week 4 residential part 1
One of the most far-reaching NEC rules is 110.3(B), which states that _____ equipment shall be installed and used in
listed or labeled
in some instances, particularly in homes with _____, the architect might specify strip fluorescent or LED luminaries under the kitchen cabinets.
little outdoor exposure
All GFI devices in a garage are required to be readily accessible so that they may be tested at least _______, as required in manufacturers' instructions
monthly
To estimate to total load for a dwelling, the ______ of the dwelling must be calculated
occupied floor area
Cord sets rated 30 amps are referred to as dryer cords, and cord sets rated 40, 45, 50 amp are referred to as ____ cords
range
For on the job safety, ____ puts the burden of responsibility on the employer and can impose large fines for noncompliance with its safety rules
OSHA
Circuits supplying wall receptacles outlets for lighting loads are generally 15-amp circuits but are permitted by the code to be _____ amps
20
An arc flash can produce temperatures of ____°F.
35,000
Most public service commissions require that the voltage for residential services be held to _____ percent of the normal voltage as measured at the service point
5
Circuits rated 15 amps supplying two or more receptacle shall not contain receptacle rated over ______ amps
15
If low-voltage lighting products are market for use in damp or wet locations, the maximum voltage rating is _____ volts unless live parts are made inaccessible to contact during normal use
15
The recommended approach to provide adequate lighting in a residential garage is to install one ______ watt lamp or equivalent compact fluorescent or LED lamp on the ceiling above each side of an automobile
100
Good color retention in the kitchen area can only be achieved by using incandescent lamps
False
In each separate unfinished basement area that is not intended to be "lived in," at least one 125-volt, single phase, 15 or 20 amp receptacles must be installed, but it does not have to be GFCI protected
False
LOTO is the physical restraint of all hazardous energy sources that supply power to a piece of equipment
False
Quite often, a community will have a "homeowners only" license for electricians and contractors that limits their activity to working on wiring on houses only
False
The 120-volt major appliances such as food waste disposers are permitted to be connected to the 20-amps small-appliance branch circuits that serve the receptacles above the kitchen countertop
False
The NEC states that fixed cooking appliances that are fastened in place may be connected to 20 or 30 amp branch circuits
False
The ampacity of a conductor must be less than the rating of the overcurrent device protecting that conductor
False
The most important purpose of NEC is the practical safeguarding of property from hazards arising from the use of electricity
False
In most residential dishwashers, the motor and the booster heater operate at the same time
True
The international residential code requires indoor stairways to have lighting that will illuminate the landings and treads, and that the lighting shall be located in the immediate vicinity of each landing at the top and bottom of the stairs
True
Track lighting loads are considered to be part of the general lighting load for residential installations, based on 3 volt amp per sq. foot
True
All receptacle installed in a wet location must have an enclosure that is weatherproof, whether or not
an attachment plug cap is inserted
The NEC defines a ______ as "the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s)
branch circuit
Which of the following is not included when calculating the useable area of a dwelling to compute the required lighting load
crawl space
It is the _____ that is the harmful component of an electrical circuit
current
Continuous feed food waste disposers are usually controlled by a ____ -pole wall switch conveniently located above the countertop
single
The sound level rating used to define fan noise is expressed in ____.
sone
The recognized definition of a habitable room as a room in residential occupancy used for living, sleeping, cooking, and eating, but excluding bath, _____, and corridors
storage and service area
Each installation for a physically challenged person must be based on______
the specific needs of the individual who will occupy the home
If the receptacle that serve kitchen countertops have been wired according to the NEC, they would be supplied by at least _____ amp, small appliance branch circuits
two 20
Countertop receptacles must be supplied by at least ____small appliance branch circuits.
two 20-amps
Cables and insulated conductors installed in underground raceways shall be listed for use in
wet locations
Thermoset insulation
will char and crack if heated above its rated temperatures
