Job information 1 review

What are some key factors to remember when setting up for a wire pull?

use gravity to your advantage, setup reel somewhere it will be able to stay lubricate wires/cable. Proper selection of tools and materials calculate pull calculations review laws/codes. etc

Know the different layers of MV cable construction.

Medium-voltage cable layers inside to outside : conductor , conductor semi conductor, insulation, insulation semiconductor, tapeshield, jacket

A dirty job site is a ______ job site.

Hazardous/dangerous

What are guardrails and toe boards on a rolling scaffold? What do they do?

Guardrails are safety barriers installed at the edges of a scaffold to prevent falls, while toe boards are barriers at the bottom that prevent tools and materials from falling off. Together, they enhance overall safety on a rolling scaffold.

A job briefing should cover what?

Hazards on job, work procedures involved, scope of work, special precautions, energy-source centers and required ppe

A cable assembly that enters a fire resistive wall and exits the opposite side of the wall is considered to be a through penetration. T/F

true

If a space contains or has the potential to contain a hazardous

atmosphere, it is considered a permit space? T/F

true

If a device has terminals, what does that mean?

2 purposes, to serve as a point of contact to building wire and to bundle stranded wire.

GFCI

ground fault circuit interrupter - fast acting circuit breaker designed to shut off power in the event of a ground fault.

Choosing the right ladder for the job includes choosing the appropriate material, size, style, weight rating, or all of the above?

all of the above

Know the different types of male style concrete fasteners.

Wedge anchors, Sleeve anchors, Strike Anchors, concrete anchors, split drive anchors, hammer drive anchors.

According to the NFPA, survivors caught in a fire cannot see ____ “ in front of them?

12 feet

What are the pros and cons of using compression style pulling heads?

pros- quick and easy to setup and pull

cons- sacrificial, one time use only

What does the term cable refer to?

an assembly of one or more wires running side by side or bundled, which is used as an electrical conductor to carry electrical current

When would we choose to use the looping tool on our strippers?

to create a loop that will easily attach to terminals on a device

What are pulling ropes and what do they do?

conductor pulling ropes are designed for breakage strength and minimal stretch, they aid in the movement of electrical wires through conduits and walls

What is the “purpose” of the international building code?

each code clearly indicates its reason for existence

What are CMU’s?

concrete masonry units aka concrete blocks or cinder blocks

How do we properly store our large reels of conductors?

store reels on a hard surface so flanges do not sink and then damage cable. reels should also be kept out of harms way both physically and away from the environmental hazard

What is a vertical mast lift?

aerial work platform that allows access to tight spaces; multi stage or telescopic mast small footprint

A mil is a unit of measure equal to one thousandth of an inch? T/F

True

Basic tool ID

see module 2 : lesson 1 and 2

Describe the roles of an attendant, authorized entrant, entry supervisor.

attendant- an individual stationed outside one or more permit spaces who monitors conditions and prevents unauthorized entry

Authorized entrant - a worker who is authorized to enter a permit space.

Entry supervisor - a qualified person responsible for overseeing entry operations.

A listed through penetration that identifies a specific manufacturer’s

intumescent caulk can be installed using a different manufacturer’s caulk as long as the complete through penetration has been tested and listed with the different manufacturer’s caulk. T/F

false

ID various conduit supports.

see module 2 lesson 4

Module 7 slide 78

identification and polarity at wiring devices

brass terminal - hot

silver terminal - neutral

green terminal - ground

Once a vertical cable has been pulled, it should be secured in several locations ASAP. T/F

True

What is the human body's response to receiving 100mA of shock?

Extreme pain, respiratory arrest, severe muscle contractions. Death is possible.

What kind of proportion does the length of wire have to the amount of resistance it will have?

Direct Proportion ratio

What is green concrete

an environmentally friendly version of traditional concrete made by incorporating recycled materials.

406.3 (E)

Isolated ground receptacles. orange triangle on face of receptacle used to minimize electromagnetic interference by ensuring the grounding terminal is insulated from the receptacle and mounting

What happens if too much heat is applied to the jaws of a wrench?

when heat is applied to a tool the metallurgy can change, causing the hardness of the metal to become soft

A neat and orderly jobsite can be a great asset to the working crew and contractor, leading to future work? T/F

true

Why and where do we usually find cable tray cleats?

generally intended for power cables, used in both vertical and horizontal installations. also provide adequate support for conductors under fault conditions.

Under OSHA 1970, who is responsible for providing a safe and

healthful workplace?

employers

Module 3 slide 26

voltage ratings

300V - signaling, controls, wired communications

600V - power and light circuits (most common)

2000 - 25000 V - Medium voltage electrical power distribution circuits

Electricity has long been recognized as a serious workplace hazard, exposing employees to electric shock, electrocution, burns, fires, and explosions. T/F

True