what does the term delta high leg means
English translation: high leg delta (also known as wild-leg or red-leg delta) is a type of electrical service connection
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| 04:53 Nov 3, 2008 |
| English language (monolingual) [PRO] Tech/Engineering - Electronics / Elect Eng / comercial / industrial | ||||
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|  Selected response from: Taña Dalglish Jamaica Local time: 12:41 | |||
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| 3 +2 | explanation below |
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Answers
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peer agreement (net): +2
peer agreement (net): +2explanation below Explanation: http://en.wikipedia.org/wiki/High_leg_delta High leg delta From Wikipedia, the free encyclopedia A high leg delta (also known as wild-leg or red-leg delta) is a type of electrical service connection sometimes found in older three-phase electric power installations. This type of service is supplied by a transformer having four wires coming out of the secondary: the three phases, plus a neutral that is used to center-tap one of the windings. The voltages between the three phases are the same in magnitude, however the voltage magnitudes between a particular phase and the neutral vary. The phase-to-neutral voltage of two of the phases will be half of the phase-to-phase voltage. The remaining phase-to-neutral voltage will be √3 times half the phase-to-phase voltage. Typically, the transformer is connected such that the 'B' phase is the 'high' leg. According to Article 110.15 of the 2005 National Electrical Code, panelboards connected to this type of transformer must explicitly identify the high leg, preferably by coloring it orange. HTH! |
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