Residential Electrical Test (residential electric) Complete Questions with 100% Correct Answers Graded A+
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Course
Residential Electrical Services
Institution
Residential Electrical Services
Residential Electrical Test (residential electric) Complete Questions with 100% Correct Answers
the NEC is the basic standard; local and state codes are to be considered also.
What code sets standards for electrical installation work?
The local electrical inspection authority
what authority enf...
Residential Electrical Test (residential electric)
Complete Questions with 100% Correct Answers
the NEC is the basic standard; local and state codes are to be considered also.
What code sets standards for electrical installation work?
The local electrical inspection authority
what authority enforces the requirements set by the NEC?
Minimum
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.
what do the letters "UL" signify?
NEC 110.3(B)
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
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."*
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."*
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).
Name two nationally recognized testing labs
No. Approval is up to the Authority Having Jurisdiction. See NEC 90.4 and 110.2.
do Underwriters laboratories (UL) and the other recognized testing labs "approve" products?
, They test the products for conformance to applicable safety standards.
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
does the NEC make suggestions about how to wire a house that will be occupied by handicapped
persons?
OSHA
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.
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)
what is the NEC definition of a "qualified person"
Not necessarily, usually depending on the voltage.
are low-voltage systems totally safe?
NFPA 70E
what NFPA standard specifically covers safety in the workplace?
Personal Protective Equipment.
What does PPE stand for?
An arc flash is the tremendous explosion that happens when a short circuit or ground fault occurs on an
electrical system that is capable of delivering high fault current.
briefly explain an arc flash
Apprenticeship programs, Consumer Product Safety Commission, National Safety Council, Occupational
Safety & Health Act, National Fire Protection Association, and the American Heart Association
where might you obtain information about on the job safety and safety training?
No
is it a safe practice to use a step ladder in which the spreaders have not been fully locked?
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