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Arc Flash Hazard - SOLVED ANSWER-A source of possible injury or damage to health associated with the release of energy caused by an electrical arc. Arc Rating - SOLVED ANSWER-The value attributed to materials that describes their performance to exposure to an electrical arc discharge. The arc rating is expressed in cal/cm2. Arc rating is reported in either ATPV or Ebt. Barricade - SOLVED ANSWER-A physical obstruction such as tapes, cones, or a frame type wood or metal structures intended t...

What is an Arc Flash? - SOLVED ANSWER-A short circuit that jumps through the air from one exposed conductor to another. What makes an Ar Flash dangerous? - SOLVED ANSWER-Temperatures of up to 35k' F, shrapnel, molten metal, chocks, shockwave (2k lbs/foot^2), soud (140 dB), burn injuries. Hazard/Risk Category 1 contains PPE requirements. What are they? - SOLVED ANSWER-hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather work shoes. What proper electrical PPE p...

After a circuit is deenergized by the automat- ic operation of a circuit protective device, the circuit shall not be manually reenergized until it has been determined that the equipment and circuit can be ? energized. - SOLVED ANSWER-Safely After interrupting a fault approaching its in- terrupting rating, a ? must be inspected and tested in accordance with the manufac- turer's instructions. - SOLVED ANSWER-Circuit breaker The NFPA 70E states that OCPDs shall be ? in accordance w...

NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters; 18 informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction. Chapter 1 is divided into ? articles. - SOLVED ANSWER-A. 3/5 The appointment of the NFPA 70E Committee was announced on January 7, ? , and was formed to assist ? in preparing electrical safety standards that would serve its requirements. - SOLVED ANSWER-B. 1976 / OSHA The 1995 edition of NFPA 70E included the concepts of ? and th...

Electrically Safe Work Condition - SOLVED ANSWER-When the conductors or circuit parts: -Have been disconnected, locked out or tagged out, verified to have been disconnected, temporarily grounded An electrically safe work condition needed: -If an employee is going to be within the limited approach boundary -If an employee is interacting with the equipment in a manner that poses an increased likelihood of injury from an arc flash hazard Hazard elimination is the most effective way to sa...

Standard for electrical safety in the workplace - SOLVED ANSWER-NFPA 70E 1979 - SOLVED ANSWER-Originally developed at OSHA's request, the first edition of NFPA 70E was published in _______ and contained installation safety requirements borrowed from the National Electric Code. 1981 - SOLVED ANSWER-In _____, safety-related work practice requirements were added. 1995 - SOLVED ANSWER-In _______, "limits of approach" and "arc flash" concepts were introduced. 1900s and 2000s - SOLVED...

The 3 hazards of electricity are? - SOLVED ANSWER-Shock, Arc Flash, Ark Blast When an individual disconnect device in an energized MMC has been locket out, that MCC is... - SOLVED ANSWER-Still a potential Arc Flash risk When working within the restricted approach boundary which is REQUIRED in order to perform non-electrical work near energized equipment? - SOLVED ANSWER- The Crushed Gravel in an electrical substation is intended to... - SOLVED ANSWER-Increase the resistance of worker to...

What does the general duty clause of the Occupational Safety and Health Act require of employers? - SOLVED ANSWER-Provide a workplace free from recognized hazards What do safety-related work practices require regarding cell lines? - SOLVED ANSWER-The cell line is not grounded through the welding machine. You are going to conduct battery activities that will require you to handle liquid electrolyte. What protective equipment must be available to you? - SOLVED ANSWER-Eye wash facilities W...

2. For exposed 480 VAC energized conductors and using NFPA 70E Table 130.2(C) or the Shock Protection Boundaries and PPE Fermilab Summary table for NFPA 70E, the Restricted Approach Boundary for shock protection is a. 1 Inch b. 7 Inches c. 1 Foot d. 3 Feet 6 Inches - ACCURATE ANSWER-c 3. For energized circuits, escorted unqualified persons are allowed within which Shock Protection Approach Boundaries? a. Restricted Approach Boundary b. Limited and Restricted Approach Boundaries c...

True or False: A mandatory rule can have exceptions. - ACCURATE ANSWER-False True or False: Permissive rules are allowed but not required to be performed - ACCURATE ANSWER-true What does NEC stand for? - ACCURATE ANSWER-National Electrical Code What do chapters 1-4 of the NEC cover - ACCURATE ANSWER-General electric installations What do chapters 5-7 of the NEC cover - ACCURATE ANSWER-Special equipment and loctations What does chapter 8 of the NEC cover - ACCURATE ANSWER-Communica...