Test 1 Review Flashcards by Laura Battenberg

What is overcurrent?

Too much current

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3 types of overcurrent

Short circuit, overload, and ground fault

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What does overload mean?

Too much current in a circuit

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What does short circuit mean?

A shorter unintended pathway for current

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What does ground fault mean?

When electricity strays to an unintended pathway in the ground

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What is a red/black wire?

Hot/Ungrounded

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What is a white wire?

Neutral/Gorunded

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What is a bare/green wire?

Grounding/Ground

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What does the ungrounding (red/black) conductor do?

Supply voltage and carry current

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What does the grounded (white) conductor do?

Allows current to return to its source

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What does the grounding (green/bare) conductor do?

Grounds and bonds the system

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What does the term grounding mean?

Connects electricity back to earth

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What does the term bonding mean?

Connects the non-current-carrying parts of electrical equipment to the service equipment

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What are fish tapes used for?

Pulling a conductor through a raceway

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Most common type of ladder?

Stepladder

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What is the point of extension ladders?

Allows you to get higher up

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Do you have to tie extension ladders down?

Yes

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What is the ratio that you’re supposed to have extension ladders at?

4:1

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What are ladders typically made of?

Fiberglass

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What are hydraulic knock out sets used for?

knock out big holes in boxes

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What is a steel stud punch used for?

Punching holes in steel studs

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What do we use a pie knife for?

Cutting large cables

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What is an SDS hammer drill used for?

Drilling holes in tile/concrete

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1/2” drill vs hammer drill

Reg. hammer drill is longer than reg. drill

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Masonary bits

Dull tip, don't have indents

Core drill

Cuts clean and large holes in concrete

Angle drill

Allows you to get into small spots/angles

Hole hog

Puts holes in wood (lots of torque)

Long tom

Allows you to drill holes in wood without having to use ladder

Keyed chuck

Used on high torque drills

Keyless chuck

Used on less torque drills

Auger bits

Put holes in wood (most common)

Spade bit

Cut wood

Chipper bits

Put larger holes in wood

Hole Saw

Puts holes in materials (wood, plastic, steel)

High speed drill bits

Sharp tip. Used on wood, metal, plastic

Unibit

Enlarges holes

Magnetic bit holders

Allows the screw to stay in place with no one holding it

what does a portaband do?

Cuts steel

What is sawsall?

used to cut wood studs

arc flash/blast?

caused by short circuits/ground faults

how hot do arc blasts get?

hotter than sun

ppe on jobsites

hardhat, boots, vest, safety glasses, gloves

what is overcurrent protection device?

breaker and a fuse

mark metalic boxes?

to the center

mark nonmetalic boxes?

to the top

nm code artice?

334

hole to cut if you want a 1/2" hole?

7/8" hole

hole to cut if you want a 3/4" hole?

1 1/8" hole

3 types of conductors

aluminum, copper, copper-clad aluminum

whats a feeder cable?

starts on one overcurrent device and ends on another overcurrent device

what is a branch circuit?

starts on an overcurrent device and goes out to the devices in our homes

purpose of mudring?

when connecting metal box to wood stud

vapor box use

use on exterior/attic walls to prevent condensation

gfci protects?

shock and electrocutions

afci protects?

fires

how to strengthen concrete?

rebar

lowest point of a house?

footing

what beam dont you drill into

lvl beam

sheet rock on wall thickness?

1/2"

sheet rock on celing thickness?

5/8"

size of device screws?

6 32

size of light screws?

8 32

point of lvl beams?

transfer weight onto load bearing beams

in a recepticle, what screw does the white (neutral) wire go to?

silver

in a recepticle, what screw does the black (hot) wire go to?

brass

in a recepticle, what screw does the bare (ground) wire go to?

green

in a recepticle, what is the connecting tab?

connects top and bottom recepticle

backwiring outlets?

stab into back of outlet

side wire outlets?

connect to screws

stab-in outlets?

stab into side

only way stranded wire is approved in an outlet?

backwiring

2 listing companies?

UL and CSA

who enforces nec requirements?

electrical inspector

what do testing labs do?

List products (DONT APPROVE)

what federal organization dictates safety?

OSHA

what to do when working on electrical circuits?

lock out, tag out

NFPA standard that covers safety?

Document 70e

2 responsibilities of osha

provide ppe and train employees

2 responsibilities of employee

use ppe and follow safety rules

what does aff stand for?

above finish floor