https://wiki.cs.earlham.edu/index.php?action=history&feed=atom&title=Hotwater-wattnode 2026-07-24T05:37:46Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wiki.cs.earlham.edu/index.php?title=Hotwater-wattnode&diff=5779&oldid=prev 2007-04-18T18:32:20Z

<p><span class="autocomment">Monitoring Setup</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:32, 18 April 2007</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3">Line 3:</td> <td colspan="2" class="diff-lineno">Line 3:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Monitoring Setup==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Monitoring Setup==</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>We mounted the WattNode <del style="font-weight: bold; text-decoration: none;">securly </del>next to the breaker box in the Miller Farmhouse basement.  With main breaker turned off, we snapped two current transformers around the two hot 120 VAC wires heading to the hot water heater.  We then installed a conduit in the side of the breaker box so we could connect the leads from the current transformers to the WattNode, and run wires to supply in phase energy to the WattNode.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>We mounted the WattNode <ins style="font-weight: bold; text-decoration: none;">securely </ins>next to the breaker box in the Miller Farmhouse basement.  With main breaker turned off, we snapped two current transformers around the two hot 120 VAC wires heading to the hot water heater.  We then installed a conduit in the side of the breaker box so we could connect the leads from the current transformers to the WattNode, and run wires to supply in phase energy to the WattNode.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>http://cs.earlham.edu/~green-science/album/photo.php?file=/WattNode%20Installation/wattnode.jpg</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>http://cs.earlham.edu/~green-science/album/photo.php?file=/WattNode%20Installation/wattnode.jpg</div></td></tr> <!-- diff cache key wiki:diff:1.41:old-3071:rev-5779:php=table --> </table>

Ehrennagel https://wiki.cs.earlham.edu/index.php?title=Hotwater-wattnode&diff=3071&oldid=prev 2007-04-18T18:31:29Z

<p></p> <p><b>New page</b></p><div>==Energy Monitoring Primary Goal==<br /> With the [http://wiki.cs.earlham.edu/index.php/Wattsup-vs-wattnode test run] of the WattNode on a 120 VAC system under our belt, we decided to install a WattNode on the 240 VAC line powering the Miller Farm electric water heater to see if actual energy usage was in line with our [http://wiki.cs.earlham.edu/index.php/Hotwater-audit estimates.]<br /> <br /> ==Monitoring Setup==<br /> We mounted the WattNode securly next to the breaker box in the Miller Farmhouse basement. With main breaker turned off, we snapped two current transformers around the two hot 120 VAC wires heading to the hot water heater. We then installed a conduit in the side of the breaker box so we could connect the leads from the current transformers to the WattNode, and run wires to supply in phase energy to the WattNode.<br /> <br /> http://cs.earlham.edu/~green-science/album/photo.php?file=/WattNode%20Installation/wattnode.jpg</div>

Ehrennagel