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<p>Thank you, I did find their website and seeing if it has a
chance. Chris</p>
<div class="moz-cite-prefix">On 8/22/2025 8:37 PM, Kirk Herander via
RE-wrenches wrote:<br>
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<div dir="auto">There is a company called Savant, I’ve seen their
individual Smart breakers installed in sqd Panels - they are
individual smart breakers. A single pole breaker would actually
take up two slots one for the OCPD itself, and one for the sp
relay. Don’t know exactly how it operates, but I know you don’t
have to buy an entire smart panel for it to work.</div>
<div dir="auto"><br>
</div>
<div dir="auto">As discussed on this forum, also, there are also
RF transmitter/ receivers, which can do what you ask. Used them
to disconnect an inverter from a common AC bus when the
gennie turns on.</div>
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<div dir="ltr" class="gmail_attr">On Fri, Aug 22, 2025 at
8:21 PM Chris Sparadeo via RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
moz-do-not-send="true" class="moz-txt-link-freetext">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
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<div dir="auto">Hi Chris,</div>
<div dir="auto"><br>
</div>
<div dir="auto">I’m wondering if a load management device
like this could be helpful? However, it does not discern
between grid presence and island mode, so it might not fit
the bill. </div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div><a
href="https://www.getstepwise.com/product?gad_source=1&gad_campaignid=22363404421&gclid=Cj0KCQjwqqDFBhDhARIsAIHTlkub687mJZYb6g0nIR33X1eA2FVY3bMc_zBxMr44IEl5a7QenVljhUgaArKeEALw_wcB"
target="_blank" moz-do-not-send="true">https://www.getstepwise.com/product?gad_source=1&gad_campaignid=22363404421&gclid=Cj0KCQjwqqDFBhDhARIsAIHTlkub687mJZYb6g0nIR33X1eA2FVY3bMc_zBxMr44IEl5a7QenVljhUgaArKeEALw_wcB</a></div>
<br>
</div>
<div dir="auto">Quick caveat that shedding an HVAC unit
potentially mid cycle is not ideal for the health of that
unit…but neither is an overload and subsequent power
failure. </div>
<div dir="auto"><br>
</div>
<div dir="auto">I do know that Lumin Smart sells remote CTs
for grid detection. Might be worth a call to them to see
if this fairly inexpensive product can pair with a remote
contactor to open the HVAC circuit. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Best of luck! </div>
<div dir="auto"><br>
</div>
<div dir="auto">-Chris </div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Aug 22, 2025
at 3:54 PM Christopher Warfel via RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">We
installed a 4kW Outback multimode system about 8 years
ago. An <br>
electrician came in afterwards and installed 3 heat
pumps on the battery <br>
backed up power panels. The Outback inverter
disconnected on load every <br>
time there was a power outage. The electrician really
messed up and is <br>
long gone. Also found out did not pull a permit. But I
digress. We <br>
managed to move two of the heat pump circuit breakers
to the utility <br>
panel, so no longer on the battery backed up power
panels. The third <br>
heat pump is the problem as it is located in an
apartment building <br>
remote from the main house. The whole apartment
subpanel, including the <br>
heat pump load is interconnected to the
"main" battery backed up power <br>
panel in the home.<br>
<br>
A master electrician and I are considering how to shed
the apartment <br>
heat pump in a power outage. We cannot easily run a
separate circuit to <br>
the apartment building to pick up this load. We have
considered a smart <br>
panel, but the cost seems high for one circuit. Does
anyone know of a <br>
power line product of RF product or similar that could
operate this <br>
breaker when the main service panel loses power? I
have been <br>
unsuccessful over months of sporadic research.<br>
<br>
Thanks in advance.<br>
<br>
<br>
Chris<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
-- Christopher Warfel, PE ENTECH Engineering, Inc. PO
Box 871, Block <br>
Island, RI 02807 (401) 447-5773<br>
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<pre class="moz-signature" cols="72">--
Christopher Warfel, PE
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
(401) 447-5773</pre>
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