This document discusses arc flash safety and electrical hazards. It notes that arc flashes are a serious risk and can cause burns, fires, and even death. An arc flash occurs when an electrical discharge travels through the air, releasing intense heat up to 5,000°F. The document recommends conducting an arc flash hazard analysis to determine appropriate personal protective equipment and safe working distances according to the voltage level. It also identifies some common causes of arc flashes such as overloading circuits, damaged equipment, and improper wiring. Following lockout/tagout procedures and wearing proper PPE rated for the voltage and distance is key to avoiding arc flash injuries when working on energized electrical equipment.
An arc blast or flash can occur when workers service electrical power, transmission, and distribution systems using high voltage. It is important to understand the OSHA, NFPA, IEEE and NEC requirements as well as the hierarchy of controls to reduce the risk. Understanding how to calculate a flash analysis to determine the protection boundaries, train workers on the hazards of high voltage electricity and use of personal protective equipment and clothing, and using the right tools for the job are all important steps. Learn more about arc blast/flash in this presentation. If you need advice or help with electrical safety, contact our staff of CSPs at The Windsor Consulting Group, Inc. We have past performance working with contractors near powerlines and underground utilities.
this is basic electrical safety power point lecture that too useful for principal training non-electrical workersprevent lectrocution accidents in work place
Checkout OSHA's workplace electrical safety guidelines that both employee and employer should be aware of. Make your facility safer with Current Solutions PC's workplace electrical safety program that protects your facility and employees against all sorts of electrical hazards. Visit www.CurrentSolutionsPC.com now.
Electrical safety and Arc Flash TrainingLarry Riley
This presentation is part of the OSHA Focus Four training that I do in all my Construction courses. More information you can contact me: Larry@asctraininginc.net
How to work safely while working with electricity or electrical equipment. what are the safety rules to be followed? what is the safe system of work while working on electrical equipment. what kind of safety components to be used in place?
This training session covers electrical safety for unqualified workers. “Unqualified” workers are those such as machine operators, operators of powered industrial trucks, construction workers, and others who are not qualified to perform electrical work, but who need to know important information about the hazards of electricity and how to prevent serious injury.
For workers who are authorized to work on or near energized electrical equipment and wiring, additional training is required.
Regards, Mr. SYED HAIDER ABBAS
MOB. +92-300-2893683 MBA in progress,NEBOSH IGC, IOSH, HSRLI, NBCS,GI,FST,FOHSW,ISO 9001, 14001,
'BS OHSAS 18001, SAI 8000, Qualified .
This training presentation covers the basic on arc flash and other electrical hazards, including the effects of an arc flash incident and how to determine shock and flash protection boundaries for a safe workplace
An arc blast or flash can occur when workers service electrical power, transmission, and distribution systems using high voltage. It is important to understand the OSHA, NFPA, IEEE and NEC requirements as well as the hierarchy of controls to reduce the risk. Understanding how to calculate a flash analysis to determine the protection boundaries, train workers on the hazards of high voltage electricity and use of personal protective equipment and clothing, and using the right tools for the job are all important steps. Learn more about arc blast/flash in this presentation. If you need advice or help with electrical safety, contact our staff of CSPs at The Windsor Consulting Group, Inc. We have past performance working with contractors near powerlines and underground utilities.
this is basic electrical safety power point lecture that too useful for principal training non-electrical workersprevent lectrocution accidents in work place
Checkout OSHA's workplace electrical safety guidelines that both employee and employer should be aware of. Make your facility safer with Current Solutions PC's workplace electrical safety program that protects your facility and employees against all sorts of electrical hazards. Visit www.CurrentSolutionsPC.com now.
Electrical safety and Arc Flash TrainingLarry Riley
This presentation is part of the OSHA Focus Four training that I do in all my Construction courses. More information you can contact me: Larry@asctraininginc.net
How to work safely while working with electricity or electrical equipment. what are the safety rules to be followed? what is the safe system of work while working on electrical equipment. what kind of safety components to be used in place?
This training session covers electrical safety for unqualified workers. “Unqualified” workers are those such as machine operators, operators of powered industrial trucks, construction workers, and others who are not qualified to perform electrical work, but who need to know important information about the hazards of electricity and how to prevent serious injury.
For workers who are authorized to work on or near energized electrical equipment and wiring, additional training is required.
Regards, Mr. SYED HAIDER ABBAS
MOB. +92-300-2893683 MBA in progress,NEBOSH IGC, IOSH, HSRLI, NBCS,GI,FST,FOHSW,ISO 9001, 14001,
'BS OHSAS 18001, SAI 8000, Qualified .
This training presentation covers the basic on arc flash and other electrical hazards, including the effects of an arc flash incident and how to determine shock and flash protection boundaries for a safe workplace
The electrical arc creates a pressure wave. The incident energy is the energy of this arc-flash coming into contact with a surface. Essentially an electric arc creates a radiation burn which accounts for the internal burns a person can receive when exposed to an electrical arc flash.
Electrical Engineers for Dummies | What You Need To Know In 15 SlidesOwlGuru.com
Find out what the job of an Electrical Engineer is like. What they do, how much they make, how to become one, pros and cons and should I be one. All of this in 15 slides.
Five to 10 arc flash explosions occur in electric equipment every day in the United States. This number does not include cases in which the victim is sent to an ordinary hospital. Instead, these incidents are so severe the victims require treatment from a special burn center.
What is arc flash? What are the legal requirements? What are the arc flash standards required in industry? Premium Power, an electrical engineering consultancy offers a checklist of what needs to be considered before carrying out work on or near live equipment
Personal Brand Statement:
As an Army veteran dedicated to lifelong learning, I bring a disciplined, strategic mindset to my pursuits. I am constantly expanding my knowledge to innovate and lead effectively. My journey is driven by a commitment to excellence, and to make a meaningful impact in the world.
Improving profitability for small businessBen Wann
In this comprehensive presentation, we will explore strategies and practical tips for enhancing profitability in small businesses. Tailored to meet the unique challenges faced by small enterprises, this session covers various aspects that directly impact the bottom line. Attendees will learn how to optimize operational efficiency, manage expenses, and increase revenue through innovative marketing and customer engagement techniques.
Kseniya Leshchenko: Shared development support service model as the way to ma...Lviv Startup Club
Kseniya Leshchenko: Shared development support service model as the way to make small projects with small budgets profitable for the company (UA)
Kyiv PMDay 2024 Summer
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Discover the innovative and creative projects that highlight my journey throu...dylandmeas
Discover the innovative and creative projects that highlight my journey through Full Sail University. Below, you’ll find a collection of my work showcasing my skills and expertise in digital marketing, event planning, and media production.
LA HUG - Video Testimonials with Chynna Morgan - June 2024Lital Barkan
Have you ever heard that user-generated content or video testimonials can take your brand to the next level? We will explore how you can effectively use video testimonials to leverage and boost your sales, content strategy, and increase your CRM data.🤯
We will dig deeper into:
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3. How you can capture more CRM data to understand your audience better through video testimonials. 📊
Recruiting in the Digital Age: A Social Media MasterclassLuanWise
In this masterclass, presented at the Global HR Summit on 5th June 2024, Luan Wise explored the essential features of social media platforms that support talent acquisition, including LinkedIn, Facebook, Instagram, X (formerly Twitter) and TikTok.
Premium MEAN Stack Development Solutions for Modern BusinessesSynapseIndia
Stay ahead of the curve with our premium MEAN Stack Development Solutions. Our expert developers utilize MongoDB, Express.js, AngularJS, and Node.js to create modern and responsive web applications. Trust us for cutting-edge solutions that drive your business growth and success.
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"𝑩𝑬𝑮𝑼𝑵 𝑾𝑰𝑻𝑯 𝑻𝑱 𝑰𝑺 𝑯𝑨𝑳𝑭 𝑫𝑶𝑵𝑬"
𝐓𝐉 𝐂𝐨𝐦𝐬 (𝐓𝐉 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬) is a professional event agency that includes experts in the event-organizing market in Vietnam, Korea, and ASEAN countries. We provide unlimited types of events from Music concerts, Fan meetings, and Culture festivals to Corporate events, Internal company events, Golf tournaments, MICE events, and Exhibitions.
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"𝐄𝐯𝐞𝐫𝐲 𝐞𝐯𝐞𝐧𝐭 𝐢𝐬 𝐚 𝐬𝐭𝐨𝐫𝐲, 𝐚 𝐬𝐩𝐞𝐜𝐢𝐚𝐥 𝐣𝐨𝐮𝐫𝐧𝐞𝐲. 𝐖𝐞 𝐚𝐥𝐰𝐚𝐲𝐬 𝐛𝐞𝐥𝐢𝐞𝐯𝐞 𝐭𝐡𝐚𝐭 𝐬𝐡𝐨𝐫𝐭𝐥𝐲 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥 𝐛𝐞 𝐚 𝐩𝐚𝐫𝐭 𝐨𝐟 𝐨𝐮𝐫 𝐬𝐭𝐨𝐫𝐢𝐞𝐬."
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Auditing study material for b.com final year students
Arc Flash Safety Training by Pennsylvania Department of Labor and Indusry
1. ARC FLASH SAFETY
Bureau of Workers’ Comp
PA Training for Health & Safety
(PATHS)
29 CFR 1910.303
29 CFR 1910.305
29 CFR 1926.400-449,Subpart K
NFPA 70E
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2. OSHA Cited Violations: FY 2010
OSHA has long understood the importance of safety
in this area and tracks electrical violations
OSHA Most Cited Violations (2010)
• Electrical-General Requirements (1910.303): 2,770
• Lock-out/Tag-out (1910.147): 3,531
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5. Electrical Hazards
• Shock
• Electrocution: 4th
leading cause of
industrial fatalities
• Fires
• Burns
• Arc Flash
• Arc Blast
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6. Arc Flash Defined
• Electrical work may cause injury or death
• One severe occurrence is the Arc Flash event
“Arc Flash: an electrical discharge that uses the air
as a conductor, exploding from a high voltage
source to another conductor or ground nearby. The
release can be 5,000oF or hotter, melting nearby
metals and damaging the electric circuits involved.
The brightness, heat and force of the arc flash can
cause damage to the human body.”
Tyler Lacoma, eHow Contributor, http://www.ehow.com/about_5110071_definition-arc-flash.html
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8. Arc Flash Hazards
Statistics:*
5 to 10 such serious arc flashes a day occur in
the United States
Result: 1 to 2 fatalities
Although protective clothing exists, there is no
guarantee against such severe energy releases
*Dr. Mary Capelli-Schellpfeffer, “Arc Flash Presentation,” as quoted in eHow.com facts, May 30, 2012
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9. Causes of Arc Flash
• Overloading/overheating
of circuits
• Damaged circuit breakers
• Over-fusing
• Wiring in a non workman
-like manner
• Faulty electrical panels
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10. Causes of Arc Flash
• System overload
• Incorrect wire gauge for
system requirements
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11. Causes of Arc Flash
Faulty panels or
overloading panels
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12. Arc Blast
• Accompanies the flash
• Intense radiant heat
released
• Nearby surfaces
(persons and objects)
absorb and are
instantly heated to
vaporizing temperatures
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14. Electrical System Susceptibility
System
Hazard
Less then 120V
Arc flash highly improbable
480V electrical
services
Sufficient capacity to cause
Above 600V
Medium-voltage with higher
energy/potential for an arc
flash event
http://en.wikipedia.org/wiki/Arc_flash
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15. Arc Flash Energy Released
Per Wikipedia
Example: single phase-to-phase fault on 480V
system with 20,000 amps of fault current
Resulting power is 9.6 MW
If fault lasts 10 cycles at 60Hz, resulting energy
would be 1.6 megajoules
Comparison: TNT releases 2,175 J/g or more when
detonated. This fault is equal to 380 grams (about
0.8 pounds) of TNT !!!
http://en.wikipedia.org/wiki/Arc_flash
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17. Current/Reaction Chart
Current
Below 1 milliampere
1 milliampere
5 milliampere
6-25 milliamperes
(women)
9-30 milliamperes
50-150 milliamperes
1,000-4,300
milliamperes
10,000 milliamperes
Reaction
Generally not perceptible.
Faint tingle.
Slight shock. Not painful-disturbing. Average
person can let go. Strong involuntary reactions
can lead to other injuries.
Painful shock. Loss of muscular control.
Freezing current (“let-go” range). Person can not
let go but can be thrown from the current if
extensor muscles are stimulated.
Extreme pain, respiratory arrest, severe muscular
contractions. Death is possible
Rhythmic pumping action of heart ceases. Muscular
contraction and nerve damage occur; death likely.
Cardiac arrest, severe burns; death probable.
OSHA Training Institute, “Construction Focus Four: Electrocution Hazards,” April, 2011
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18. Need for an Arc Flash Study
• Numerous inherent
dangers when working
around electrical
systems
• Safety from arc flash
should include an Arc
Flash Study
• Done prior to
conducting work on
hazardous locations
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19. Arc Flash Study
Study components per IEEE 1584:
Data Collection (steps 1 & 2)
System diagrams
Modes of operation scenarios
Analysis (steps 3-7)
Determination of bolted fault currents
Protective devices recommended
Document system voltages & classes of equipment
Determine working distance from arc flash source
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20. Arc Flash Study
Arc Flash Hazard Analysis (Steps 8 & 9)
Incident energy determination
(Energy needed for an arc flash to cause
second-degree burns)
Flash protection boundaries
(Distance where the second-degree burns
are caused, or where the incident energy is
1.2
calories per centimeter squared or 1.2
cal/cm2)
Both may be calculated using NFPA or IEEE equations
Diane Bonder, eHow Contributor
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21. Aids to Safe Operations
• NFPA 70E-2004 Standard
for Electrical Safety
Requirements for
Employee Workplaces
• IEEE 1584 Guide for Arc
Flash Hazard Calculations
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22. Arc Flash Hazard Analysis
Results aid in determining:
Proper PPE, distancedependent from possible
threat:
- Shirts
- Pants
- Underwear
- Goggles
- Gloves
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Hard hats
Shields, face and neck
Heating protection
Shoes
22
23. Safe Distance Calculations
Used to determine safe distances and PPE
Variables taken into account:
• Voltage
• Working distance
• Clearing time
• Grounding
• Gap between conductors
• Bolted fault current
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24. Arc Flash Boundaries
“Distance from an arc
flash within which an
unprotected person has
a 50% chance of
receiving a second
degree burn”
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25. Flash Protection Boundary
Arc flash hazard is based
on:
• Fault current
• Arcing time
• Distance
Preplanning your facility
will enhance the safety
of your staff
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26. PPE Based on Incident Energy Preplan
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27. PPE by Hazard Risk Category
Findings compared to
table which indicates arc
thermal performance of
clothing
Dangers above a 4 is
prohibited
“No Safe PPE Exists
Energized Work
Prohibited”
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28. Definitions
• Voltage (E): electromotive force (emf) that
forces electrons to flow through a circuit
measured in Volts (V)
• Current (I): the number of electrons that flow
past a point in a circuit in one second measured
in Amperes or Amps (A)
• Resistance (R): the opposition to current flow
in a circuit that contains only resistance and is
measured in ohms
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29. Ohm’s Law
• Relationship between E, I, R
• “One volt of electromotive force will force one
ampere of current to flow through one ohm of
resistance”
E
I
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R
By knowing
2 of these
variables, the
other can be
calculated!
29
30. Power Formula
• Power: the rate at which
work is done and is
measured in Watts (W)
(E x I)=Watts
• So Power is equal to
P= E x I
• Power can be measured in
the thousands of watts per
hour and reads as KWH or
kilowatthours
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31. Horsepower and Watts
• Horsepower is the unit of
measure for mechanical
energy
• 746 Watts = 1 Horsepower
(hp) or P = E x I
• Flow of Amps= E/R
• Additional information
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32. Qualified Person
• Qualified Person: One who has received training
in and has demonstrated skills and knowledge in
the construction and operation of electric
equipment and installations and the hazards
involved
• OSHA defines these as specially trained to work
on live electrical equipment
• Unqualified Person: per 1910.332(b)(2) must still
be trained in safe electrical practices for their
support jobs (painters, cleaners as examples)
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33. Types of Damage
Fully understand the
hazards related to
these activities
If possible, review
case histories of your
industry to devise
safe operations
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36. Hazard Preplan
• Use checklists to
preplan equipment
needs when
performing service or
maintenance
• Label systems for
future maintenance
and arc flash studies
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37. Safety Precautions: PPE
• PPE should fit the
requirements of
the job
• Specific level of
PPE is required
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38. PPE
Tests for arc rating of PPE
Found in ASTM F1506
“Standard Performance
Specifications for Flame
Resistant Textile
Materials for Wearing
Apparel for Use by
Electrical Workers
Exposed to Momentary
Electric Arc and Related
Thermal Hazards”
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39. Match PPE to Task
Level 2 Protective
Coverall
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41. Match PPE to Task
Prepare for the possible!
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42. Tools
• Support equipment
rated for the task
• Tools properly
insulated
• Correct support
equipment for the
job
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43. Safety
Robotic removal or
disengagement devices can
do much to maximize
personnel safety
Also:
• Draw-out circuit
breakers on a life bus
• Remote racking
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45. Avoiding Arc Flash
Assign qualified person
• Conduct system analysis to
determine arc flash hazard
• When working, secure all
power and enact Lockout/Tag-out
• Proper tools and PPE rated
for the job
• Assign electrical safety
program manager familiar
with codes
• Properly maintain system
and components
• Apply warning labels
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46. Some Questions OSHA will Ask
From EHSToday, March 13, 2008 (and still timely),
Kenneth Cybart:
OSHA’s goal: for employers to identify all electrical
hazards, potential and actual
Analyze workplace for shock and arc flash hazards, set
safe protection boundaries and define required PPE
Circuit or equipment description at job location?
Written description, drawing
Detailed job description of work?
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47. Some Questions OSHA will Ask
Can the fact that the equipment cannot be deenergized or job be deferred be justified?
1910.333(a)(1) Live parts must be de-energized
before employee works on/near them
Less than 50 volts to ground need not be deenergized if there will be no increased exposure to
electrical burns or to explosion due to electric arcs
However, never work on live circuits unless
absolutely necessary
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48. Some Questions OSHA will Ask
Live circuit work necessary?
OSHA 1910.33(a)(2): Safety-related work
practices required
NFPA 70E Article 110.8(B)(1): Electrical Hazard
Analysis required before work performed on live
equipment operating at 50 volts and higher
Other questions to ask:
- Safe work procedures?
Detailed work procedure established? Will it be
used?
Job briefing checklist performed?
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49. Some Questions OSHA will Ask
Was job briefing given to those doing the job?
Proper management approval obtained?
NFPA 70E annexes to assist your program:
Annex
E
F
I
J
Topic
Electrical Safety Programs
Hazard Risk Evaluation Procedures
Job Briefing Checklists
Energized Work Permits
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50. Some Questions OSHA will Ask
Electrical safety analyses performed?
Arc flash hazard analysis performed?
Flash protection boundaries established?
Other potential electrical hazards identified?
Proper insulated tools and equipment used?
Necessary PPE determined?
Insulated blankets/sheeting used to cover all live
parts?
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51. Some Questions OSHA will Ask
OSHA: Every employer shall furnish a place of
employment free from recognized hazards…causing
or likely to cause death or serious physical harm…
NFPA 70E: Employers to conduct an electrical
hazard assessment to include a hazard analysis for
shock and arc flash before performing work on live
equipment operating at 50 volts and higher
Review the following when creating your program:
OSHA 1910.132 and 1910.333(a)(1)(i) as well as
1910.269(a)(2)(iii)
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52. Summary
• Appreciate the severe consequences which are
possible when working with electrical systems
• Fully plan the job; know and enact safeguards
• Match the required PPE and equipment
to the task
• Consider possible emergency response needs for
yourself and your team and include in your plan
• Conduct the job safely
• Restore safely
• GET HOME SAFELY!!!
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53. Bibliography
http://en.wikipedia.org/wiki/Arc_flash
Tyler Lacoma, eHow Contributor,
http://www.ehow.com/about_5110071_definition-arcflash.html
Dr. Mary Capelli-Schellpfeffer, “Arc Flash
Presentation,” as quoted in eHow.com facts, May
30, 2012
Diane Bonder, eHow Contributor
OSHA Training Institute, “Construction Focus Four:
Electrocution Hazards,” April, 2011
http://ehstoday.com/construction/ehs_imp_79112
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