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<div class="moz-cite-prefix"><br>
Since grid-tie inverters sell back with a power factor of 1, the
load ~should~ be entirely resistive and<br>
not inductive or capacitive so a appropriately rated relay
contacts ~should~ be fine.<br>
<br>
Except maybe if the inverter is designed to supply VARs like the
last Solar-Pro magazine talks about.<br>
(haven't actually read that article yet but I assume that's what
it is about)<br>
<br>
Of course, others may have different experiences so I would listen
to them.<br>
<br>
I prefer to use a somewhat over-rated relay.<br>
<br>
boB<br>
<br>
<br>
On 6/16/2014 7:05 AM, Drake wrote:<br>
</div>
<blockquote
cite="mid:20140616140627.699E83DC05E@homiemail-a92.g.dreamhost.com"
type="cite">
Hello Wrenches,<br>
<br>
Do the relays that break the current from the direct grid tie
inverters,
in AC coupled systems, need to be motor rated or can they simply
be rated
for the amperage of the inverter output? How inductive is the
current
between the two inverter systems? Will the current tend to jump
the
contacts on a non motor rated relay, or burn them out
prematurely?<br>
<br>
Thanks,<br>
<br>
Drake <br>
<br>
<br>
<a moz-do-not-send="true" name="_MailAutoSig"></a>Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a moz-do-not-send="true" href="http://athens-electric.com/">http://athens-electric.com/</a><br>
</blockquote>
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