The ground wire shall connect to the green terminal.įor 208 volt applications, any two of the hot phase conductors will be connected to the X and Y terminals of a suitable NEMA X6-XX receptacle. The neutral conductor will be connected to the silver terminal. Some or all of these wires may show up in the box.įor 120 volt applications, any one of the hot phase conductors will be connected to the copper-colored terminal on a suitable NEMA X5-XX receptacle. There are three hot phase conductors (colored red, blue, and yellow), a neutral conductor (colored white), and a ground wire (colored green). Generally a 120 / 208 volt, five wire system derived from a transformer with a wye secondary is used in commercial applications. A suitable 120 volt receptacle will be installed in the box. This conductor shall be wrapped with white tape. A qualified person can change a 240 volt box to a 120 volt box by taking one of the phase conductors and connecting it to the neutral bus in the circuit breaker panel. When connecting a receptacle (usually a NEMA X6-XX), the green (or bare) wire bonds to the ground lug and the phase conductors bond to the X and Y lugs (either phase conductor can go to either lug). Voltage between the two phase conductors should be 240 Volts. The expected colors of the wires should be green (the green wire is ground, but it could also be a bare wire rather than green) and two black wires (phase conductors). If the box is being used for a 240 volt application, there should be three wires in the box. A suitable 240 volt receptacle will be installed in the box. TT-30 (Travel Trailer 30amp) 30A 120-volt 3-prong outlet, the older style found in RV parks, not used in. 14-30 standard 30A 240 volt 4-prong Dryer outlet found in homes built in 1996 and newer. This conductor shall be wrapped with black tape. Here is a brief list of those different plugs and their use: - 10-30 standard 30A 240 volt 3-prong Dryer outlet found in homes built before 1996. A qualified person can change a 120 volt dedicated box to a 240 volt box by connecting the neutral wire to a suitable dual-pole circuit breaker on the opposite phase leg. When connecting a receptacle (usually a NEMA X5-XX), the ground wire bonds to the green terminal, neutral bonds to the silver terminal, and hot bonds to the copper-colored terminal. Voltage between the phase and neutral conductors will be 120 volts nominal. The expected color of the wires should be green (the green wire is ground, but it could also be a bare wire rather than green), white (neutral), and black (phase also known as hot). Generally a 120 / 240 volt, three-wire system is used in residential applications.įor 120 volt applications, there should be three wires in the box. : 240v Receptacle 1-48 of over 1,000 results for '240v receptacle' Results Guaranteed for Life, NEMA 14-50 Commercial / Industrial Grade U.L. This information is applicable to the United States only, although Canadian applications will be similar. This document describes which voltages can be derived at the electrical outlet receptacle from the existing wiring found in common electrical boxes for both residential and commercial applications.
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