Australian electrical system

: 7bit
We have a power system that is 240 volts single phase or 415 volts 3 phase.
The mains in the street have 4 wires, 3 x 240 volts (active) and a neutral. Between each of the 240 volt wires is 415 volts and between the 240 volt active and the neutral is 240 volts.
Most modern homes are supplied with an 80 amp 2 cable system IE 240 volts.
If the current draw is greater than that and no 3 phase motors are installed then they can run 2 actives (phases) in and a neutral.
There are no transformers in these homes for the power supply, they just run some things off one active and some things off the other active.
If the load is too great for this 2 phase set up or you have one or more 3 phase motors then they will connect up 3 phases to your home (3 actives and a neutral) The power outlets are to be balanced over the 2 or 3 phases.
Power outlets in the homes are rated at 10 amps (2,400 watts) there are also available 15 amp outlets (3,600 watts) and 20 amp outlets (4,800 watts) although most homes do only have the 10 amp outlets. All outlets are earthed, and the current regulations require the earth and neutral to be joined in the fuse box.
The way the power outlets are configures is that a 10 plug will fit into a 10 amp, a 15 amp and 20 amp outlet, a 15 amp plug will fit into a 15 amp and a 20 outlet while 20 amp plug will only fit into a 20 outlet.
There are 30 amp outlets, but there are very rare and in general and equipment using a lot of power, is wired direct into an isolation switch and not an outlet.
Here on the 240 volt systems the active is red or brown, the neutral is black or blue and the earth is green and yellow (striped).
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That is what we have for most homes, however in a few parts of the country where there are quite some distances between the homes and power supplies they do have an alternative system. it is 480 volts and only one cable, it is called SWER (Single Wire Earth Return) at the home on a pole they mount a transformer to supply 240 volts to that home.
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Thanks for explanation! However I work across USA, Europe and Ireland trouble shooting Environmental test chambers (Climate change units) but I have never come across as ridicules set up as that. Good luck my friend
<DIV dir=ltr> <DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 14pt"> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>We have a power system that is 240 volts single phase or 415 volts 3 phase.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>The mains in the street have 4 wires,&nbsp; 3 x 240 volts (active) and a neutral. </FONT>&nbsp;<FONT size=4>Between each of the 240 volt wires is 415 volts and between the 240 volt active and the neutral is 240 volts. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Most modern homes are supplied with an 80 amp 2 cable system IE 240 volts.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>If the current draw is greater than that and no 3 phase motors are installed then they can run 2 actives (phases) in and a neutral. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>There are no transformers in these homes for the power supply, they just run some things off one active and some things off the other active. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>If the load is too great for this 2 phase set up or you have one or more 3 phase motors then they will connect up 3 phases to your home (3 actives and a neutral) The power outlets are to be balanced over the 2 or 3 phases.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Power outlets in the homes are rated at 10 amps (2,400 watts) there are also available 15 amp outlets (3,600 watts) and 20 amp outlets (4,800 watts) although most homes do only have the 10 amp outlets. All outlets are earthed, and the current regulations require the earth and neutral to be joined in the fuse box. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>The way the power outlets are configures is that a 10 plug will fit into a 10 amp, a 15 amp and 20 amp outlet, a 15 amp plug will fit into a 15 amp and a 20 outlet while 20 amp plug will only fit into a 20 outlet.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>There are&nbsp; 30 amp outlets, but there are very rare and in general and equipment using a lot of power, is wired direct into an isolation switch and not an outlet.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Here on the 240 volt systems the active is red or brown, the neutral is black or blue and the earth is green and yellow (striped).</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>--------------------------------</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>That is what we have for most homes, however in a few parts of the country where there are quite some distances between the homes and power supplies they do have an alternative system. it is 480 volts and only one cable, it is called SWER (Single Wire Earth Return) at the home on a pole they mount a transformer to supply 240 volts to that home.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV></DIV></DIV></BLOCKQUOTE></BODY></HTML>
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<P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt"></FONT></SPAN>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpFirst><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">Thanks for explanation! However I work across USA, Europe and Ireland trouble shooting </FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpMiddle><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt"><SPAN style="mso-spacerun: yes">&nbsp;</SPAN>Environmental test chambers (Climate change units) but I have never come across as </FONT><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 10pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpLast><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt">ridicules set up as that. Good luck my friend.</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt">Just curios, what part of the set-up do you find ridicules?</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P></DIV></DIV></DIV></BODY></HTML>
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<P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt"></FONT></SPAN>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpFirst><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New &#13;&#10;Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">Thanks for explanation! However I work across USA, Europe and Ireland trouble shooting </FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpMiddle><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New &#13;&#10;Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt"><SPAN style="mso-spacerun: yes">&nbsp;</SPAN>Environmental test chambers (Climate change units) but I have never come across as </FONT><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 10pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpLast><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New &#13;&#10;Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt">ridicules set up as that. Good luck my friend.</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt">Just curios, what part of the set-up do you find ridicules?</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>You have indicated that you have 4 wires' ( two hot one neutral and one ground)</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>&nbsp;I can not figure out how are you getting 240 and 415 from same source???</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>Standard system in USA is 120/240/480. Yes you can have 415 but need to be isolated system</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>&nbsp;and if divided you would get 207 and not 240 on lower voltage, so how are you getting 240 you </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>got me, what is standard residential power there? are your country using 220/50 as standard source?&nbsp;&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>I work on systems 440/3/60 in USA, in Europe on 50 Hrz&nbsp; it would be 380/3/50 with one </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>phase (wire) at ground potential however this are special supplies for specific</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>equipment and not for general purposes use. I can not see common grounds to get 240 </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>from 415 or divide 415 to get 240 it does not compute. Sorry! Other the system </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>that was built to operate on 220/60 hrz power source&nbsp;need to be cut down, to around </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>200 Volts to operate on 50 hrz. by use of buck transformers likewise the 440/60 systems </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>need to be cut down to 380 to operate on 50 hrz systems, otherwise system would overheat </P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal>and shut down or worst burn up.</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=3 face=Verdana></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P></DIV></DIV></DIV></BLOCKQUOTE></BODY></HTML>
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<P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt"></FONT></SPAN>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt"></FONT></SPAN>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">//Most modern homes are supplied with an 80 amp 2 cable system IE 240 volts.</FONT><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">If the current draw is greater than that and no 3 phase motors are installed then they can run 2 actives (phases) in and a neutral.</FONT><SPAN style="mso-spacerun: yes"><FONTstyle="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">There are no transformers in these homes for the power supply, they just run some things off one active and some things off the other active.</FONT><SPAN style="mso-spacerun: yes"><FONTstyle="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">If the load is too great for this 2 phase set up or you have one or more 3 phase motors then they will connect up 3 phases to your home (3 actives and a neutral\\</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">I work on systems 440/3/60 in USA, in Europe on 50 Hrz<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>it would be 380/3/50 with one </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">phase (wire) at ground potential however this are special supplies for specific</FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">equipment and not for general purposes use. I can not see common grounds to get 240 </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">from 415 or divide 415 to get 240 it does not compute.</FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">I have already quoted you a URL giving various voltages which included Europe.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt 36pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><A href="http://www.sensorcentral.com/worldsupport/standards12.php "><FONT style="FONT-SIZE: 11pt" color=#0000ff>http://www.sensorcentral.com/worldsupport/standards12.php </FONT></A></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">It seems you are confuse, as the power supply in UK and nearly all of Europe is quite similar to here, with the exception we have slightly higher voltage.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">Europe and UK (with the exception of Spain) the system is 220 volts single phase and 380 volts 3 phase or 230 volts single phase and 400 volts 3 phase. Note these voltages are not doubled. </FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">UK used to have a 240 volt 415 volt system but reduce the voltage a bit to comply with European standards</FONT></P> <P style="MARGIN: 0cm 0cm 0pt 36pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">I work on systems 440/3/60 in USA, in Europe on 50 Hrz<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>it would be 380/3/50 with <SPAN style="mso-spacerun: yes">&nbsp;</SPAN><SPAN style="mso-spacerun: yes">&nbsp;</SPAN>one </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">phase (wire) at ground potential however this are special supplies for specific</FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">equipment and not for general purposes use. I can not see common grounds to get 240 </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">from 415 or divide 415 to get 240 it does not compute. Sorry! Other the system </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">that was built to operate on 220/60 hrz power source need to be cut down, to </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt">around </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">200 Volts to operate on 50 hrz. by use of buck transformers likewise the 440/60 systems </FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">need to be cut down to 380 to operate on 50 hrz systems, otherwise system would overheat</FONT></P> <P style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 32.2pt; mso-list: l0 level1 lfo1" class=MsoNoSpacing><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">and shut down or worst burn up.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">As I have told you above we use Delta to wye transformers to give us 240 volts and 415 volts.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">You are getting confused with running systems that are built for 50 cycles running on 50 cycles and running a motor on a different frequency that it was designed for.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">Running a motor on different frequency than it was designed for can overheat it.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">From memory 60 cycle motors have less iron in them that 50 cycle motors, so running a 60 cycle motor on 50 cycles will cause it to run hotter.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt">Running a 4 pole 50 cycle motor which are designed to run at 1440 RPM, running such a motor on&nbsp; 60 cycles power will cause it to run at 1750 RPM causing it to draw more current. No wonder they overheat.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT size=4>Hope this is a help to you.</FONT></P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT size=4></FONT>&nbsp;</P> <P style="MARGIN: 0cm 0cm 0pt" class=MsoNoSpacing><FONT style="FONT-SIZE: 11pt"></FONT>&nbsp;</P></DIV></DIV></DIV></BODY></HTML>
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The same way we get 120/208 here in the USA, the 2 legs are phased 120ยฐ apart, not 180ยฐ, hence the 2 donโ€™t fully add together. Stealing from answers.com:
First, consider single-phase 120/240 service like you would find in a house. the two hot wires are said to be 'in phase'. Think of it this way. Imagine a ruler 12 inches long. Put your finger on the six inch mark, the center. How far to each end? Six inches. Both ends are on the same line, just in opposite directions. So if you go six inches one way, and six inches the other way, the total distance is 12 inches. 120/240 volt systems are like that voltage-wise. The middle of the ruler is the neutral, and each end is a hot wire. When one hot leg is going positive, at the exact same time (that's the 'in phase' part) the other leg is going negative. Same line only opposite directions, like our ruler. So the two 120 volt legs just add up to 240. Now, here's the important part. Since one leg goes positive while the other leg goes negative, they are said to be 180 degrees apart, 360 degrees making up one complete AC cycle (2 X 180 = 360). In three phase power, there are, not two, but THREE hot wires. Since there are three, they can no longer be 180 degrees apart. They are 120 degrees apart (3 X 120 = 360). So, when phase A peaks, phase B has not yet peaked. it is at some intermediate voltage between zero and maximum. The two phases cannot just be added up because of this fact. Back to our ruler. Break the ruler in half. bend the two halves so the ruler is no longer straight (180 degrees) but bent at an angle of 120 degrees. Draw a line from end to end. See how we have formed a triangle? See also that the line we drew is not 12 inches long, but is shorter (the two ends are closer together)? That's why the voltages in a three phase system do not appear to add up. Lets make our ruler 240 inches long. If we bend it into the 120 degree angle and measure end-to-end, we will find the length to be about 208 inches, not 240! In a 120/208 three-phase system, each hot leg (phase) measures 120 volts to ground, BUT phase-to-phase measures 208 volts. This is true whether you measure A to B, B to C, or C to A. The math guys call this a vector sum. The vector is the angle at which the phases are in relation to each other (120 degrees) and the sum is the distance between the two bent ends (phases). To figure the phase-to-phase voltage, multiply the phase-to-neutral voltage by 1.73 (the square root of 3). Thus: 120 X 1.73 = 208, 277 X 1.73 = 480, etc. To figure the reverse, divide the phase-to-phase voltage by 1.73. Thus: 480 / 1.73 = 277, 208 / 1.73 = 120, etc. You trig people see how this relates to our triangle example using the cosine rule.
It should be noted that the use of the term phase above, as in "phase to phase" is not strictly correct, although a common usage. Each hot conductor in a 3-phase system is correctly called a "line", so the correct terminology would be "line to line", "line to neutral", etc.
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It seems that we have misunderstanding out side on the pol 4 wires 415 Voltage Ground, neutral and two hot or (Active), how do you get 120 from that without transformer?
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On 1/2/2013 2:28 AM, Grumpy wrote:

They don't use 120v in Australia.
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"Grumpy" wrote in message

Read my reply again we use 240 volts in Australia for household current and we use 415 volts for commercial and domestic 3 phase motors.
We do not use 110, 120, or 400 volts here.
We do not have mains transformers in the houses.
We run in either 240 volts or 415 volts (2 or 3 phase) into the homes, the extra phases only if require by load or for use of 3 phase motors.
By far the majority of homes only have 240 volts, as these days the mains coming in to a home have 80 amp cables coming in.
So 80 amps x 240 volts gives you around 19200 watts, quite a bit of power, almost 20 Kw.
I explained to you about the sub station transformers that give you 240 volts., read it again.
This 3 phase system is also used in most of Europe and UK with a slight variation in voltages.
Again a list of overseas voltages.
http://www.sensorcentral.com/worldsupport/standards12.php
If you do not understand then it is beyond you capabilities or are you just stirring?
=========================== From a previous note to Grumpy
The voltage is generated and here we use delta to wye transformers for power supply, which delivers 415 volts 3 phase and 240 volts single phase.
Delta-wye transformer
http://en.wikipedia.org/wiki/Delta-wye_transformer
In this case I guess they are quoting some US voltages, but the single phase to 3 phase is not doubled.
//Phase to neutral Phase to phase
120 208
230 400\\
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<DIV dir=ltr> <DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 14pt"> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>We have a power system that is 240 volts single phase or 415 volts 3 phase.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>(<STRONG><EM>The mains in the street have 4 wires,&nbsp; 3 x 240 volts (active) and a neutral. </EM></STRONG></FONT><STRONG><EM>&nbsp;<FONT size=4>Between each of the 240 volt wires is 415 volts and between the 240 volt active and the neutral is 240 volts. )</FONT></EM></STRONG></DIV> <DIV><STRONG><EM><FONT size=4>Problem is here you have 480/3/50 to get 240 each leg, this is what I am sking where are you getting 415 from?</FONT></EM></STRONG></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Most modern homes are supplied with an 80 amp 2 cable system IE 240 volts.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>If the current draw is greater than that and no 3 phase motors are installed then they can run 2 actives (phases) in and a neutral. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>There are no transformers in these homes for the power supply, they just run some things off one active and some things off the other active. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>If the load is too great for this 2 phase set up or you have one or more 3 phase motors then they will connect up 3 phases to your home (3 actives and a neutral) The power outlets are to be balanced over the 2 or 3 phases.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Power outlets in the homes are rated at 10 amps (2,400 watts) there are also available 15 amp outlets (3,600 watts) and 20 amp outlets (4,800 watts) although most homes do only have the 10 amp outlets. All outlets are earthed, and the current regulations require the earth and neutral to be joined in the fuse box. </FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>The way the power outlets are configures is that a 10 plug will fit into a 10 amp, a 15 amp and 20 amp outlet, a 15 amp plug will fit into a 15 amp and a 20 outlet while 20 amp plug will only fit into a 20 outlet.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>There are&nbsp; 30 amp outlets, but there are very rare and in general and equipment using a lot of power, is wired direct into an isolation switch and not an outlet.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>Here on the 240 volt systems the active is red or brown, the neutral is black or blue and the earth is green and yellow (striped).</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>--------------------------------</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4>That is what we have for most homes, however in a few parts of the country where there are quite some distances between the homes and power supplies they do have an alternative system. it is 480 volts and only one cable, it is called SWER (Single Wire Earth Return) at the home on a pole they mount a transformer to supply 240 volts to that home.</FONT></DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV> <DIV><FONT size=4></FONT>&nbsp;</DIV></DIV></DIV></BLOCKQUOTE></BODY></HTML>
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: 8bit
<P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt">&gt;&gt; (The mains in the street have 4 wires,<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>3 x 240 volts (active) and a neutral.<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>Between each of the &gt;&gt; 240 volt wires is 415 volts and between the 240 volt active and the neutral is 240 volts. )</FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpFirst><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">Problem is here you have 480/3/50 to get 240 each leg, this is what I am sking where are you</FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 10pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpLast><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt">getting 415 from?</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"><FONT size=4></FONT></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"><FONT size=4>You ask where the 415 volts comes from, well it comes from generators and transformers. That is street and sub station transformers, as we do not have main transformers in the homes.</FONT></FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4>You have been told the transformers are delta to wye (star) to produce 415 volts 3 phase and 240 volts single phase.</FONT></P> <DIV><FONT face="Times New Roman"><FONTstyle="FONT-SIZE: 12pt"></FONT></FONT>&nbsp;</DIV> <DIV><FONT face="Times New Roman"><FONT style="FONT-SIZE: 12pt">Delta-wye transformer<BR><BR></FONT></FONT><FONT style="FONT-SIZE: 12pt"><Ahref="http://en.wikipedia.org/wiki/Delta-wye_transformer"><FONT face="Times New Roman">http://en.wikipedia.org/wiki/Delta-wye_transformer</FONT></A><BR><BR></FONT><FONT face="Times New Roman"><FONT style="FONT-SIZE: 12pt">In this case I guess they are quoting some US voltages, but the single phase <BR>to 3 phase is not doubled.<BR><BR>Phase to neutral Phase tophase<BR><BR>120&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 208<BR><BR>230&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 400<BR><BR>--------------------------------------</FONT></FONT><BR><BR><FONT size=4>It would seem you cannot understand that generators can be made to generate almost any voltage and transformers can be made to produce almost any voltage.</FONT></DIV> <DIV><FONT size=4></FONT><BR><BR><BR></DIV><P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4></FONT></P></DIV></DIV></BODY></HTML>
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<P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt">&gt;&gt; (The mains in the street have 4 wires,<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>3 x 240 volts (active) and a neutral.<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>Between each of the &gt;&gt; 240 volt wires is 415 volts and between the 240 volt active and the neutral is 240 volts. )</FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpFirst><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New &#13;&#10;Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><FONT style="FONT-SIZE: 11pt">Problem is here you have 480/3/50 to get 240 each leg, this is what I am sking where are you</FONT></P> <P style="LINE-HEIGHT: 13pt; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 10pt 36pt; mso-list: l0 level1 lfo1" class=MsoListParagraphCxSpLast><SPAN style="FONT-FAMILY: ; mso-fareast-font-family: wingdings; mso-bidi-font-family: wingdings"><SPAN style="mso-list: ignore"><FONT face=Wingdings><FONT style="FONT-SIZE: 11pt">ุ</FONT></FONT><SPAN style="LINE-HEIGHT: normal; FONT-FAMILY: "><FONT face="Times New &#13;&#10;Roman"><FONT style="FONT-SIZE: 7pt">&nbsp; </FONT></FONT></SPAN></SPAN></SPAN><SPAN style="mso-spacerun: yes"><FONT style="FONT-SIZE: 11pt">&nbsp;</FONT></SPAN><FONT style="FONT-SIZE: 11pt">getting 415 from?</FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"><FONT size=4></FONT></FONT>&nbsp;</P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT style="FONT-SIZE: 11pt"><FONT size=4><EM>You ask where the 415 volts comes from, well it comes from generators and transformers. That is street and sub station transformers, as we do not have main transformers in the homes.</EM></FONT></FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4><EM><STRONG>UNDERSTANDABLE THANK YOU!</STRONG></EM></FONT></P> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4>You have been told the transformers are delta to wye (star) to produce 415 volts 3 phase and 240 volts single phase.</FONT></P> <DIV><FONT face="Times New Roman"><FONT style="FONT-SIZE: 12pt"></FONT></FONT>&nbsp;</DIV> <DIV><FONT face="Times New Roman"><FONT style="FONT-SIZE: 12pt">Delta-wye transformer<BR><BR></FONT></FONT><FONT style="FONT-SIZE: 12pt"><A href="http://en.wikipedia.org/wiki/Delta-wye_transformer"><FONT face="Times New &#13;&#10;Roman">http://en.wikipedia.org/wiki/Delta-wye_transformer</FONT></A><BR><BR></FONT><FONT face="Times New Roman"><FONT style="FONT-SIZE: 12pt">In this case I guess they are quoting some US voltages, but the single phase <BR>to 3 phase is not doubled.<BR><BR>Phase to neutral Phase to phase<BR><BR>120&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 208<BR><BR>230&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 400<BR><BR>--------------------------------------</FONT></FONT><BR><BR><FONT size=4>It would seem you cannot understand that generators can be made to generate almost any voltage and transformers can be made to produce almost any voltage.</FONT></DIV> <DIV><FONT size=4></FONT><BR><BR><BR></DIV> <P style="LINE-HEIGHT: 13pt; MARGIN: 0cm 0cm 10pt" class=MsoNormal><FONT size=4></FONT></P></DIV></DIV></BLOCKQUOTE></BODY></HTML>
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