http://wiki.xtronics.com/index.php?title=Special:RecentChanges&feed=atom Transwiki - Recent changes [en] 2012-05-16T16:10:17Z Track the most recent changes to the wiki in this feed. MediaWiki 1.15.5-2squeeze4 http://wiki.xtronics.com/index.php?title=Wire-Gauge_Ampacity&diff=5887&oldid=prev Wire-Gauge Ampacity 2012-05-15T14:31:07Z <p><span class="autocomment">Why was &#39;hot&#39; Black in House Wiring?:&#32;</span> </p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 14:31, 15 May 2012</td> </tr> <tr><td colspan="2" class="diff-lineno">Line 697:</td> <td colspan="2" class="diff-lineno">Line 697:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Why was 'hot' Black in House Wiring? ===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Why was 'hot' Black in House Wiring? ===</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Black used to be the colour of the live wire in ordinary cables in Europe (<del class="diffchange diffchange-inline">is </del>it still as it is in the USA). This is because the very first power wires were insulated by strips of linen soaked with [http://en.wikipedia.org/wiki/Gutta-percha guttappercha] ( a good organic insulator) and natural rubber filled with soot. Hence: black colour for the dangerous one. The neutral wires weren't insulated at all, just bare copper wire. Later they got a grey coating (less soot in them), still later blue as artificial dyes came up in Europe. &nbsp;</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Black used to be the colour of the live wire in ordinary cables in Europe (<ins class="diffchange diffchange-inline">as </ins>it still as it is in the USA). This is because the very first power wires were insulated by strips of linen soaked with [http://en.wikipedia.org/wiki/Gutta-percha guttappercha] ( a good organic insulator) and natural rubber filled with soot. Hence: black colour for the dangerous one. The neutral wires weren't insulated at all, just bare copper wire. Later they got a grey coating (less soot in them), still later blue as artificial dyes came up in Europe. &nbsp;</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==== Mains wire codes in Germany ====</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==== Mains wire codes in Germany ====</div></td></tr> <tr><td colspan="2" class="diff-lineno">Line 715:</td> <td colspan="2" class="diff-lineno">Line 715:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In older three phase cables the grey lead was also black so when installing cables, it was difficult to determine the direction of rotation. In cables older than, say, 60 years the PE lead was red, in Switzerland even more recently.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>In older three phase cables the grey lead was also black so when installing cables, it was difficult to determine the direction of rotation. In cables older than, say, 60 years the PE lead was red, in Switzerland even more recently.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Blue may be (and is frequently) used for any purpose, especially for switched power, can't be sure that it's neutral.&nbsp; Other colours may be used for any purpose. Green/yellow may not be used for anything else but PE. &nbsp;</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Blue may be (and is frequently) used for any purpose, especially for switched power, can't be sure that it's neutral.&nbsp; Other colours may be used for any purpose. Green/yellow may not be used for anything else but PE.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Other older standards from Europe ===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Other older standards from Europe ===</div></td></tr> <!-- diff generator: internal 2012-05-16 16:10:17 --> </table> 96.45.208.254 http://wiki.xtronics.com/index.php?title=Heater_Burn-out_Detectors&diff=5882&oldid=prev Heater Burn-out Detectors 2012-05-09T23:06:59Z <p>Reverted edits by <a href="/index.php/Special:Contributions/62.61.171.15" title="Special:Contributions/62.61.171.15">62.61.171.15</a> (<a href="/index.php?title=User_talk:62.61.171.15&amp;action=edit&amp;redlink=1" class="new" title="User talk:62.61.171.15 (page does not exist)">Talk</a>) to last revision by <a href="/index.php?title=User:Karl&amp;action=edit&amp;redlink=1" class="new" title="User:Karl (page does not exist)">Karl</a></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 23:06, 9 May 2012</td> </tr> <tr><td colspan="2" class="diff-lineno">Line 3:</td> <td colspan="2" class="diff-lineno">Line 3:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Single and 3-phase ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Single and 3-phase ==</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>== Stalled Motor Detector&lt;br /&gt; Self powered (<del class="diffchange diffchange-inline">cvxcxcvxWhen </del>current is above 5A) ==</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>== Stalled Motor Detector&lt;br /&gt; Self powered (<ins class="diffchange diffchange-inline">When </ins>current is above 5A) ==</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>BO Detector Series Burned out heater elements cost time and money to diagnose. Don't let them cost you down time. Get the Burnout detector! Unique self-powered design saves complexity and wiring time. The burnout detector works by sensing the AC current and activating at the specified set point. Sensing a repeatable specific trip-point, allows the burnout detector to monitor multiple parallel connected heater elements. The BO series can detect stalled motors by sensing the out of range current. In 3-phase operation (using a delta or 4-wire-Y configuration), of the Transtronics Burnout detector allows one sensor to monitor all three phases. Upon detection, it lights the LED and optionally activates an output. Four basic output versions are available: LED lamp only, open collector, Triac and form C relay. Options include: large pass opening, adjustable set-point and remote mounting LED.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>BO Detector Series Burned out heater elements cost time and money to diagnose. Don't let them cost you down time. Get the Burnout detector! Unique self-powered design saves complexity and wiring time. The burnout detector works by sensing the AC current and activating at the specified set point. Sensing a repeatable specific trip-point, allows the burnout detector to monitor multiple parallel connected heater elements. The BO series can detect stalled motors by sensing the out of range current. In 3-phase operation (using a delta or 4-wire-Y configuration), of the Transtronics Burnout detector allows one sensor to monitor all three phases. Upon detection, it lights the LED and optionally activates an output. Four basic output versions are available: LED lamp only, open collector, Triac and form C relay. Options include: large pass opening, adjustable set-point and remote mounting LED.</div></td></tr> <!-- diff generator: internal 2012-05-16 16:10:17 --> </table> Karl http://wiki.xtronics.com/index.php?title=Gerbview&diff=5873&oldid=prev Gerbview 2012-05-09T18:30:34Z <p><span class="autocomment">Bittele.com:&#32;</span> </p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 18:30, 9 May 2012</td> </tr> <tr><td colspan="2" class="diff-lineno">Line 220:</td> <td colspan="2" class="diff-lineno">Line 220:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>===Bittele.com&nbsp; ===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>===Bittele.com&nbsp; ===</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://www.bittele.com/</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://www.bittele.com/</div></td></tr> <tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Taiwan laminate </del>- <del class="diffchange diffchange-inline">fails to specify Tg -&nbsp; or IPC-4101C</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Provides good quality in affordable cost. Uses FR4 Tg170(S1000</ins>-<ins class="diffchange diffchange-inline">2) and FR4(S1141). Complies with IPC600F standard.</ins></div></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== San Francisco Circuits ===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== San Francisco Circuits ===</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://www.sfcircuits.com &nbsp;</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* http://www.sfcircuits.com &nbsp;</div></td></tr> <!-- diff generator: internal 2012-05-16 16:10:17 --> </table> 184.154.8.101