The ________ keeps the electricity on its intended path through the conductor. c.40,000 volts 0000000816 00000 n _.9u'2G_0 Ue]e"x5|Y Use only equipment that is approved to meet OSHA standards. 0000009628 00000 n Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Outlets 2.Grounding Match the length from job to outlet. You need to evaluate the situation you are in and assess your . The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. 1.Extension cords 2. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. An examination revealed that the spring, cover plate, and part of the melamine casing were missing from the face of the female connector (the spring and some melamine fragments were found at the accident site). To be safe, you must think about your job and plan for hazards. 1.Clench The NEC C. Suggestions Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 0000028595 00000 n b.Ground Fault Critical Interrupter Select the correct answer and then click DONE. Using the wrong light bulb wattage; Overloading power strips and outlets; Unprotected electrical outlets; Poor wiring; Defective electrical wires 0000013999 00000 n Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Quiz Question 9: Conductor insulation must be approved for the ___________ of use? Work performed on an electrical system within reaching distance of energized components is_____work. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [29 CFR 1926.404(f)(7)(v)]: Frames and tracks of electrically operated cranes. Is not broken, Question Text: Electrical tools should be grounded with a(n)________. [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current. 5. c. No, because the electricity is needed on a long-term basis. 30 days B. Electricity to the auger was supplied by a series of 50-foot extension cords running to an adjacent property. What was Latoya's first mistake? When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. d.Constructive objects, Select all answers that apply to the following statement and then click DONE. Improper Use of Extension and Flexible Cords. Lx*jWP# /c2)|]NXqAx>=~'[ Which one of these methods MOST effectively protects machines, tools, and operators against damage from electrical current? Gloves used for electrical work must be inspected and tested prior to use, and be certified every: A. 0000005632 00000 n a.Two-prong plug b.Yes, as it would be too expensive to install more permanent wiring and receptacles. There were no eyewitnesses to the accident, but evidence suggests that while the victim was handling the damaged and energized extension cord, he provided a "path to ground" and was electrocuted. he most common shock-related injuries are: 0000005406 00000 n Quiz Question 3: Power cords can be damaged by which of the following? -Wood. When an electric shock occurs, your muscles may: One hand drill was not grounded, and the other had no safety plate. b. Deductive objects 4.Running through doorways. Examples of Equipment That Can Contact Power Lines. The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). A co-worker disconnected the power cord to the saw, too late to save the victim. . The contact lasts for 5 seconds before someone is able to shut off the power. The following hazards are the most frequent causes of electrical injuries Contact with Power Lines, Lack of Ground-fault Protection, Path to Ground Missing or Discontinuous, Equipment Not Used in Manner Prescribed, and Improper Use of Extension and Flexible Cords. Adapter For 3-Prong Cord Not Grounded To Outlet: On May 27, 1986, two workers were using a 110-volt auger to install tie-down rods for a manufactured home. Should Ajay use a GFCI? b.Shut off power within five minutes of the imbalance On the day of the incident, the victim plugged in a damaged extension cord and laid it out towards the bulkhead. What is the minimum clearance distance you must maintain from the power lines? b. 2.Loose screws Draw a line from the item on the left that corresponds to the match on the right. Use non-conductive wood or fiberglass ladders when working near power lines. Since the outlet at the adjacent property had no socket for a ground prong, the extension cords were plugged into the outlet using an adapter, but the ground wire of the adapter was not grounded. True. Find the energy required to raise an electron from the n=4n=4n=4 state to the n=5n=5n=5 state in Li2+\mathrm{Li}^{2+}Li2+ and in hydrogen atom. 2 0 obj c) Age SCENARIO: You encounter a co-worker on a residential remodeling job. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: !DP#vr-\DM<6V-2'I5l6)Z@^m=}c3-aUOo6rr V-Y3d6HABmjD $TQCvK*eg&|Y596#H\ 0000013716 00000 n Question 1: Each year, approximately __________ workers suffer from electricity related injuries. Damaged Extension Cord Leaves Arc Welder Ungrounded: A 29-year-old welder attempted to connect a portable arc welder to an electrical outlet using an extension cord. 0000018681 00000 n Short In Power Saw/Ungrounded Temporary Power Supply: On July 10, 1986, a 22-year-old carpenter was working at the construction site of large apartment complex, using a portable electric saw to construct the wooden framework of a laundry building. Which of the following injuries can occur when muscles flex or twitch from an electrical shock? Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. Select the correct answer and then click DONE. 15,000 milliamps (15 amps) Lowest overcurrent at which a typical fuse or circuit breaker opens a circuit! The auger then fell across the other worker, the 24-year-old victim. 4. 0000420887 00000 n d.Water, Other electrical hazards in the workplace include: 3.The length of time the body is in contact with electricity Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. 0000015549 00000 n 0000110659 00000 n Carly needs to use an extension cord with her corded nail gun. 0000007464 00000 n 4.Cardiac arrest 0000017336 00000 n Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. 1,[-c|"&u[Fu>wjte8j:xRk )"m_!6awT J,byp?fRBf?p|b3/Um\7"|+@5vvWAa5J^y*q,l b)Ftt4 :4,-J`! When the victim reached down to connect the choker to the hoist cable, he suddenly collapsed. c.911 Regarding hand protection employers should: A. DHPP0MHLHIPPXc f2LXL"dgJ:@ ys`llr-shH,Y@Z 23J0a_TXD;X,;&0i,i&f&T8h R/ v`,l. 440!2D9482q={LPXs +( endstream endobj 129 0 obj <> endobj 130 0 obj <> endobj 131 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 132 0 obj <> endobj 133 0 obj <> endobj 134 0 obj <> endobj 135 0 obj <>stream Which of the following are insulators of electricity? 12 months C. 6 months D. Never Q23. 0000002479 00000 n Question 2: Which of the following are ways employers must protect their employees on the workplace? c. Extend the reach of the power tool. 0000004686 00000 n When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of: b) Staples Question 3: If following lock out/tag out procedures, what step should be taken BEFORE you shut down the equipment? 0000089142 00000 n Suppose you could convert the 525525525 Calories in the cheeseburger you ate for lunch into mechanical energy with 100%100 \%100% efficiency and you throw a 0.145kg0.145~\mathrm{kg}0.145kg baseball with the energy contained in the cheeseburger. What is the most common, non-fatal, electrical shock-related injury? Does the fall qualify as an electrical accident? Select the correct answer and then click DONE. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. and more. 0000003413 00000 n 2.The person's physical condition (3,2,1), (5,4,3). B. outdoors. A. wrap tape around the damaged spot to prevent electrical shocks. Look for overhead power lines and buried power line indicators. The first worker knocked the auger off the victim, but saw that the electric cord was wrapped around the victim's thigh. 0000001731 00000 n 0000414648 00000 n Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. The individual's perspiration-soaked clothing/body contacted bare exposed conductors on one of the cords, causing an electrocution. 0000068035 00000 n Question 3: A/an ____________ is a unit of measurement for electrical resistance. The victim provided a path to ground and was electrocuted. Additional minimum clearance distance is required for power lines carrying over ________. <>>> 4 0 obj a.Yes, because the electrical shock caused the fall. -Grounding= a conductive connection to the earth which acts as a protective measure. Electricity for power tools was supplied from an exterior 120-volt, grounded AC receptacle located at the back of the residence. d. No, because an extension cord would not provide enough power. a.Extension cords If a defective power tool gives you an electric shock, how might your muscles react? 3.ack of ground fault protection. s\A0W+ 0000010603 00000 n The insulation on the extension cord was cut through and exposed bare, energized conductors which made contact with the ladder. As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. What three things must be present for a current to flow through a conductor. Get resources on specific hazards and their control, including identification, risk assessment and inspections, to keep your workplace healthy and safe. The small electrical current enters his body through his left leg. Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. The presence of ______ can turn you, your equipment, or insulators like wood, into conductors. c.Guaranteed Fault Circuit Interrupter Safe operation of hand and portable powered tools and other hand-held equipment. 0000022637 00000 n The driver stopped the truck under the power line, and the victim, not realizing that the truck had moved, swung the boom to position the bucket behind the truck. (A) Shotgun sticks. a.Electricity As the victim climbed down a makeshift ladder, he shifted the saw from his right hand to his left, and was shocked. . 3 0 obj 0000021516 00000 n c. Match the color of the tool to the color of the extension cord. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. Frames of non-electrically driven elevator cars to which electric conductors are attached. d. 20 feet. If the power supply to the electrical equipment at your site is not grounded or the path has been broken, fault current may travel through a worker's body, causing electrical burns or death. 4.Circuit breakers, When inspecting power tools, look for: You discover the electrical cord on a drill has been damaged and some of the cord's insulation is missing. 0000003715 00000 n (B) Switch sticks. You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. 1.Missing or broken path to ground. endobj How might this event affect the ability of animals to obtain energy to live? Which group would be more accurate when used in an accelerating spaceship? =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR Extension cords are used to: 3. 3.When you are using portable power tools Co-workers provided CPR, but were unable to revive the victim. 1452 0 obj <> endobj Using modified cords or tools, e.g., removing ground prongs, face plates, insulation, etc. a.311 (E) a, b, and c. 2. Electricity will form a "path" or "loop". Provides information about the hazards that electrical workers may experience as a part of their jobs. [. How fast would the ball be moving at the moment of release? 0000004208 00000 n endobj Ground all power supply systems, electrical circuits, and electrical equipment. -Falls. x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8] }C.Se={o7H[w@/^j BgXRC/O/eiLHiN\4~7x=^J@|]zu"x]lQ-+.xF=oY +B?jSl|(agF_].+UH\!/;AU .cG!h@42 iqnkZtdc#^)AX96(wFZ,RP{[\j\aJgc) diV;BNzZge(}=0Pj Qp@"]yOnNw89 Study with Quizlet and memorize flashcards containing terms like OSHA's electrical standards are based on: A. ANSI standards B. Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. Select the correct answer and then click DONE. Examples Of Electrical Hazards. When current travels through your body - Definition of electric shock. -Glass. c.A measurement of electricity Others, such as office workers and sales people, work with electricity indirectly and may also be exposed to electrical hazards. 4. When current travels through your body - Definition of electric shock, Choose the primary cause of an electric shock, Electric shock is caused when current travels through the body, the exits the ground. Quiz Question 7: Which is not an insulator? b.A fast-acting switch monitoring current flow How will she choose the correct cord? 10,000 milliamps (10 amps) Cardiac arrest and severe burns occur. NFPA 70E defines those special circumstances and sets rigid electrical safety limits on voltage exposures, work zone boundary requirements and necessary personal protective equipment (PPE). Quiz Question 4: Which is a preventive measure to prevent hazards while working with power lines? Extension cords had poor splices, no grounds, and reversed polarity. 0000005716 00000 n Electricity becomes hazardous when it takes an unintended path to complete the ________. Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. De-energize and ground lines when working near them. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ -If current passes through the body near the heart or brain. a.Ground Fault Circuit Insulator Used across walkways. Remove from service any equipment with frayed cords, missing ground prongs, cracked tool casings, etc. In which of the following workplace situations are you at risk for coming into contact with live electrical . Bob is asked to repair some overhead wiring, requiring the use a ladder. -Conductor= permits the free flow of electricity. 0000002403 00000 n 1.Is firmly connected 0000001604 00000 n He plans to use it over a period of at least six months. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. 0000001495 00000 n Check your employee's electrical safety knowledge through an electrical safety quiz. 0000003640 00000 n b.Yes, because Bob was on . hb``b``=p0X8n0lY0L#rK[V26h* @0H!XDl+!&FfUfo`h6l <>>> 2.Is working properly Which of the following part of you body can burn if you come in contact with electricity? %PDF-1.5 xYmo -ER/&@[D,_! 1. Computers The power switch on the welder was already in the "on" position, and the female end of the extension cord, which was spring loaded, had apparently been dropped and broken. -Rubber. A fan connected to a 120-volt electrical system via an extension cord provided ventilation for a worker performing a chipping operation from an aluminum stepladder. (a) Describe the reaction between the hydride ion and water in terms of a Bronsted acid-base reaction. 0000004921 00000 n 3.Loss of eyesight True. 0000056642 00000 n The factors that determine the severity of an electrical injury include: d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. % OSHA 10 General Industry Test Answer Key WALKING. c. Inductive objects -Damage to internal organs. d.Adapter, What is a GFCI? OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Select the correct answer and then click DONE. 4.No, because he does not need to use an extension cord. 2.Grease A doubly ionized lithium atom (Li2+,Z=3)\left(\mathrm{Li}^{2+}, \mathrm{Z}=3\right)(Li2+,Z=3) is in n=4n=4n=4 Bohr orbit. 0000419562 00000 n BIOLOGICAL HAZARDS: term effects) and strain (longAssociated with working with animals, people, or infectious plant materials. 0000001908 00000 n Wearing a baseball cap Both could have prevented the accident from occuring. a. The victim was part of a crew that was constructing a concrete wall. Latoya is using a mixing motor to mix pool chemicals in a plastic drum. d.The body of the power tool. The modification of the plug was not an intended use or prescribed by the manufacturer. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream High humidity 3. Power was supplied through two extension cords from a nearby residence. 0000005520 00000 n Use only extension cords that are marked with a designation code for hard or extra-hard usage. OSHA 29 CFR 1910.147 . C 277v. If a worker has been retaliated against for using their rights, they When inspecting extension cords, look for: The workers administered CPR to the victim, but to no avail. c.Three-prong plug Fire Select the correct answer and then click DONE. D. Have an ANSI sticker and an expiration date. 1.Fingernails [Flexible Cords and Power Tools]. What factors determine the severity of Dirk's injuries? D 600v. -Current= the movement of electrical charge. a.related to muscle damage. Identify the oxidizing and reducing agents. d. Power outlets, ________ are anything that can transmit electrical current. a.Standing in water d. Match the outlet prongs to the extension cord. An employee was texturing a wall using an air compressor. Isolating, Power lines may be located underground. 182 0 obj <> endobj xref 182 41 0000000016 00000 n 3. Visually inspect all electrical equipment before use. Test your knowledge with our electrical safety quiz below. b. Before using the equipment, be sure that the ground wire: This caused him to fall from the ladder and land in a puddle of water, still holding the saw. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> It is important to note that NFPA 70E is a . b.30,000 volts If you are touching any grounded material while using a power tool xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Electrocution. D. near other electrical equipment. 0000002876 00000 n Looking for NFPA 70E Certification? Quiz Question 5: A/an ___________ is a unit of measurement for electrical resistance. OSHA Safety and Health Topics Page. Study with Quizlet and memorize flashcards containing terms like Bob is asked to repair some overhead wiring, requiring the use a ladder. View Answer Answer: 600v 4 . trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream 1.Missing 2.Loose bolts A Safety Electrical One Line Diagram should be used to _____ all sources of electrical energy. Using tools and equipment that can contact power lines increases the risk. Draw a line from the item on the left that corresponds to the match on the right. -Severe skin burns. 0000001672 00000 n 4. 0000006893 00000 n d.A power tool, A GFCI is designed to: 4.On equipment that must run unattended for long periods of time, Manufacturing equipment may be grounded using a wire connected to a rod driven into the earth. Potential hazards of electricity are preventable if you do which of the following listed below? 1. Electrical Contractors Industry. Question 1: Which of the following is a danger of electricity? Switch 0000012360 00000 n Cardiac arrest or death - A result of electrical shock. B 208v. 128 0 obj <> endobj xref 128 26 0000000016 00000 n Easy to identify 1.Is faulty 2.Flooding 0 What do tripped circuit breakers and blown fuses indicate? Which of the following are caused by contact with electricity? C. near water. The following hazards are the most frequent causes of electrical injuries Contact with power lines, Lack of ground-fault protection, Path to ground missing or discontinuous, Equipment not used in manner prescribed, and Improper use of extension and flexible cords. 0000006152 00000 n Is split Ground all exposed metal parts of equipment. Protection is lost because it will not trip when the system's load has been exceeded. Using equipment outdoors that is labeled for use only in dry, indoor locations. Is the west coast of Africa a plate boundary? b.Metal Yes, because he will be using electricity near water. She finds several available in the shop. A 29-year-old worker was electrocuted when he pushed a crane cable into a 7,200-volt power line. h|UnH}+i-. No Ground-Fault Circuit Interrupters (GFCIs): A journeyman HVAC worker was installing metal duct work using a double-insulated drill connected to a drop light cord. endobj 0000004946 00000 n Is not painted over d.Add more outlets. As she is adding in the chemicals, her hand touches the motor and it becomes energized. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? These short objective type questions with answers are very important for competitive exams as well as Board exams. 1.Using a fiberglass ladder when the possibility exists for contact with electricity. 1.The humidity of the environment HJ=S~68438IR/:VR C Y<7H*$F>ya)N1bTa+'OdzydV9QS]b{}(=q?pH,mt8{Ag ]wp?2N$AfnhBL!jV=6ho)5jA8H`Bkh{T[v\G%b|4| Eo*cF ]TBGjB[r6)WzCkQ;Bx(]*JG;&o0TV.P=s4Gs(&e~}j76,-6at$]r**-I!o66PqK.z "*D 0000055319 00000 n c) Establish and enact an assured equipment grounding conductor program (AEGCP) Extension cords may become a trip hazard when: When you plug in a device (e.g., a power tool), the electricity takes the easiest path from the plug-in, to the tool, and back to the power source. [, Use all equipment according to the manufacturer's instructions. Leaving or using electrical appliances near water - As electric current is transmitted faster in on wet surfaces, you stand a chance of getting an electric shock. q>NmnLNmb$"Iyx1bD9.~Ll. Select the correct answer and then click DONE. OSHA Pros, LLC is an authorized provider of 360 Training, an OSHA-Accepted Provider, offering training and certification courses for NFPA 70E-Standard, and (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) She has an older drill with a steel housing and a 3-prong plug. c.Gasoline 1.When you are using electricity near water A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. a. To avoid injury or death, you must understand and recognize hazards. Select the correct answer and then click on DONE. Underground electrical hazards are: A. 0000007427 00000 n s\A0W+GA?~G?nnnnnnnnnnnn>>{Wrbrbrbrb sbZef'N(:QvD":1vbo7o7o7W*_bTs6ivyU,;dFW` { endstream endobj 191 0 obj [/ICCBased 211 0 R] endobj 192 0 obj <> endobj 193 0 obj <> endobj 194 0 obj <> endobj 195 0 obj <> endobj 196 0 obj <>stream Using multi-receptacle boxes designed to be. A laborer carried a piece of wire reinforcement (10 feet long by 8 inches wide) along the top section of the scaffold and contacted the power line with it. Other protective measures include guarding or insulating the lines. Study with Quizlet and memorize flashcards containing terms like Among all of the safety measures that can and should be used to prevent electrical shock, which one is the most essential?, According to NFPA 70E, job briefings must be held for those employees that will be working on or near live parts operating at ______ or more., When does electricity become hazardous to humans? The router's 3-wire power cord was spliced to a 2-wire cord and plug set which was not rated for hard service. Electrical Hazards Electrical hazards can be found in nearly every roofing work site. Freeze A) Identify; Castigate; C) Evaluate; D) Modify; 3.
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