<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Thanks Joel</DIV>
<DIV>When I first started working most of the city was DC and we had a lot of work tearing out DC motors and putting in AC motors. <BR><BR>--- On <B>Tue, 10/19/10, Joel Davidson <I><joel.davidson@sbcglobal.net></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Joel Davidson <joel.davidson@sbcglobal.net><BR>Subject: Re: [RE-wrenches] AC voltage in North America<BR>To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org><BR>Date: Tuesday, October 19, 2010, 11:24 AM<BR><BR>
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<DIV><FONT size=2 face=Arial>Hello Darryl,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I tip my hat in honor to your many years working with electricity. </FONT><FONT size=2 face=Arial>110 volts was Edison's choice for direct current. Then Tesla/Westinghouse chose higher voltage alternating current stepped down to 120 volts. See <A href="http://en.wikipedia.org/wiki/War_of_Currents" rel=nofollow target=_blank>http://en.wikipedia.org/wiki/War_of_Currents</A> 115-volt AC/DC universal motors in drills and other tools were fairly common until low-cost induction motors became widespread.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Best regards,</FONT></DIV>
<DIV><FONT size=2 face=Arial>Joel Davidson</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial; BACKGROUND: #e4e4e4"><B>From:</B> <A title=daryl_solar@yahoo.com href="http://us.mc519.mail.yahoo.com/mc/compose?to=daryl_solar@yahoo.com" rel=nofollow target=_blank ymailto="mailto:daryl_solar@yahoo.com">Darryl Thayer</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=re-wrenches@lists.re-wrenches.org href="http://us.mc519.mail.yahoo.com/mc/compose?to=re-wrenches@lists.re-wrenches.org" rel=nofollow target=_blank ymailto="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, October 18, 2010 7:18 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] AC voltage in North America</DIV>
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<DIV>When I was an electrical apprentus back in the late 40's we called it 110/220 then in the fifties the voltage was reised to 115/230 and some time in the 1960 it was raised to 120 240 </DIV>
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<DIV>Darryl<BR><BR>--- On <B>Mon, 10/18/10, Marco Mangelsdorf <I><<A href="http://us.mc519.mail.yahoo.com/mc/compose?to=marco@pvthawaii.com" rel=nofollow target=_blank ymailto="mailto:marco@pvthawaii.com">marco@pvthawaii.com</A>></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Marco Mangelsdorf <<A href="http://us.mc519.mail.yahoo.com/mc/compose?to=marco@pvthawaii.com" rel=nofollow target=_blank ymailto="mailto:marco@pvthawaii.com">marco@pvthawaii.com</A>><BR>Subject: [RE-wrenches] AC voltage in North America<BR>To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org><BR>Date: Monday, October 18, 2010, 8:27 PM<BR><BR>
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<P class=yiv61989054yiv1671298692MsoNormal>I just don’t understand it.</DIV></DIV>
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<P class=yiv61989054yiv1671298692MsoNormal>Lots of people—from reporters to homeowners—consistently refer to the AC voltage in their homes as “110/220.”
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<P class=yiv61989054yiv1671298692MsoNormal>Where does this come from?
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<P class=yiv61989054yiv1671298692MsoNormal>If North American utilities were putting out power at that voltage range, they would be in serious trouble.
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<P class=yiv61989054yiv1671298692MsoNormal>Anyone able to educate me on this matter?
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<P class=yiv61989054yiv1671298692MsoNormal>marco
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