Residential Electrical Test – electrical systems concepts, wiring methods, and
revision practice material
the NEC is the basic standard; local and state codes are to be considered also. - ANS ✔✔What
code sets standards for electrical installation work?
The local electrical inspection authority - ANS ✔✔what authority enforces the requirements set
by the NEC?
Minimum - ANS ✔✔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. - ANS ✔✔what do the letters "UL" signify?
NEC 110.3(B) - ANS ✔✔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 - ANS ✔✔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."* - ANS ✔✔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."* - ANS ✔✔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). - ANS ✔✔Name
two nationally recognized testing labs
No. Approval is up to the Authority Having Jurisdiction. See NEC 90.4 and 110.2. - ANS ✔✔do
Underwriters laboratories (UL) and the other recognized testing labs "approve" products?
They test the products for conformance to applicable safety standards. - ANS ✔✔what do the
testing laboratories do?
Informative Annex J includes information that is intended to assist the users of the Code in
properly considering the various electrical design constraints of other building systems and are
part of the 2010 ADA Standards for Accessible Design. The Informative Annex is not
enforceable. The basic NEC rules still apply. Local communities, counties, states, and/or other
govern-mental bodies might have requirements. Check with your local inspection authority. Ask
them if there are any requirements or suggestions that you might need to fo - ANS ✔✔does the
NEC make suggestions about how to wire a house that will be occupied by handicapped
persons?
OSHA - ANS ✔✔What federal organization dictates requirements for work-related safety issues?
Turn off the power on the circuit you are working on, tag it, and lock the disconnect in the OFF
position. - ANS ✔✔what can you do to reduce or eliminate the possibility of receiving an
electric shock when working on electrical circuits?
The NEC defines a qualified person as "One who has skills and knowledge related to the
construction and operation of the electrical equipment and installations and has received safety
training to recognize and avoid the hazards involved."* (70E) - ANS ✔✔what is the NEC
definition of a "qualified person"
revision practice material
the NEC is the basic standard; local and state codes are to be considered also. - ANS ✔✔What
code sets standards for electrical installation work?
The local electrical inspection authority - ANS ✔✔what authority enforces the requirements set
by the NEC?
Minimum - ANS ✔✔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. - ANS ✔✔what do the letters "UL" signify?
NEC 110.3(B) - ANS ✔✔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 - ANS ✔✔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."* - ANS ✔✔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."* - ANS ✔✔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). - ANS ✔✔Name
two nationally recognized testing labs
No. Approval is up to the Authority Having Jurisdiction. See NEC 90.4 and 110.2. - ANS ✔✔do
Underwriters laboratories (UL) and the other recognized testing labs "approve" products?
They test the products for conformance to applicable safety standards. - ANS ✔✔what do the
testing laboratories do?
Informative Annex J includes information that is intended to assist the users of the Code in
properly considering the various electrical design constraints of other building systems and are
part of the 2010 ADA Standards for Accessible Design. The Informative Annex is not
enforceable. The basic NEC rules still apply. Local communities, counties, states, and/or other
govern-mental bodies might have requirements. Check with your local inspection authority. Ask
them if there are any requirements or suggestions that you might need to fo - ANS ✔✔does the
NEC make suggestions about how to wire a house that will be occupied by handicapped
persons?
OSHA - ANS ✔✔What federal organization dictates requirements for work-related safety issues?
Turn off the power on the circuit you are working on, tag it, and lock the disconnect in the OFF
position. - ANS ✔✔what can you do to reduce or eliminate the possibility of receiving an
electric shock when working on electrical circuits?
The NEC defines a qualified person as "One who has skills and knowledge related to the
construction and operation of the electrical equipment and installations and has received safety
training to recognize and avoid the hazards involved."* (70E) - ANS ✔✔what is the NEC
definition of a "qualified person"
