Victor Valley College| CT 120A
EWR Chapter 1 Mastery Exam | National Electrical Code (NEC 90.1,
90.5, 110.3(B)) Purpose & Scope , Electrical Installation
Standards , Authority Having Jurisdiction (AHJ) , Minimum Safety
Requirements , UL Listing & Labeling Compliance , Underwriters
Laboratories (UL) , Intertek & CSA Certification , OSHA Workplace
Safety Regulations , NFPA 70E Electrical Safety in the Workplace ,
Personal Protective Equipment (PPE) , Lockout/Tagout (LOTO)
Procedures , Qualified Person Definition , Electrical Shock & Arc
Flash Hazard Prevention , Safe Work Practices , Code
Interpretation of “Shall” , Equipment Installation Compliance ,
Residential & Commercial Wiring Fundamentals , Lighting Load
Calculations (VA/ft² & VA/m²) , Unit Conversions (cm³ to in³, Watts
to BTU/hr) , Load Demand Analysis , Electrical System Limitations
& Overload Risks , Low-Voltage Safety Misconceptions , Hazard
Recognition & Risk Mitigation , Testing Laboratories & Product
Certification Exam Questions Verified and Provided with Complete
A+ Graded Answers Latest Updated 2026
What is the purpose of the NEC?
NEC 90.1 "the purpose of this code is the practical safeguarding of persons and property form
hazards arising from the use of electricity. This code is not intended as a design specification or
an instruction manual for untrained persons."
What code sets standards for electrical installation work?
The NEC - National Electrical Code but local and state electrical reg and codes are the minimum
requirements
, What authority enforces the requirements set by the NEC?
Local authorities (building commissioners/directors of development)
Does the NEC provide minimum or maximum standards?
minimum
What do the letters UL signify?
Underwriters laboratories
What section of the NEC states that all listed or labeled equipment shall be installed or used in
accordance with any instructions included in the listing or labeling?
NEC 110.3 (B)
When the word "shall" in the NEC reference means that it must or maybe done?
must
Does compliance with the NEC always results in a electrical installation that is adequate, safe,
and efficient? why?
No. NEC 90.1 (B) states "this code contains provisions that are considered necessary for safety.
compliance there with and proper maintenance will result in an installation that is essentially
EWR Chapter 1 Mastery Exam | National Electrical Code (NEC 90.1,
90.5, 110.3(B)) Purpose & Scope , Electrical Installation
Standards , Authority Having Jurisdiction (AHJ) , Minimum Safety
Requirements , UL Listing & Labeling Compliance , Underwriters
Laboratories (UL) , Intertek & CSA Certification , OSHA Workplace
Safety Regulations , NFPA 70E Electrical Safety in the Workplace ,
Personal Protective Equipment (PPE) , Lockout/Tagout (LOTO)
Procedures , Qualified Person Definition , Electrical Shock & Arc
Flash Hazard Prevention , Safe Work Practices , Code
Interpretation of “Shall” , Equipment Installation Compliance ,
Residential & Commercial Wiring Fundamentals , Lighting Load
Calculations (VA/ft² & VA/m²) , Unit Conversions (cm³ to in³, Watts
to BTU/hr) , Load Demand Analysis , Electrical System Limitations
& Overload Risks , Low-Voltage Safety Misconceptions , Hazard
Recognition & Risk Mitigation , Testing Laboratories & Product
Certification Exam Questions Verified and Provided with Complete
A+ Graded Answers Latest Updated 2026
What is the purpose of the NEC?
NEC 90.1 "the purpose of this code is the practical safeguarding of persons and property form
hazards arising from the use of electricity. This code is not intended as a design specification or
an instruction manual for untrained persons."
What code sets standards for electrical installation work?
The NEC - National Electrical Code but local and state electrical reg and codes are the minimum
requirements
, What authority enforces the requirements set by the NEC?
Local authorities (building commissioners/directors of development)
Does the NEC provide minimum or maximum standards?
minimum
What do the letters UL signify?
Underwriters laboratories
What section of the NEC states that all listed or labeled equipment shall be installed or used in
accordance with any instructions included in the listing or labeling?
NEC 110.3 (B)
When the word "shall" in the NEC reference means that it must or maybe done?
must
Does compliance with the NEC always results in a electrical installation that is adequate, safe,
and efficient? why?
No. NEC 90.1 (B) states "this code contains provisions that are considered necessary for safety.
compliance there with and proper maintenance will result in an installation that is essentially
