OSHA focus four electrocution hazard

Question 1

What 4 types of hazards result in 90 % of work deaths

Answer 1

falls
caught in-or-between
struck-by
Electrocution

Question 2

What are the leading types of electrocution hazards

Answer 2

overhead power lines

machinery and appliances

electrical equipment

energized objects

Question 3

What voltage accounts for the most injuries at the work place and at home

Answer 3

> 600
Volts

Question 4

what is considered low voltage

Answer 4

any system less then 600 V

Question 5

dry, clean unbroken skin has a resistance of

Answer 5

100,000

Question 6

wet or broken skin has a resistance of

Answer 6

1,000 ohms

Question 7

how much higher is the current through wet skin then the current through dry skin

Answer 7

100x

Question 8

what is the resistance of internal body fluids

Answer 8

300 ohms

Question 9

What happens when current passes through the heart

Answer 9

ventricular fibrillation

Question 10

what does ventricular fibrillation do

Answer 10

it causes the heart to stop pumping blood through the body

Question 11

what is the lowest current that can cause death

Answer 11

0.05ampers or 50 milliamps

Question 12

What current are most home breakers rated to trip

Answer 12

15 amps

Question 13

what is the relationship between wire gauge, size and ampacity

Answer 13

the lower the gauge the larger the wire and the more current it can contain

Question 14

are multiple cords allowed for fixed equipment

Answer 14

no

Question 15

what are the 6 main electrical hazard categories
(they form the acronym besafe)

Answer 15

burn
electrocution
shock
arc flash
fire
explosion

Question 16

what are the three type of electrical burns

Answer 16

electrical

arc/flash

thermal contact

Question 17

how shock defined

Answer 17

the reflex response to the passage of electric current

Question 18

how high can an arch flash be

Answer 18

35000

Question 19

Should GFCI be used for all power tools

Answer 19

yes

Question 20

what construction activity causes the most electrocution

Answer 20

excavation

Question 21

when should underground locate services be used

Answer 21

24 inches either way where the buried services are

Question 22

OSHA requires two programs for construction using temporary power

Answer 22

GFCI

AEG

Question 23

where can min clearance distances for working near power lines be found

Answer 23

OSHA regulations

Question 24

What ate three types of GFCI

Answer 24

receptacle

temporary or portable

circuit breaker GFCI

Question 25

what does conductor sized 14/3 mean

Answer 25

it is gauge 14 and has 3 wires

Question 26

should ladders be non-conductive

Answer 26

yes

Question 27

what does lock out tag out do

Answer 27

prevents contact with operating equipment parts lock out- use locks to prevent unwanted electrical equipment activation tagout- practice of using tags with locks to increase visibility and awareness that the lock is protecting someone's life

Question 28

Authorized tagout person

Answer 28

some one who is incharge of lock out tag out

Question 29

affect person

Answer 29

some one who operates on the equipment that is locked out tagged out

Question 30

what is important to do to capacitors when locking out

Answer 30

deplete any stored energy

Question 31

what are the 5 major causes of lockout/tagout injuries

Answer 31

accidental restarting failure to release residual energy failure to disconnect from power source failure to clear work area failure to stop equipment

Question 32

are wires less then 3-wire dangerous

Answer 32

yes

Question 33

cord should always be what when they can

Answer 33

overhead and able to be seen clearly

Question 34

how often should you test GFCI's

Answer 34

monthly

Question 35

what type of fire extinguisher should you never use

Answer 35

a type a

Question 36

how will foot ware for electrical workers be marked

Answer 36

EH

Question 37

fuses are meant as protection for

Answer 37

equipment

Question 38

what type of helmet is required for electrical work

Answer 38

class E helmets

Question 39

can employers deenergize power lines

Answer 39

yes as long as they work with the electric company

Question 40

should metal covers for electrical equipment be grouded

Answer 40

yes

Question 41

what does ARGCP represent and who runs it

Answer 41

Assured Equipment grounding conductor program OSHA

Question 42

OSHA requires flexible cord to rated for

Answer 42

hard and extra hard usage

Question 43

why should extension cords be 3 wire type

Answer 43

so that they can be grounded

Question 44

How does OSHA define ectrocution

Answer 44

death by electricity