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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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English term or phrase:delta high leg
English translation:high leg delta (also known as wild-leg or red-leg delta) is a type of electrical service connection
Entered by: Taña Dalglish
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04:53 Nov 3, 2008
English to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng / comercial / industrial
English term or phrase: what does the term delta high leg means
just came across with this question with one master electician
francisco j jimenez
explanation 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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Taña Dalglish
Jamaica
Local time: 10:57
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3 +2explanation below
Taña Dalglish


  

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9 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +2
explanation 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!

Taña Dalglish
Jamaica
Local time: 10:57
Native speaker of: Native in EnglishEnglish
PRO pts in category: 4
Grading comment
Selected automatically based on peer agreement.

Peer comments on this answer (and responses from the answerer)
agree  orientalhorizon
49 mins
  -> Many thanks orientalhorizon. I appreciate it.

agree  Jack Doughty
2 hrs
  -> Thank you so much Jack.
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Changes made by editors
Nov 17, 2008 - Changes made by Taña Dalglish:
Created KOG entryKudoZ term » KOG term
Nov 3, 2008 - Changes made by Tony M:
LevelNon-PRO » PRO


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