<font face="arial" size="4">I wasn't going to say anything, but electric clocks off-grid? really???<br><br>Todd<br><br><br><br>On Monday, April 4, 2011 6:20pm, "Kent Osterberg" &lt;kent@coveoregon.com&gt; said:<br><br>&gt; Kris,<br>&gt; <br>&gt; Even with generators using an electronic governor, the frequency changes<br>&gt; with load. Also while inverters are stable their frequency is not as<br>&gt; accurate as utility power. Clocks that use the ac frequency as the time<br>&gt; standard will not work reliably when powered with off-grid power. Such<br>&gt; should be disclosed in any contract to install an off-grid power system.<br>&gt; <br>&gt; Kent Osterberg<br>&gt; Blue Mountain Solar<br>&gt; <br>&gt; <br>&gt; Kristopher Schmid wrote:<br>&gt; &gt; I have an off-grid client who tells me that his clocks lose about 1 minute<br>&gt; &gt; per hour while he is running his backup generator.  Has anyone seen this<br>&gt; &gt; before?  Do clocks use the zero crossing on a 60Hz wave for keeping time and<br>&gt; &gt; could a frequency discrepency in the generator cause this?<br>&gt; &gt;<br>&gt; &gt; My thanks to the brain trust...<br>&gt; &gt;<br>&gt; &gt; Kris<br>&gt; &gt;<br>&gt; &gt; Legacy Solar, LLC<br>&gt; &gt; 864 Clam Falls Trail<br>&gt; &gt; Frederic, WI 54837<br>&gt; &gt; 715-653-4295<br>&gt; &gt; solman@legacysolar.com<br>&gt; &gt; www.legacysolar.com<br>&gt; &gt;<br>&gt; &gt; _______________________________________________<br>&gt; &gt; List sponsored by Home Power magazine<br>&gt; &gt;<br>&gt; &gt; List Address: RE-wrenches@lists.re-wrenches.org<br>&gt; &gt;<br>&gt; &gt; Options &amp; settings:<br>&gt; &gt; http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br>&gt; &gt;<br>&gt; &gt; List-Archive:<br>&gt; http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br>&gt; &gt;<br>&gt; &gt; List rules &amp; etiquette:<br>&gt; &gt; www.re-wrenches.org/etiquette.htm<br>&gt; &gt;<br>&gt; &gt; Check out participant bios:<br>&gt; &gt; www.members.re-wrenches.org<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt;<br>&gt; _______________________________________________<br>&gt; List sponsored by Home Power magazine<br>&gt; <br>&gt; List Address: RE-wrenches@lists.re-wrenches.org<br>&gt; <br>&gt; Options &amp; settings:<br>&gt; http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br>&gt; <br>&gt; List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br>&gt; <br>&gt; List rules &amp; etiquette:<br>&gt; www.re-wrenches.org/etiquette.htm<br>&gt; <br>&gt; Check out participant bios:<br>&gt; www.members.re-wrenches.org<br>&gt; <br>&gt; <br></font><br><br><br>Sent from Finest Planet WebMail.<br>