NEC Electrical Flashcards
To insure that residential wiring is correctly and safely installed most communities have adapted what for their communities?
Local electric codes
A well planned, properly installed residential wiring system will:
Supply all of a home owners electrical needs, be safe, be convenient
The first national electric code was established in:
1911
What group sponsors the NEC?
National fire protection Association
The natural electric code is commonly called the:
The code or NEC
The purpose of the national electric code is to:
Provide information to assure the safe installation of electrical wiring for the protection of life and property
The NEC is revised every:
Three years
When is the natural electric code a law?
It does not care the force of law unless adopted by a the governing body where it will be applied
What group may include special code requirements in addition to those found in the national electric code?
Local authorities
Most localities require what before the electrical installation can begin?
And electrical permit
Who is the final authority in expecting local codes and the NEC?
The local inspector
Local code amendments may:
Exceed the standards of the NEC and never fall below the minimum standards defined by the code.
A research and testing organization a test electrical materials determine if electrical products meet minimum standards for safety and quality is:
Underwriters laboratory.
Electrical device and equipment that bears the underwriters laboratory certification Mark meet what kind of standards?
Minimum safety standards
Electrical testing organizations include:
Underwriters laboratory, intertek testing services, Canadian standards Association
What is a product testing and certification organization that assures electrical products are manufactured and conform to industry standards?
Intertek testing services
An organization that testing certifies electrical products and equipment in Canada is?
Canadian standards Association
An Amp is:
The rate at which electrical current is measured
Cable is defined as:
Two or more conductors group together in a single unit covered by a protective sheath
A circuit is defined as:
A pass through which current flows
A circuit breaker is defined as:
A safety device that provides overcurrent protection for a circuit
Conductor is defined as:
A safety device used control the flow of electricity in a circuit
Current is defined as:
Movement of electrons through an electrical conductor
A grounding conductor is defined as:
A conductor that transmits electrical current to the earth in the event of a short circuit
What is the definition for a grounded circuit conductor?
The conductor that returns current under zero pressure
What is the ground fault circuit interrupter?
A device that provides protection for people against shock from a short circuit
Define hot conductor:
Conductor that carries electrical current to the load and an ungrounded conductor
Define load:
Common name for electrical equipment and devices connected to an ungrounded conductor
Define outlet:
Point on a circuit at which current is utilized for receptacles, switches, lighting, appliances, etc.
Define neutral conductor:
Conductor that carries only the ampere imbalance between two ungrounded conductors.
Define pigtail:
Short wire, used to connect 2/more wires
An important consideration for any electrical job is:
Safety
What type power tools should be used?
UL listed & double insulated
For safety, hand tools used in electrical work should:
Have insulated handles
How are power extension cords to be pulled out of a receptacle:
Grasp & pull directly on the plug
The use of portable & permanent ground fault circuit during construction will help prevent:
Electrical shock
What type ladders are safe in electrical work?
Wood or fiberglass
Without testing the circuit, what should never be assumed?
That it is not energized
What is the tool that test circuits for voltage and continuity?
Volt-ohm meter
On a wooden floor house what is the horizontal framing member that attached to the steel plate and form the structural support for the floor and walls?
Floor joist
On a wooden floor house what is the wood or metal structure which wrist on the top of the foundation and forms a frame which the floor joist or attached?
Sill plate
On my wood floor house the floor joist are usually what dimension lumber?
2 by 8, 2 by 10, 2 by 12
The lower horizontal structural parlaying law frame that rest on the subfloor concrete slab is called:
Bottom plate
Vertical board to the wall framework is:
Wall studs
Walls studs are made of what dimension lumber?
2 x 4 or 2 x 6
The top horizontal portion of the wall framework is:
Top plate
The top plate is made up of what dimension lumber?
2 x 4 or 2 x 6
The horizontal framing members that rest on top of the wall framing studs and forms the ceiling framework is:
Ceiling joist
The framework supported by the top plate informed through structure on the building are:
Rafters
What is defined as an electrical circuit?
Two more conductors through which electrical current flows from a power source to electrical cable to one or more outlets
Electrical cable is compromised of two or more wires which are usually made of what?
Copper or aluminum
The local power supplier or utility company in our area is what company?
REA, Southwestern Electric Power Company, energy Corporation
Kitchen countertop small appliance circuits may serve:
Only receptacles outlets in other adjacent room such as the pantry breakfast room and dining room
Another name for individual equipment circuits is?
Dedicated circuits
The NEC requires the bathrooms be served by special 20 ampere circuit to serve:
Only bathroom and no other outlets are allowed to be connected to the circuit
Quiring plan supply By who usually often indicate the circuit routes by a system of lines that connect the outlets and switches in the wiring system?
Architectural and electrical engineering firms
