Residential Electrical Test (residential electric) Complete
Questions with 100% Correct Answers Graded A+
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?
You are responsible for your own safety
If a step ladder collapses whose fault is it?
To supplement the plans by giving specific information on materials and to help
in estimating costs.
what is the purpose of specifications?
Section 5 CODES, NEC, local electrical codes, and any applicable utility rules
what electrical codes must be conformed to?
Section 10 WORKSHOP Electrical metallic tubing (EMT), Type NM cable protected
in EMT from the joist space to the outlet, etc., or Type MC cable
what is the wiring method to be used in the workshop?
Section 12 CONDUCTOR SIZE Lighting branch circuits: 14 AWG Small-appliance
branch circuits: 12 AWG
what size conductors are to be used for the lighting branch circuits? what size for small-
appliance branch circuits?
Section 26 MAIN SERVICE 200 ampere service with one 200-ampere safety switch
and one 100-ampere safety switch.
what section of the specifications tells us the size of the service entrance to be installed
for this residence?
Questions with 100% Correct Answers Graded A+
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?
You are responsible for your own safety
If a step ladder collapses whose fault is it?
To supplement the plans by giving specific information on materials and to help
in estimating costs.
what is the purpose of specifications?
Section 5 CODES, NEC, local electrical codes, and any applicable utility rules
what electrical codes must be conformed to?
Section 10 WORKSHOP Electrical metallic tubing (EMT), Type NM cable protected
in EMT from the joist space to the outlet, etc., or Type MC cable
what is the wiring method to be used in the workshop?
Section 12 CONDUCTOR SIZE Lighting branch circuits: 14 AWG Small-appliance
branch circuits: 12 AWG
what size conductors are to be used for the lighting branch circuits? what size for small-
appliance branch circuits?
Section 26 MAIN SERVICE 200 ampere service with one 200-ampere safety switch
and one 100-ampere safety switch.
what section of the specifications tells us the size of the service entrance to be installed
for this residence?
