MadSci Network: Engineering
Query:

Subject: How is one ac line converted to two ac lines with opposite polarity?

Date: Tue Jan 25 16:30:42 2000
Posted by Gerald Steede
Grade level: 10-12 School: No school entered.
City: Russellville State/Province: Arkansas Country: USA
Area of science: Engineering
ID: 948839442.Eg
Message:

	The transformer on the pole outside of my home has one high 
voltage wire going in and a neutral.  Coming out are three wires, one is a 
neutral and two at 120 volts each, with opposing polarity.  My question, 
how does the transformer provide or create the opposing polarity between 
the two hot wires?  Or in other words, how is one line with ac current 
changed into two lines with ac current that alternate opposite of each 
other?  I did a search on this subject at this site and couldn’t find an 
explanation. 



Re: How is one ac line converted to two ac lines with opposite polarity?

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