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Unformatted text preview: trical connection to the earth ground fault loss of current from a circuit to a ground connection ground potential voltage a grounded part should have; 0 volts relative to ground guarding covering or barrier that separates you from live electrical parts insulation material that does not conduct electricity easily leakage current current that does not return through the intended path, but instead "leaks" to ground lock-out applying a physical lock to the energy sources of circuits and equipment after they have been shut off and de-energized milliampere (milliamp or mA) 1/1,000 of an ampere NEC National Electrical Code--comprehensive listing of practices to protect workers and equipment from electrical hazards such as fire and electrocution neutral at ground potential (0 volts) because of a connection to ground NFPA 70E Standard for Electrical Safety in the Workplace This standard addresses those electrical safety requirements for employee workplaces that are necessary for the practical safeguarding of employees. It covers the installation of electrical conductors, electrical equipment, signaling and communications conductors and equipment, and raceways, excluding generating plants, substations, and control centers. ohm unit of measurement for electrical resistance Page 77 Glossary of Terms (continued)
OSHA Occupational Safety and Health Administration--Federal agency in the U.S. Department of Labor that establishes and enforces workplace safety and health regulations overcurrent protection device device that shuts off the current in a circuit when it reaches a certain level overload too much current in a circuit power amount of energy used each second, measured in watts PPE personal protective equipment (eye protection, hard hat, special clothing, etc.) qualified person someone who has received mandated training on the hazards and on the construction and operation of equipment involved in a task resistance material's ability to decrease or stop electrical current risk chance that injury or death will occur shocking current electrical current that passes through a part of the body short low-resistance path between a live wire and the ground, or between wires at different voltages (called a fault if the current is unintended) tag-out applying a tag that alerts workers that circuits and equipment have been locked out trip automatic opening (turning off) of a circuit by a GFCI or circuit breaker voltage measure of electrical force wire gauge wire size or diameter (technically, the cross-sectional area) Page 78 references
1. NIOSH . NIOSH alert: preventing deaths, injuries, and illnesses of young workers. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2003128. 2. Mccann M . Unpublished data. 3. Lee RL . Electrical safety in industrial plants. Am Soc Safety Eng J 18(9):3642. 4. Kouwenhoven WB . Human Safety and Electrical Shock. Electrical Safety Practices, Monograph 112, Instrument Society of America, P. 93. Subpart J--General Environment Controls
1910.147 The control of hazardous energy (lock-out/tag-out) 1910.147 Appendix A--Typical minimal lock-out procedures Subpart R--Special Industries
1910.268 Telecommunications 1910.269 Electric power generation, transmission, and distribution OSHA standards related to electrical safety for Construction are listed below: Subpart K--Electrical
general 1926.400 Introduction
installation safety requirements Appendix
OSHA occupational safety and health standards for General Industry are located in the Code of Federal Regulations (CFR), Title 29, Part 1910 (abbreviated as 29 CFR 1910). Standards for Construction are located in Part 1926 (abbreviated as 29 CFR 1926). The full text of these standards is available on OSHA's Web site: www.osha.gov. OSHA standards related to electrical safety for General Industry are listed below: 1926.402 1926.403 1926.404 1926.405 Applicability General requirements Wiring design and protection Wiring methods, components, and equipment for general use 1926.406 Specific purpose equipment and installations 1926.407 Hazardous (classified) locations 1926.408 Special systems
safety-related work practices 1926.416 General requirements 1926.417 Lock-out and tagging circuits
safety-related maintenance and environmental considerations Subpart S--Electrical
general 1910.301 - Introduction
design safety standards for electrical systems 1926.431 Maintenance of equipment 1926.432 Environmental deterioration of equipment
safety requirements for special equipment 1910.302 1910.303 1910.304 1910.305 Electric utilization systems General requirements Wiring design and protection Wiring methods, components, and equipment for general use 1910.306 Specific purpose equipment and installations 1910.307 Hazardous (classified) locations 1910.308 Special systems
safety-related work practices...
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This document was uploaded on 03/14/2014 for the course ECE 482 at University of Tennessee.
- Spring '09