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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Bob,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Looks very professional! Quite a craftsperson you are.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>George<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> 450-bounces@lists.vhfwiki.com [mailto:450-bounces@lists.vhfwiki.com] <b>On Behalf Of </b>Bob<br><b>Sent:</b> Sunday, March 10, 2013 7:13 PM<br><b>To:</b> 450<br><b>Subject:</b> [450] Fwd: Today's project<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><p class=MsoNormal>Having acquired the 100 amp switching supply, next step is to make it useable in the shack. Metering, power connections, etc. aren't part of the package when you get one of these things. Having a "temporary shack", I needed a way to add these things without building it all into the shelf for now. Further, I needed to do it in a way that would allow me to use it at the full 100 amps if necessary, so it had to be heavy duty. Here is how I did it.<br><br><img width=411 height=273 id="_x0000_i1025" src="cid:image002.jpg@01CE1E3B.98091980" alt="Inline image 1"><o:p></o:p></p></div><p class=MsoNormal>Two meters nestled nicely into the front of an old speaker cabinet.<br><br><img width=411 height=273 id="_x0000_i1026" src="cid:image004.jpg@01CE1E3B.98091980" alt="Inline image 2"><o:p></o:p></p></div><p class=MsoNormal>The cutting didn't go to badly this time!<br><br><img width=411 height=240 id="_x0000_i1027" src="cid:image006.jpg@01CE1E3B.98091980" alt="Inline image 3"><o:p></o:p></p></div><p class=MsoNormal>5/16 binding posts. The two on top are positive, the two on the bottom are negative. I still have to mark them, and make a cover for the back for after all lines are connected.<br><br><img width=410 height=272 id="_x0000_i1028" src="cid:image008.jpg@01CE1E3B.98091980" alt="Inline image 4"><o:p></o:p></p></div><p class=MsoNormal>Here are the binding posts from the inside, keep in mind all connections need to support the 100 amp concept.<br><br><img width=411 height=311 id="_x0000_i1029" src="cid:image010.jpg@01CE1E3B.98091980" alt="Inline image 5"><o:p></o:p></p></div><p class=MsoNormal>Overall, looks fairly professional for junk parts (rubber feet even!)....only the meters were purchased, $12.00 each online.<br><br><img width=411 height=506 id="_x0000_i1030" src="cid:image012.jpg@01CE1E3B.98091980" alt="Inline image 6"><o:p></o:p></p></div><p class=MsoNormal>You can see here the #4 cable in place to plug into the output ports of the supply which will be mounted to the four pads on top. They route into the box via teflon bushings.<br><br><img width=411 height=273 id="_x0000_i1031" src="cid:image014.jpg@01CE1E3B.98091980" alt="Inline image 7"><o:p></o:p></p></div><p class=MsoNormal>Another view of the top. The extra bushing is to route the case ground wire.<br><br><img width=411 height=273 id="_x0000_i1032" src="cid:image016.jpg@01CE1E3B.98091980" alt="Inline image 8"><o:p></o:p></p></div><p class=MsoNormal>An overview of the inside. Note: everything giant and bolted for power connections...those lugs to either side of the shunt (center) were formerly used to connect the 1/0# ground wire to my towers at the old shack.<br><br><img width=411 height=273 id="_x0000_i1033" src="cid:image018.jpg@01CE1E3B.98091980" alt="Inline image 9"><o:p></o:p></p></div><p class=MsoNormal>More overview from back...<br><br><img width=411 height=273 id="_x0000_i1034" src="cid:image020.jpg@01CE1E3B.98091980" alt="Inline image 10"><o:p></o:p></p></div><p class=MsoNormal>....and from the front.....<br><br><img width=411 height=246 id="_x0000_i1035" src="cid:image022.jpg@01CE1E3B.98091980" alt="Inline image 11"><o:p></o:p></p></div><p class=MsoNormal>Here is the shunt set up....the main reason this needed a box to begin with. This must be well isolated and firmly mounted as the entire thing is "hot", both polarity AND temperature. Without it, there would be no current measurement.<br><br><img width=411 height=273 id="_x0000_i1036" src="cid:image024.jpg@01CE1E3B.98091980" alt="Inline image 12"><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>A close up of the shunt and it's mounting.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>So there it is. Still some finishing touches to do, maybe meter light, maybe a few switches, but overall ready to mount the Powermax 100 amp supply to and put into service. Hope you enjoyed the tour!<o:p></o:p></p></div><p class=MsoNormal>Bob N1UJS<o:p></o:p></p><div><div><div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p></div></div></div></div></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>