Nfpa 70e Correct Questions & Answers(Graded A+)

Three main electrical hazards working on energized circuit - ANSWER Shock, fire, arc What is an arc flash? - ANSWER A type of electrical explosion or discharge that results from low impedance connection through air to ground or another phase. What is an arc blast? - ANSWER The explosive burst of energy that occurs during an arc flash. What determines the effects of shock on the body? - ANSWER Time, path, amount of current What is the onset of second-degree burn - ANSWER 1.2 cal/cm^2 How is FR clothing related - ANSWER Arc Thermal Protect Value What are two field methods of testing dielectric gloves? - ANSWER Roll up method and glove inflator How often do rubber gloves need to be sent to be dielectrically tested? - ANSWER Before first issue and every six months there after All testing equipment must be ___________ for the circuit and equipment to be tested - ANSWER Rated Name the three shock protection boundaries - ANSWER Limited approach, restricted approach, arc flash boundary What is the basis for selecting rubber insulated gloves - ANSWER Voltage rating on label & color What are six elements of placing an installation in electrically safe work condition - ANSWER 1. Properly installed 2. Properly maintained 3. Equipment used according to manufacturers and listing and labeling instructions