Overview An overcurrent is a current that exceeds the amperage rating of the conductors (cable), equipment (motors, instruments) or other devices in a circuit. Without adequate protection, an overcurrent can damage conductors and equipment and potentially harm p Learn More>>
This 3-hour course reviews the overvoltage situations that may occur in residential applications and methods to protect consumer equipment from overvoltages. The principle cause of overvoltages in a residential environment is lightning surges. Lightning surges are Learn More>>
Overview Area classification is based on the properties of the flammable substances that may be present in an area and the likelihood that the flammable substance will be present. Area classification is used to determine the type of equipment that can safely be. Learn More>>
One of the most critical decisions faced by the designer of a power system is how the neutral of the system should be grounded. This course presents the subject of neutral grounding in a very structured fashion. First, a simple equivalent circuit is developed... Learn More>>
Overview Electricity can expose workers to electric shock, electrocution, burns, fires and explosions on the job. Electrocutions resulted in 278 work-related deaths in the U.S. in 1999. Most work-related injuries and deaths can be prevented by employing OSHA ele Learn More>>
Overview Electrical safety begins at the design phase of a project and carries through to the operation of the facility. In this course the student will become familiar with the occupational safety and health considerations which should be inherent... Learn More>>
Overview The most common 120 volt electrical hazard on construction sites is ground fault shock Proper insulation and grounding and the use of ground fault circuit interrupters (GFCI's) can greatly reduce the risk of injuries and accidents from... Learn More>>
This two-hour course discusses electrical ground fault circuit interrupters (GFCI's), how they work and the benefits to society. The course reviews the theory of operation, electrical characteristics, and the installation issues associated with GFCI's. Learn More>>
Too much current flowing through an electric circuit can damage the circuit and create a safety hazard. How much current is "too much current"? That depends on the circuit and its components. For some circuits, 1 ampere would be too much current, while for other ci Learn More>>
This 5-hour course reviews overvoltage situations on electric utility distribution systems and the primary methods to protect the utility system from overvoltages. The principle cause of overvoltages on an electric distribution system is lightning surges. Learn More>>
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