Ans -
Green or Green with one or more yellow stripes NEC 250.119
Which of the following is an acceptable marking method for the grounding
conductor on the ground type receptacle Correct Ans - Green colored
hexagonal head or shaped terminal screw or nut NEC 250.126
All of the following is acceptable as a ground except? Correct Ans - 10 foot
gas pipe NEC 250.52 (A)
What is the minimum length of a grounding rod in an application of less than
50 volts? Correct Ans - 8' NEC 250.52.5
What would be the maximum vertical spacing for a conductor support in a
vertical raceway that has an 18 gauge conductor? Correct Ans - 100 feet
NEC 30.19 (A) (TABLE)
What is the minimum clearance to the edge of a wood stud for a wire hole?
Correct Ans - 1 1/4 inches NEC 300.4 (A) (1)
Expert Insight
The NEC classifies Continuous Load as equipment running at a maximum load
of __ ____? Correct Ans - 3 hours NEC 100.1 (Definitions)
A continuous load is a load where the maximum current is expected to
continue for a certain length of time. This amount of time is? Correct Ans -
3 hours or more NEC 100.1 (Definitions)
If a cable is being installed in an area that is above a suspended ceiling that
contains completely enclosed air ducts what term or word identifies this
location? Correct Ans - Accessible NEC 100.1 (Definitions)
What is the definition for all grounds in a building? Correct Ans - Earth
NEC 100.1 (Definitions)
Nonconductive optical fiber cable contains no metallic members and no other
____ materials Correct Ans - Electrically conductive NEC 100.1
(Definitions)
A bare conductor is one with? Correct Ans - No Covering or insulation
whatsoever NEC 100.1 (Definitions)
A compartment or chamber to which one or more ducts are connected in
which forms part of the air distribution system is a ? Correct Ans - Plenum
NEC 100.1 (Definitions)
A device that establishes a connection between two or more conductors by
means of mechanical pressure and without the use of solder is called
Correct Ans - Pressure connector NEC 100.1 (Definitions)
Which of the following describes cleaning and lubricating compounds that can
cause severe damage to many plastic insulating materials: Correct Ans -
Deteriorating agents NEC 110.11 (Note 2)
, According to the NEC electrical equipment may not be mounted to concrete,
cinder block, or brick walls with one of these___. Correct Ans - Wooden
plugs NEC 110.13
What is the minimum width of working space requires for electrical
equipment that us 48 inches wide? Correct Ans - 48 inches NEC 110.26
(A) (2)
The minimum head room of working space above service equipment,
switchboards, panel boards, or motor control centers shall be at least:
Correct Ans - 6.5 feet NEC 110.26 (A) (3)
What must be provided for in all working spaces above all service equipment?
Correct Ans - illumination NEC 110.26 (D)
An overhead feeder must have a clearance of __ from chimneys, radio, and
television antennas. Correct Ans - 3 Feet NEC 225.19 B
Insulated conductors of number 6 or smaller intended for use as ground
conductors in a circuit must be either of the following colors Correct Ans -
Green or Green with one or more yellow stripes NEC 250.119
Which of the following is an acceptable marking method for the grounding
conductor on the ground type receptacle Correct Ans - Green colored
hexagonal head or shaped terminal screw or nut NEC 250.126
All of the following is acceptable as a ground except? Correct Ans - 10 foot
gas pipe NEC 250.52 (A)
What is the minimum length of a grounding rod in an application of less than
50 volts? Correct Ans - 8' NEC 250.52.5
What would be the maximum vertical spacing for a conductor support in a
vertical raceway that has an 18 gauge conductor? Correct Ans - 100 feet
NEC 30.19 (A) (TABLE)
What is the minimum clearance to the edge of a wood stud for a wire hole?
Correct Ans - 1 1/4 inches NEC 300.4 (A) (1)
