ProTech Electrical Job info
Burns are the most common shock-related injury. An electrical accident can result in an electrical burn, arc burn, thermal contact burn, or a combination of burns.
True
What type of anchor comes in zinc-plated, hot-dipped galvanized, and stainless steel?
Wedge Anchor
Which of the following are most important when determining what male fastener to use?
Weight of object, thickness of material, embedment depth
What information is required to determine the size of fastener to be used?
Weight of the object, fixture hole size, load tension type
When installing aluminum conductors inside a structure, it must be the ? series alloy.
486B
A hammer having a ? or a ? head should never be used for electrical work.
damaged / loose
Since ? are negatively charged, the direction of electron current flow is negative to positive.
electrons
Entry supervisors must ____? .
ensure that entry operations remain consistent with the entry permit and that acceptable entry conditions are maintained & know space hazards including information on the mode of exposure, signs or symptoms and consequences
Medium-voltage insulated conductor ? types include cross-linked polyethylene (XLPE) and ethylene propylene rubber (EPR).
insulation
In addition to muscle contractions that cause "freezing," electrical shocks also can cause ________? muscle reactions. These reactions can result in a wide range of other injuries from collisions or falls, including bruises, bone fractures, and even death.
involuntary
Global standards for conductor stranding include ? resistance and ? cross-sectional area.
maximum DC / minimum
To get a tool or piece of material up to the scaffold from the ground, you should ? .
use a hand line and bucket or other receptacle
How much deeper than the anchor being installed should the hole be drilled?
1/4" to 1/2" deeper
Which of the following describes a conductor with the product description of 10 - 19 SD CU THHN-THWN 2?
10 AWG with 19 strands, soft copper conductor
What is the rule of thumb for the spacing between concrete fasteners?
10 anchor diameters
Interior partition walls are built with lighter-weight, ? studs.
25-gauge
Concrete is called "green concrete" for how many days?
28 days
The 1/4-inch concrete screw requires what size bit?
3/16"
Type AC armored cable must be secured every ? .
4.5'
The 3/16-inch concrete screw requires what size bit?
5/32"
Type MC metal-clad cable must be secured every ? .
6'
The maximum voltage rating for NM-B is ? .
600 V
The maximum voltage rating for THHN and THWN conductors is ? .
600 V
The maximum voltage rating for UF-B is ? .
600 V
Non-metallic sheathed cable ampacity is limited to ? temperature rating.
60°C
The NM cables marked with "-B" designate the use of conductors with ? insulation.
90°C
Rings and jewelry worn on the job are ? to an Electrical Worker.
A hazard
Which type of armored cable is listed under UL 4, which is a prescriptive standard, with permitted conductor sizes of 14 AWG through 1 AWG only?
AC
What must be used to drill a hole in the masonry when installing a masonry fastener?
ANSI standard carbide bit Hammer drill
? wrenches are designed to provide a wide range of applications in a single tool.
Adjustable
What factor is not important when determining the length of anchor to be used?
Anchor diameter
When fastening a heavy item to a brick façade wall, which of the following is the most important?
Anchor the item to the main structure and not the brick itself.
Most building wire, such as THHN and XHHW, are Class ? stranding.
B
? are a type of aerial work platform that is attached to extension arms that are recessed within one another—like a refractor style of telescope.
Boom lifts
Which of the two types of ropelay stranded conductors is more flexible?
Bunched
Before the anchor is placed in the hole, workers should ? .
Clean the hole out of all dust and debris
Which of the four basic stranding types creates the largest outside diameter of a conductor?
Concentric
How important is the diameter of the hole in the base material when installing a masonry fastener?
Critically important
What style of anchor would be considered a female type fastener?
Drop-in anchor Single expansion
A common but perhaps overlooked conductor is the surface or subsurface of the ? .
Earth
A business type occupancy is one where goods are for sale, such as a grocery store.
False
It is safe to throw or toss a tool to someone on a scaffold only under certain conditions.
False
Statistically, the top rung of a ladder is the most dangerous.
False
Stone veneers are used as a structural aspect of a wall.
False
The rubber or vinyl handgrips found on most pliers are designed to protect the users from electrical shock.
False
What do mechanical type masonry fasteners use to obtain their holding values?
Friction
Which type(s) of non-destructive testing equipment does not require access to both sides of the concrete?
Ground penetrating radar
? -drawn copper conductors have the lowest conductivity and highest resistivity.
Hard
The apprentice is in the public relations business. What person and/or group does the apprentice represent?
Him/herself Organized labor Union contractors
Which type of MEWP lift offers protection from electric shock and electrocution?
Insulated lifts
Where is the following statement from?The purpose of this code is to establish the minimum requirements to provide a reasonable level of safety, public health and general welfare through strength, means of egress facilities, stability, sanitation, adequate light and ventilation, energy conservation, and safety to life and property from fire, explosion and other hazards, and to provide a reasonable level of safety to fire fighters and emergency responders during emergency operations.
International Building Code
Mortar is a binding material, made with ? , sand, lime, and water.
Portland cement
? is the generic term for the process by which a concrete section is compressed, generally by steel cables called tendons.
Prestressing
Which of the following types of conductors may be directly buried in the ground?
RHW-2 USE
Application for Type ? conductors include: Residential Indoor (dry location) and outdoor (wet location) installation Above ground installations only
SE
The employer ? advise employees of the location of energized electric power circuits, the hazards involved, and the protective measures to be taken.
SHALL!!
What style of anchor would be considered a male type fastener?
Sleeve anchor Wedge anchor
? copper conductors have a smaller outside diameter and are cheaper to manufacture than ? copper conductors.
Solid / stranded
Type ? conductor applications: General-purpose single conductor for installation in conduit or cable tray Smallest OD and lowest cost 600V single conductors
THHN
The tools a contractor puts on a job represent a sizable investment.
TRUE
Which of the following is not an advantage of building with concrete?
Tensile and shear strength
A Journey-level worker is told to run a three-inch conduit across a room and decides to use a channel-iron system. The apprentice suggests that one-hole straps might be quicker. What might happen?
The Journey-level worker should explain the reasoning behind his or her decision. The apprentice should respect and defer to the Journey-level worker's experience.
What do all male masonry fasteners (except for the concrete screw) require the hole to equal?
The anchor diameter
Which kind of drywall or hollow wall anchor comes in the largest diameter?
Toggle Bolts
Which kind of drywall or hollow wall anchor comes in the largest diameter?
Toggle bolts
Lumber can be treated to resist flame spread and smoke.
True
Post-tensioning is most often used with large, heavy concrete sections that are not easily transported.
True
Pre-engineered buildings can be purchased in packages that include the predrilled, structural steel framing system, the metal roofing system, and wall panels.
True
The IBC limits wood structures in height and overall area.
True
The international building code may limit the height and area of a building based on type of construction, occupancy type, and whether there is an automatic sprinkler system installed throughout the building.
True
What is the most stringent type of construction?
Type I
Type ? cable is defined as a factory assembly of one or more insulated conductors with an integral or an overall covering of non-metallic material suitable for direct burial in the earth.
UF
Application for Type ? conductors include: Residential Indoor (dry location) and outdoor (wet location) installation Rated for direct burial installation
UF-B
The "E" number print marking stamped on a conductor, such as "E23919," represents the ? .
UL file listing
Which term is commonly used interchangeably with conductor?
Wire
Which of the following construction materials is renewable, is recyclable, and reduces the carbon footprint?
Wood
Which of the following is the oldest of the main construction materials?
Wood
What type of fastener is best suited to a dry environment?
Zinc-plated
Before getting down from a scaffold, you should always check to be sure that materials or tools ______? .
are not left in a position from which they might fall if the scaffold is moved
If one or more entrants suffers an injury or illness and is unable to exit the space without help, the ______? must initiate a rescue.
attendant
When non-reinforced concrete breaks, it happens very quickly. This is called a(n) ? failure.
brittle
THHN conductors ? be used for direct burial installations.
cannot
The ? is used to mark the center of a hole before drilling.
center punch
Manufacturers refer to number 14, 12, and 10 AWG size conductors as ? size conductors.
circuit
A(n) ________? is "one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has the authority to take prompt corrective measures to eliminate them."
competent person
Fuses and circuit breakers are designed to protect ____?
conductors and equipment
Structural steel beams are rolled while they are ? .
hot
The life of your hand tools can be directly attributed to how well they are ? .
selected stored taken care of used
A drop-in anchor requires the use of a(n) ? .
setting tool
Medium-voltage insulated conductors ? types include tape, corrugated, concentric neutral, and tape plus concentric neutral.
shield
To attach an item to a hollow wall, the best support will come from the ? .
stud
If a person could not readily escape from the space in an emergency, the space is considered ? .
to have a limited or restricted means of exit
What dangers are associated with accumulated trash on a jobsite?
trash is a fire hazard. trash makes tripping or falls possible. trash conceals dangers that can cause injuries.
There are two types of lay direction: the S-twist, which is for ? applications, and the Z-twist, which is for ? applications.
underground / overhead
Concrete blocks may be reinforced by using ? .
vertical bracing steel rebar and grout horizontal bracing
The most basic division of wire and cable technology is made on the basis of ? .
voltage
Lay length impacts the ? and ? of a conductor.
weight / DC resistance
A typical application of ropelay stranded conductors is ? .
welding cable
