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<p>I have concerns as well, because I too have been considering the
SolArk for upcoming larger designs. I regularly expect the
builders to test the system and expose any problems before the
owners move in. It should be able to run any properly operating
120 v equipment there is. Having said that, I once had a
contractor's air compressor not run on one of my systems. It was
an archaic monster belt drive thing, and when I checked it, it had
a missing starting cap, and a ground fault. So no, the inverter
should not have to operate faulty equipment either. <br>
</p>
<p>I have never had to use a balancing transformer before on any of
my systems. The Magnum 120/240 vac PAE inverters generally will
run everything 120 I've ever thrown at them, have full 240 in/out,
but they're rated at 1/3 the power of the Solark. So something is
definitely wrong; shutdowns are not acceptable. I hope Solark
addresses this immediately.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 2/3/21 10:47 PM, Jerry Shafer wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMUFgmVy=d9KS4O1wE8bxaT8=_+zSi5PHbX7=CzsMip+omCk_g@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Maybe its just me but if an off grid inverter
can't start up a 120 vac compressor l might want to look
elsewhere. I have the old FX inverters start up and run massive
bandsaw while homes were being built. Radians running everything
from well pumps to sewer pumps all while off grid all without
additional transformers or soft start controllers. I have
systems in Honolulu that have 5 AC multi ton units all living
just fine with two Radians and no additional transformers. Its
just a little concerning that load imbalance was not considered
with this inverter manufacture, and maybe they did. KISS! not
more complicated
<div dir="auto">Jerry</div>
<div dir="auto">NABCEP PV inspector</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Feb 3, 2021, 1:10 PM <a
href="mailto:larry@starlightsolar.com"
moz-do-not-send="true">larry@starlightsolar.com</a> <<a
href="mailto:larry@starlightsolar.com"
moz-do-not-send="true">larry@starlightsolar.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word;line-break:after-white-space">Amos,
<div><br>
</div>
<div>When using it in balancing mode, as seen in the
attached image, the PSX will provide 120Vac from either
leg and the inverter output should stay balanced. A 240Vac
circuit from the main panel goes to the PSX then to a sub
panel and any 240Vac loads stay on the main panel.<br>
<div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">
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<div><br>
<br>
<span>Larry Crutcher</span><br>
<span>Starlight Solar Power Systems</span><br>
</div>
</div>
</div>
<br>
</div>
<img
id="m_-85519487360657735876C08EDE-4531-475A-8DC5-99807339150C"
src="cid:002A0D9B-1695-4E7F-AE96-9E638D09A1B3"
moz-do-not-send="true" width="532" height="480"><br
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<br>
</div>
<div><br>
<div>On Feb 3, 2021, at 1:49 PM, Amos Post <<a
href="mailto:integrityenergy101@gmail.com"
target="_blank" rel="noreferrer"
moz-do-not-send="true">integrityenergy101@gmail.com</a>>
wrote:</div>
<br>
<div>
<div
style="word-wrap:break-word;line-break:after-white-space">We
have had this issue with a recent installation.
It\u2019s a new off-grid house build, and so not many
loads to speak of yet, except mainly power tools.
The Solark 12K will not start any of: portable air
compressor, table saw, and sometimes struggles with
a miter saw, which are each 16amps or less at 120V,
but I have measured close to 50amps start up for the
air compressor and table saw. The air compressor
and table saw are 1.5HP each. What helps is if the
motors are warmed up, or putting another load on the
other leg to balance the inverter\u2019s output.
<div><br>
</div>
<div>Was thinking we would install a couple of
dedicated 120V outlets for \u201chigh-current\u201d 120V
loads with a PSX-240, stepping down the inverter's
240 to 120. My understanding is this will solve
the issue for starting these loads, but not sure
if we might run into issues with inbalance down
the road... Would be curious to know if there\u2019s
another way to balance all of the house loads
using the PSX-240?..<br>
<div>
<span><span
id="m_-855194873606577358cid:BB04EA26-2543-45F1-9D19-B078F743C9C6"><IE
LOGO 150x78.jpg></span></span><br
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Amos Post</span><br
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<blockquote type="cite">
<div>On Feb 3, 2021, at 2:41 PM, <a
href="mailto:larry@starlightsolar.com"
target="_blank" rel="noreferrer"
moz-do-not-send="true">larry@starlightsolar.com</a>
wrote:</div>
<br>
<div>
<div
style="word-wrap:break-word;line-break:after-white-space">If
it turns out to be true, could you simply
add the Outback PSX-240 to balance the
loads?<br>
<div>
<div
style="font-family:Helvetica;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-east-asian:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word;line-break:after-white-space">
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<div><br>
<span>Larry Crutcher</span><br>
<span>Starlight Solar Power
Systems</span><br>
</div>
</div>
</div>
<br>
</div>
<br
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<br>
</div>
<div><br>
<div>On Feb 3, 2021, at 10:52 AM, Nick A
Lucchese <<a
href="mailto:lucchesesolar@me.com"
target="_blank" rel="noreferrer"
moz-do-not-send="true">lucchesesolar@me.com</a>>
wrote:</div>
<br>
<div>
<div>Good morning Wrenches,<br>
<br>
I\u2019ve strongly been considering using
the SolArk 12K unit for awhile but
have heard from a few folks that
there can be somewhat frequent
issues with the inverter shutting
down from line to line imbalance. As
little as 1400 watts? I could see
where these instances would be
minimized with attention to detail
on balancing all the loads but if\u2019s
as little as a delta of 1400 watts
that might occur with something as
innocent as a toaster oven. Seems
like it would also be less of an
issue in a grid back up or AC
coupled scenario but for off grid
I\u2019d be bummed to be getting calls
every couple weeks from an off grid
client that trusted me to offer the
right equipment.<br>
<br>
How much of an issue is this? Is it
getting exaggerated? Those that have
NOT had this happening was it on a
full time off grid site?<br>
<br>
Has it happened less on sites using
the "Limited to Home\u201d mode? I have
an upcoming project that was going
to be setup with a couple Radians in
HBX mode and my thought was perhaps
it might be an ideal solution there
but if the continuity of electrical
service was going to be provided
mainly through batteries and
inverting and not through the pass
through relays the majority of the
time then the site might likely
experience this issue with imbalance
shutdowns.<br>
<br>
There are many attractive features
of the SolArk and I really like the
thought of taking advantage of the
185 amp DC charger versus the
Radian\u2019s 115 but I\u2019m kind of
thinking the risks may outweigh the
benefits if these shutdowns occur
even once every couple of months.
Any of you have a long enough
history with them to chime in with
your observations? Are they most
reliable for AC coupled with backup
rather than off grid or the \u201cLimited
to Home\u201d mode?<br>
<br>
Thanks for your time, <br>
Nick A Lucchese<br>
<br>
</div>
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