Three-to-two-prong Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Three-to-two-prong and links to relevant pages within the course.
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| Extension Cords and Adapters Electrical extension cords should not be used except in emergency situations. If an extension cord needs to be used, it must consist of 16 gauge or larger wire and must contain a ground wire. An extension cord should not be fastened with staples or hung in any way that could damage the outer covering or insulation. The wiring should be tested for physical integrity, polarity, and continuity of grounding at the time that it is used. An electrical extension cord cannot be used as a substitute for appropriate distribution of electrical power. Adapters designed to increase the number of outlets, and three-to-two-prong adapters should not be used. | View Page |
| Ground A ground is a conducting connection between an electrical circuit or equipment and the earth, or between an electrical circuit and some conducting body that serves in place of the earth.The purpose of a ground is to prevent the buildup of voltages that may result in a hazardous situation for the connected equipment and/or for the person operating the equipment.All electrical equipment in the laboratory that is not clearly marked as "double-insulated" must be grounded by using a three-pronged power cord. Three-to-two-prong adapters cannot be used because they interrupt the continuity of the grounding. | View Page |