This winter we were fixing up a system with a fronius primo inverter and
adding rapid shutdown. Fronius very much recommended against using Tigo.
They recommended we use Fire Raptors. They have been working fine.
Cheers,
Dave
On Thu, May 23, 2024, 8:27 PM Chris Sparadeo via RE-wrenches <
t;> Maverick Solar Enterprises, Inc.
>> • Solar Commander Remote Power
>> • SunFlow Systems Cathodic Protection
>> maver...@mavericksolar.com
>> 512-460-9825
>>
>>
>>
>> On Apr 25, 2024, at 5:57 PM, Dave Tedeyan via RE-wrenches <
>>
setpoints and a non-temperature compensated voltage for the other one?
Thanks!
-Dave
On Wed, Apr 24, 2024, 3:33 PM Dave Tedeyan wrote:
> Maverick and Steve,
>
> Thank you much for pointing me in the right direction here. I was looking
> at the Radian setting and not the Mate3S settings.
gt;> years and most of them are still viable.
>>
>> As a precaution, For AC coupling, I also install a high battery AUX port
>> controlled relay that drops the AC coupling input circuit.
>>
>> Thank you,
>>
>> Maverick
>>
>> Maverick Brown
&g
tps://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (607) 270-0370
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> Check o
> around is a good one. NABECP I THINK, has some leads on firms for this.
>
>
> Chris
> On 3/10/2024 6:23 PM, Dave Tedeyan via RE-wrenches wrote:
>
> Hi All,
>
> I have an insurance question and am very curious about how others deal
> with this, or don't. People will so
t putting ungrounded fears in
our head?
Thanks for your thoughts.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineer
Another one out there that is worth looking at is MT Solar.
Cheers,
Dave
On Fri, Mar 8, 2024, 5:51 PM Kent via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Jeremy,
>
> I think the Solar RacksWorks TPMs are virtually identical to the DPW TPMs.
> My go to TPM is General Specialties
>
that would want to have these older panels and actually use them
for installation. These are in the Maryland region, but would be happy to
have any contacts.
--
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slatervi
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9:07 AM Jay via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> I think that using a megger etc to test the panels and wires is what I’d
>> do before I yanked out all the
>> Wires.
>>
>> They are not that expensive anymore and maybe possi
on this one, ideally, I would know
that replacing the DC wires will fix it. So I am curious if people have
done this, to still find that the issue was something internal to the
inverter.
Thanks!
-Dave
--
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
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[image: Logo] <h
ue for the Envy app also.
>
> PS I found out the Guardian gateway will not recognise a newer "mesh" wifi
> signal. Fortress is working on a fix, but the physical LAN connection does
> work.
>
> On Thu, Nov 30, 2023 at 11:28 AM Dave Tedeyan
> wrote:
>
>>
k, try the
> other:
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Mine was a roof mount. We had very few SolarWorld projects. In fact, this
might be our only one.
On Fri, Nov 10, 2023, 8:10 AM Chris Schaefer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> I'd be curious to know of the connector failures y'all have experienced,
> were the majority
Pay optional member dues here: http://re-wrenches.org
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> There are two list archives for searching. When o
hanks,
>> Kienan
>>
>> *Green-Go Solar Wholesale Distribution LLC*
>>
>> *kienan@dist.solar*
>>
>> *(801) 631-5584(Cell)*
>>
>> *www.distribution.solar*
>>
>> On Oct 9, 2023, at 8:33 AM, Dave Tedeyan via RE-wrenches <
>> re-wren
ammer
The cordless drill is tempting because I already have a bunch of DeWalt
equipment, and it would be nice to avoid needing a generator or some very
long extension cords.
Thanks!
-Dave
--
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
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>
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him
. If not, its not
a big deal, since these batteries are just for short term backup, so if the
inverter just cycle off and on when the batteries are mostly full, that
will be okay. But it would be nice if I can set up the frequency control.
Cheers,
Dave
--
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gt; *Owner|Principal, VT Solar, LLC*
>
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>
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>
>
> On Thu, Jun 8, 2023 at 2:33 PM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Also being in NYS, I have been familiar with this
s:
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> Michael Morningstar
>
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> Morningsta
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slatervill
,
Dave
On Thu, Feb 23, 2023 at 1:36 PM Dave Tedeyan
wrote:
> The customer has already had the utility come out to take a look. He says
> they had him turn off the solar, and then they measured 246V at the
> transformer and then said it's not their problem. He was going to try to
> get t
e is a drop and how much. Now turn off everything and
> power up the solar again watch the voltage at the meter if it climbs up and
> close to limit it might be the feeders. It's all process of elimination.
> Lots of fun
>
>
> On Thu, Feb 23, 2023, 9:03 AM Dave Tedeyan via RE-wren
issues if the house is at 260V during times of high
solar production?
Thanks!
-Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineer
-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
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>
> List r
experiences when
there is consumption CT's but no production CT's.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/
esn't work, try the
> other:
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the Locus
meter and put in the Vision meter?
Thanks!
-Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (6
stallation Professional
> ---
>
>
>
> On 2022-10-07 11:42, Dave Tedeyan via RE-wrenches wrote:
>
> Hi All,
>
> I've got someone who wants to tie their off-grid system with a Magnum
> inverter (which I think is a 4024 PAE inverter) to the grid. Since the
> Magnum inv
.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (607) 288-2898
n ADDA ad0812ub-f71. I found one
seller on ebay who has a few of these, so maybe I should just get them?
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: ww
/charger also
takes PV power directly and goes for $1250. And their 48V 100AH battery is
only $1500. I am curious if anyone has used this stuff and if it is
actually legit.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him
PVS5? The
Enphase CT is rated at 0.5V at 200A (at least that is what it says on the
CT label). I would prefer to just get a Sunpower production CT, but I am
not sure that I can being that we are no longer a Sunpower dealer.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave T
them
> statically remain in location without the tape, the loop will prevent
> drooping and if properly located rest on the rail.
> Jerry
>
> On Wed, Jun 29, 2022 at 1:07 PM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi all,
>
tor
>
> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi All,
>>
>> I just got some of the Qcell 360w AC modules that have the Enphase
>> microinverter factory applied to the back. The module is
not sag enough to touch the roof, or is the tape the only thing
> preventing the leads from touching the roof?
>
> Jason Szumlanski
> Florida Solar Design Group
>
>
>
>
> On Thu, Jun 2, 2022 at 9:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.r
,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (607) 288-2898
to activate the SPS. Can anyone here verify this? Have you done
this, and does it work as expected with no extra hardware needed?
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Itha
>>
>> Danny Young
>>
>> Engineering Team Lead
>> Solar Energy Solutions
>>
>> Lexington | Louisville | Bloomington | Cincinnati | Evansville |
>> Indianapolis
>>
>> 513-448-5176 (mobile)
>>
>> 877-312-7456 (Main Office)
>&g
them.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (607) 288-2898
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Dave Tedeyan, P.E.
Ow
off any residual oil that might be left
> after manufacturing, just to assure strong adhesion.
>
> Geocell 2300 is another classic:
>
> https://www.geocelusa.com/product/2300-construction-tripolymer-sealant/
>
>
> August
> Luminalt
>
> On Wed, Mar 9, 2022 at 6:14 AM
Hi All,
What sealant do you all like to use for flashings on a shingle roof? I have
used the Geocel S2 and S4 for years, and it seems like it is nearly
impossible to get right now.
Thanks!
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
ork, try the
> other:
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Drake,
I believe that is for a single phase 2 wire output only. I am assuming one
hot and one neutral for the inverter output in this case. I would think
most *grid tied* inverters fall under 705.95B, where the neutral is only a
voltage sense and can be sized as small as the equipment ground.
ngs:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
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this
before, but that was for the charge controller. A couple people said they
had suppliers for the fans, but none specifically were mentioned on that
thread.
I appreciate the help!
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
) is far more problematic for
>>>>> some odd reason. It's not the fuse brand either.
>>>>>
>>>>> I believe the design fault is how the blades only hit a single contact
>>>>> on one side when they close. The Square D alternative has the blad
f872508d9c6a18ead%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C1%7C637759219458292776%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000=rzT09SNKVs10m75zjHMzOzEjNZAtP4JTPjuVRsU7wNw%3D=0>
>
> This email and any attachments thereto may contain SMA America,
Hi Mac,
Might I ask what modules these are connected to? There is some history here
with Sunpower modules (and possibly other high power, high voltage
modules). In these cases the issue is the module. If that's the case I can
provide some more detail about it.
As for remote resetting, it is
controller.
Thanks!
-Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com <http://www.sungineersolar.com/>
c: (6
out the wrong link, here's the correct one:
>
> https://www.lg.com/us/business/neon-r/lg-lg395a1c-a6
>
> Should I assume that if the fire department pulls the meter at
> a house fire, that qualifies as rapid shutdown?
>
> Bill
> On 12/7/2021 5:27 AM, Dave Tedeyan
rching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
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> Check out or upd
roblematic for
>>>> some odd reason. It's not the fuse brand either.
>>>>
>>>> I believe the design fault is how the blades only hit a single contact
>>>> on one side when they close. The Square D alternative has the blade
>>>> slipping between two
Hi Jason,
I recently did a microinverter swap of the old D380's to 54 of the IQ7
190's. Once it was commissioned I started seeing random MI's drop out, but
not always the same ones. I am pretty sure that this was due to
overvoltage. I measured the line voltage at 255v with the system turned
off.
;> was hard to notice…
>>
>>
>>
>> Best regards,
>>
>> Lloyd
>>
>>
>>
>> Lloyd Hoffstatter
>>
>> Sunstruck Consulting
>>
>>
>>
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>
there be some kind of fault in the inverter itself
that
occasionally induces extra current? Is there any way to tweak the settings
so that it
actually produces a bit more than 11.4kw? I appreciate your thoughts.
Cheers,
Dave
--
[image: Logo] <https://www.sungineersolar.com/>
Dave Tedeyan, P.E.
Hi All,
I am looking for recommendations for a solar racking system that can be put
on a flat commercial roof where the point loads can span 12-13" east/west.
I am imagining a system built up almost like a ground mount. Does anyone
have manufacturer suggestions?
Thanks!
-Dave
Hi Chris,
I also am curious of others experiences. I've got one system with SMA and
the TS4-R-F. No problems, but it's only 6 months old. I hear that SMA now
recommends the ones made by JMS, but it looks like essentially the same
thing.
Cheers,
Dave
On Tue, Aug 24, 2021, 11:22 AM Christopher
red as he was on a lake one
> day...Good Luck!
>
>
>
> *Dave Angelini Offgrid Solar
> "we go where powerlines don't"
> http://members.sti.net/offgridsolar/ <http://members.sti.net/offgridsolar/>
> e-mail offgridso...@sti.net
> text 209 813 0060*
>
> O
of this kind of wiring out there as
> I remember.
>
> There are some other standards for marine inverters like, UL 458 marine
> supplement and ABYC ratings.
>
> This includes neutral ground switching like in mobile apps too IIRC.
>
> Of course, just adding the word &quo
t; There are two list archives for searching. When one doesn't work, try the
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>
Kirk,
Could there be a loose wire connection to the breaker? That could cause it
to heat up an trip sooner than it otherwise would.
Cheers,
Dave
On Sat, May 8, 2021, 2:13 PM Kirk Herander, VSE wrote:
> I have a system where the SE1 inverter fried internally. The 60A AC
> output breaker
Hi Dave,
You did get the Square D part right. See the Schneider website, which shows
that it is 600V DC and does have an off in the middle.
https://www.se.com/us/en/product/DTU361/safety-switch%2C-double-throw%2C-non-fusible%2C-30a%2C-600-vac-vdc%2C-3-poles%2C-30-hp%2C-nema-1/
Cheers,
Dave
On
mbers.sti.net/offgridsolar/>
>> e-mail offgridso...@sti.net
>> text 209 813 0060*
>>
>> On Tue, 4 May 2021 19:24:13 -0400, Dave Tedeyan
>> wrote:
>>
>> I suppose the question here is - which is the worse failure mode?
>> A. Solar turning of
output of the generator circuit provides the signal.
>>>
>>> At 10:02 AM 5/4/2021, you wrote:
>>>
>>> Get a contactor with a 240 VAC coil. Connect the coil wire wires to the
>>> 240 V output circuit of the generator, so when the generator comes on,
something rated for just over 30A. This
seems like a better way to allow the generator to run at any time it is
needed, especially if it is a gloomy, snowy, winter day.
Cheers,
Dave
--
*Dave Tedeyan, PE*
[image: Sungineer Solar]
1653 Slaterville Road, Ithaca, NY 14850
Cell: 607-288-2898
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> "democracy" will cease to exist when you take away from those who are
> willing to work and give to those who would not."
>
to allow all the solar to independently charge each battery? Is
there another product out there that people would recommend for this?
Thanks for the help!
Cheers,
Dave
--
*Dave Tedeyan, PE*
[image: Sungineer Solar]
1653 Slaterville Road, Ithaca, NY 14850
Cell: 607-288-2898
www.sungineersolar.com
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*Dave Tedeyan, PE*
[image: Sungineer Solar]
1653 Slaterville Road, Ithaca, NY 14850
Cell: 607-288
Then just as a follow up, I looked at the SMA-41 datasheet. This shows that
it runs at it's highest efficiency when the output power / rated power is
about 0.4 to 0.6, and the only real loss in efficiency comes when you are
running at about 0.1 and below.
On Wed, Mar 3, 2021, 8:35 PM Dave
I've never really trusted PVWatts on this. I just did a quick test using my
location in the northeast, with all the standard values and then just
changing the DC to AC ratio. It's telling me that a ratio of 1.5 is almost
exactly the same as a ratio of 1, and that around 1.3 is best. You actually
, and also if there is a battery failure at some point they can still
run as a grid tied system.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 South Albany Street | Ithaca, NY 14850
o. *607.277.1118 x121* f. 607.277.2119
www.taitem.com
Solar • Sustainability • Energy
to put
the ENH202 in the middle of someone's house and generally aim it in the
right direction and there would be great signal 500' away even through some
trees. The TP link one needs a much better line of sight.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 South Albany
There is also a menu (I don't have the code handy now, but Fronius tech
support should be able to tell you) where you can specifically adjust the
individual operating windows - voltage and frequency trips and trip times.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
t;we go where powerlines don't"
> http://members.sti.net/offgridsolar/ <http://members.sti.net/offgridsolar/>
> e-mail offgridso...@sti.net
> text 209 813 0060*
>
> On Mon, 22 Feb 2021 18:52:14 -0500, Dave Tedeyan
> wrote:
>
> It's big and expensive, but you can
It's big and expensive, but you can do a SQD DTU361. At least that part
number should get you on the right track. You are looking for a double pole
double throw switch, correct?
Cheers,
Dave
On Mon, Feb 22, 2021, 4:59 PM Dave Angelini Offgrid Solar <
offgridso...@sti.net> wrote:
> Anyone know of
around 52Hz, when loaded. After, we got it to stay around 56Hz.
Fortunately, the homeowner is open to getting a better generator.
Thanks for the tips!
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 South Albany Street | Ithaca, NY 14850
o. *607.277.1118 x121* f. 607.277.2119
do you know if the Conext will log an error if the relays have
actually been damaged? I am hoping that there will be something in the
error logs that will help identify whether there is an inverter issue now,
or whether the issue lies with the generator input.
Thanks!
-Dave
*Dave Tedeyan, PE*
Sen
generator from Harbor Freight.
I have not laid my own eyes on it yet, but will be there in the next day or
two. Just wondering if anyone has experienced these symptoms and have a
good idea of what to look for first.
Thanks!
-Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110
Jason,
Bright sunny days, disconnect on the west side of house, maybe in the sun?
43.56A * 1.25 for continuous duty = 54.45A. If these disconnects are also
baking in the sun, maybe the extra ambient heat is enough to push it over
the edge? Just a thought.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior
site, but that one seems to be
almost as slow, and give only basic system information.
I am curious if others are having success monitoring their Sunpower
systems, or if people are having similar issues.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 South Albany
nnect" is the first
point of overcurrent protection for the service. What I am thinking of is
similar to the disconnect allowed on the line side of the meter (230.82
(3)), although this one is on the load side of the meter.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 So
point even though it
comes first? Or is this not something that is allowed? We are on NEC 2017
here in NY..
.
Thanks!
-Dave
*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC
110 South Albany Street | Ithaca, NY 14850
o. *607.277.1118 x121* f. 607.277.2119
www.taitem.com
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