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<p><span style="font-size: 12pt;">William,</span></p>

<p><span style="font-size: 12pt;">I'm planning to use a 48 V battery vent fan, turned around backwards, to blow air into the box. </span></p>

<p><span style="font-size: 12pt;">Thank you,</span></p>

<p><span style="font-size: 12pt;">Drake</span></p>

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<p><em>Drake Chamberlin</em></p>

<p><em>Athens Electric LLC</em></p>

<p><em>Ohio Electrical Contractor’s License 44810</em></p>

<p><em>NABCEP Certified PV Installation Professional</em></p>

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<p id="reply-intro">On 2023-12-13 11:25, William Miller via RE-wrenches wrote:</p>

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<div dir="auto">Drake:</div>

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<div dir="auto">I tried running 48 VDC muffin fans on battery voltage. They failed. I switched to a Dc-Dc converter (12 or 24, can't remember) from digi-key and problem solved. </div>

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<div dir="auto">Point being battery voltage ranges may be too extreme for some components. <br clear="all" /><br clear="all" />

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<div class="v1gmail_signature" dir="ltr"><br />William Miller<br />Miller Solar.com<br />805-438-5600<br /><a href="http://www.millersolar.com" target="_blank" rel="noopener noreferrer">www.millersolar.com</a></div>

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<div class="v1gmail_attr" dir="ltr">On Wed, Dec 13, 2023 at 8:08 AM Drake Chamberlin via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>

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<div style="margin: 0px; padding: 0px; font-family: monospace;"><span style="font-size: 12pt; font-family: monospace;">Hello,</span></div>

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<div style="margin: 0px; padding: 0px; font-family: monospace;"><span style="font-size: 12pt; font-family: monospace;">Does anyone know of a 48 VDC temperature sensing relay? I need to use one to control a fan in a 48 V battery bank, to bring in cold air when the bank gets too hot from the wood heating system in the house. </span></div>

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<div style="margin: 0px; padding: 0px; font-family: monospace;"><span style="font-size: 12pt; font-family: monospace;">The relay needs to operate with the 48 VDC power supply and disconnect a small current with 48 VDC contacts.</span></div>

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<div style="margin: 0px; padding: 0px; font-family: monospace;"><span style="font-size: 12pt; font-family: monospace;">Thank you,</span></div>

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<div style="margin: 0px; padding: 0px; font-family: monospace;"><span style="font-size: 12pt; font-family: monospace;">Drake </span></div>

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<p style="font-family: monospace;"><em style="font-family: monospace;">Drake Chamberlin</em></p>

<p style="font-family: monospace;"><em style="font-family: monospace;">Athens Electric LLC</em></p>

<p style="font-family: monospace;"><em style="font-family: monospace;">Ohio Electrical Contractor's License 44810</em></p>

<p style="font-family: monospace;"><em style="font-family: monospace;">NABCEP Certified PV Installation Professional</em></p>

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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></div>

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