ELECTRICAL INSTALLATION ACTUAL
EXAM SOLVED QUESTIONS COMPLETE
STUDY GUIDE
●● The local electrical inspection authority
Answer: what authority enforces the requirements set by the NEC?
●● Minimum
Answer: does the NEC provide minimum or maximum standards?
●● When shown on an electrical product or in a certification mark, it
means the product is Listed by Underwriters Laboratories. It also means
that the product met applicable safety standards when it left the
manufacturer's plant.
Answer: what do the letters "UL" signify?
●● NEC 110.3(B)
Answer: 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?
●● Must
, Answer: when the word "shall" appears in an NEC referance, it means
(must) or (may) be done.
●● The NEC states in 90.1(A) that "The purpose of this Code is the
practical safeguarding of persons and property from hazards arising from
the use of electricity."*
Answer: What is the purpose of the NEC?
●● No. The NEC states in 90.1(B) that "This Code contains provisions
that are considered necessary for safety. Compliance therewith and
proper maintenance results in an installation that is essentially free from
hazard but not necessarily efficient, convenient, or adequate for good
service or future expansion of electrical use."*
Answer: does compliance with the NEC always result in an electrical
installation that is adequate, safe and efficient? why?
●● Underwriters Laboratories (UL) and Intertek Testing Services (ETL
listing mark).
Answer: Name two nationally recognized testing labs
●● No. Approval is up to the Authority Having Jurisdiction. See NEC
90.4 and 110.2.
Answer: do Underwriters laboratories (UL) and the other recognized
testing labs "approve" products?
EXAM SOLVED QUESTIONS COMPLETE
STUDY GUIDE
●● The local electrical inspection authority
Answer: what authority enforces the requirements set by the NEC?
●● Minimum
Answer: does the NEC provide minimum or maximum standards?
●● When shown on an electrical product or in a certification mark, it
means the product is Listed by Underwriters Laboratories. It also means
that the product met applicable safety standards when it left the
manufacturer's plant.
Answer: what do the letters "UL" signify?
●● NEC 110.3(B)
Answer: 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?
●● Must
, Answer: when the word "shall" appears in an NEC referance, it means
(must) or (may) be done.
●● The NEC states in 90.1(A) that "The purpose of this Code is the
practical safeguarding of persons and property from hazards arising from
the use of electricity."*
Answer: What is the purpose of the NEC?
●● No. The NEC states in 90.1(B) that "This Code contains provisions
that are considered necessary for safety. Compliance therewith and
proper maintenance results in an installation that is essentially free from
hazard but not necessarily efficient, convenient, or adequate for good
service or future expansion of electrical use."*
Answer: does compliance with the NEC always result in an electrical
installation that is adequate, safe and efficient? why?
●● Underwriters Laboratories (UL) and Intertek Testing Services (ETL
listing mark).
Answer: Name two nationally recognized testing labs
●● No. Approval is up to the Authority Having Jurisdiction. See NEC
90.4 and 110.2.
Answer: do Underwriters laboratories (UL) and the other recognized
testing labs "approve" products?
