inspection of the old array wiring will reveal it needs
rewiring anyway. Folks always blamed lightning for cooked connectors,
when the real culprit was over paralleling. I've seen the connections
get so hot (4th module in parallel) that the j box was melted.
Ray Walters
Remote Solar
On 5/7
enough air. You didn't mention gen set model, or
whether the frequency was a solid 60 hz. I've seen bad things happen
when the frequency got out of spec too. I'm guessing a bad voltage
regulator on the gen set.
Ray Walters
Remote Solar
On 4/25/2024 11:24 AM, Kevin Pegg via RE-wrenches wrote
. The
cheapo BMS lears its ugly head once again. All we're doing lately is
fixing stuff less than 5 years old.
Ray Walters
Remote Solar
On 4/25/2024 9:52 AM, Michael Morningstar via RE-wrenches wrote:
Here's a different take. Just food for thought and not necessarily a
suggestion. Those 1st
and the customer can be
bored for a decade. It will make more power too, especially on cold,
sunny days when you really need it.
Ray Walters
Remote Solar
On 4/23/2024 12:47 PM, Todd Cory via RE-wrenches wrote:
My old MX60 said " hot" when the fan had failed.
Todd
"MX 2 Hot (Very rare)
it in house to pencil out. I'm not sure if it ever would,
considering that you still have to pay yourself or someone else to
operate the engraver, and the blank plaques probably cost a bit too.
Ray Walters
Remote Solar
On 3/30/2024 12:56 PM, Lou Russo via RE-wrenches wrote:
Aloha Wrenches,
Anyone
applications. The rest of us in the other 49 states are Not required
to comply with the 200 A requirement.
Good Luck out there.
Thank you,
Ray Walters
Remote Solar
On 3/28/2024 12:33 PM, Lloyd Hoffstatter via RE-wrenches wrote:
William,
Here is the CA Energy Code with the upsized busbar
xception 1 specifically says a single N-G bond is allowed for multiple
power sources.
Ray Walters
Remote Solar
On 3/13/2024 3:19 PM, Mick Abraham via RE-wrenches wrote:
Hi, Mechanix~
My off grid project gig has redundant 120y208 generators that need a
200a "break before make" manua
for, and I sleep well at
night with my standard contractor's liability insurance.
Remember, insurance agents primary goal is to sell more insurance. Of
course they want you to have an E policy, too.
Ray Walters
Remote Solar
On 3/11/2024 7:41 PM, Howie Michaelson via RE-wrenches wrote:
William, et
down mounting, and no losses. I've been
suspicious of top down module racking; and I was quite satisfied with
actual bolts and hardware to hold modules in place. But its just not
true anymore. I added 3/4" angle stainless steel to reinforce the
attachments on the top modules.
Ray Walters
On
Here's another mount at the edge of failure, from the same system.
Hardware is tight. Like many, I had lots of love for good ol' fashion
bottom mounting vs top mount, until this happened about 5 years ago.
This is how we learn.
On 3/8/2024 5:15 PM, Ray Walters via RE-wrenches wrote:
I've
I've had several modules pull off of bottom mount racking in high winds,
but never top mount racking. Newer modules have much thinner frames,
but are much more surface area than the old days.
So to answer Kent's question:
Ray Walters
Remote Solar
On 3/8/2024 3:50 PM, Kent via RE-wrenches
that's quite
accurate; I tried it on some bottles with fluid in them, and it seemed
to work well. I'll try and remember to take out with me on the next job
with FLA.
Ray Walters
Remote Solar
On 2/29/2024 2:12 PM, William Miller via RE-wrenches wrote:
Friends:
Thanks to everyone who responded
Who carries the Superwind turbines? We've been looking for a
replacement for the old Bergey XL1 to offer clients.
Thanks,
Ray Walters
Remote Solar
On 2/21/2024 7:20 PM, John Blittersdorf via RE-wrenches wrote:
As far as wind is concerned, I recommend SuperWind, made in Germany.
It is well
like "lead acid batteries aren't allowed", will get them to
back down on the spot. Getting solar trade organizations on your side
to help with the process can add much needed weight.
Ray Walters
Remote Solar
On 2/17/2024 2:26 PM, Dan Fink via RE-wrenches wrote:
Jay - Despite the excepti
ere.
Also, with all the mention of various UL listings, regulation needs to
evolve to differentiate between LiFePO4 and other Li+ chemistries.
LiFePO4 is inherently much safer, but we're being forced to comply with
all the same regulations as the less stable, more energy dense chemistries.
R
I second using the 48v to 12 v DC DC converter. I've had success with
that, and avoided the issues Jeremy mentioned.
Ray Walters
Remote Solar
On 2/17/2024 9:35 AM, Bradley Bassett via RE-wrenches wrote:
I powered a MidNite LSOB transmitter from a Classic AUX, though the
receivers didn't work
What's funny, is the good old SWs from the Trace days had the same
problem. Never could get them to equalize. Maybe that software
carried over.
Ray Walters
Remote Solar
On 2/12/2024 4:42 PM, jay via RE-wrenches wrote:
Hi Kevin
Thanks, I heard that exact thing from someone else.
Do you
Hi Richard;
Off list, what was your outcome from Simpliphi? Did they make any deal
with you? What did you put in as replacements?
Thanks,
Ray Walters
Remote Solar
On 2/8/2024 7:35 AM, Richard Nicol via RE-wrenches wrote:
Hi Ray
We had a complete failure of 6 Simpliphi batteries
ng for SLA batteries to get this
customer back in action.
Reporting as always from the Bleeding Edge,
Ray Walters
Remote Solar
On 2/8/2024 7:35 AM, Richard Nicol via RE-wrenches wrote:
Hi Ray
We had a complete failure of 6 Simpliphi batteries with the same
symptoms you found.
Another ins
of these high price tag batteries
don't start failing on my watch.
I've been holding this rant back for a while, trying to give Simpliphi a
chance to make this right. However, this week I heard their "diagnosis",
and then I saw Jay's timely post? I knew it was time.
Sincerely,
R
ecalls-amphenol-connectors-sold-with-pv-modules/>
Brian
On Nov 9, 2023, at 4:47 PM, Ray Walters via RE-wrenches
wrote:
12 Ga wire is not going to catch on fire, but the MC connectors
might. I just went back on a 7 yr old Solarworld install, and had a
bad series MC connector (module to modu
connector type.
10+ amps continuous, moist environment, 30F+ hotter than ambient temp,
all are tough on connectors. I predict more connector failures as
module current ratings increase.
Ray Walters
Remote Solar
On 11/9/2023 3:02 PM, Glenn Burt via RE-wrenches wrote:
Good luck trying to con
What is the array size vs the battery size? Sounds like a big array on
a small battery for the voltage to go that high that fast.
Ray
Remote Solar
On 10/21/2023 5:46 PM, William Miller via RE-wrenches wrote:
Friends:
I’m kinda stuck on a project setting up a SI/SB AC coupled system off
, which is what many folks find attractive,
I think.
Ray Walters
On 8/17/2023 1:41 PM, Jay via RE-wrenches wrote:
Im curious if anyone has actual measured data on a VAWT.
It just seems like they are meat for the end of the worlders
Jay
___
List
, 2023, at 5:08 PM, Ray Walters via RE-wrenches
wrote:
The aux off is only if the generator doesn't start. You need to set
the gen start voltage higher. Aux off is last ditch shut down, set
for 44v for lead acid, or 47 to 49v, depending on the battery and
inverter. Hopefully DC coupled PV
The aux off is only if the generator doesn't start. You need to set the
gen start voltage higher. Aux off is last ditch shut down, set for 44v
for lead acid, or 47 to 49v, depending on the battery and inverter.
Hopefully DC coupled PV will raise the voltage enough to turn the
inverters back
brand BTW.
Ray Walters
On 7/16/2023 4:18 PM, Kent via RE-wrenches wrote:
I think these modules are about 12 years old. I didn't have a
voltmeter or ammeter with me this morning when this was discovered so
I wasn't able to check the output.
Kent Osterberg
Blue Mountain Solar
On 7/16/2023 3:06
. Absolutely makes no
sense. Schneider, Outback, even Magnum is too low...?
Ray Walters
On 7/11/2023 6:19 PM, Mac Lewis via RE-wrenches wrote:
Hello Wrenches,
I'm trying to solve an issue with an older Outback FX system. It's a
quad stack of Outback 3648 FX inverters and he has a couple
of the driver circuits on
the LED bulbs. Only gets worse on a less than perfect AC waveform.
Ray Walters
Remote Solar
On 7/3/2023 5:09 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
I think I would try eliminating things. Turn off the AC coupling for a
few days and get results. Turn
. That sounds more like a cooked control board. I had
lightning damage cause an inverter to put out 140 vac, while its onboard
electronics read 120 vac.
If it helps, I have a used MS 4024 PAE (very low hours) that I could
send to you. Contact me off list if you want.
Ray Walters
Remote Solar
g off grid, and the only thing better than a Magnum for power
quality is Exeltech in my experience.
Ray Walters
Remote Solar
On 5/31/2023 11:37 AM, Chris Sparadeo via RE-wrenches wrote:
Hi all,
I have a client with a Magnum MS 4024- PAE inverter. There are some
serious issues with power outp
production on the PV system, and then do some subtraction.
Pretty simple for them, and you only get a call, if the inverter
production is low or off.
Ray Walters
Remote Solar
On 5/11/2023 2:20 PM, Larry Brown via RE-wrenches wrote:
Does anyone have a recommendation for a high quality meter
looked up (just like wire losses) for the size pipe and flow
rate.
Finally, you didn't mention how large a pond. To fill the pond, it
needs to overcome both evaporative losses, and leakage into the
surrounding soil.
Ray Walters
Remote Solar
On 5/8/2023 10:04 AM, Howie Michaelson via RE-wren
If the temperature is right, my IR camera can see the rafters. Best to
check early on a cold morning with the heat on in the building.
Otherwise I'm of the William "Hammer" system persuasion. Never found
anything better.
On 4/17/2023 1:31 PM, Garrison via RE-wrenches wrote:
Hi Kris,
I
on't cheap out.
Ray Walters
Remote Solar
On 4/4/2023 5:42 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
Hurts my head ! Agree that you will have more trips to this house
after the next one. This is most likely not going to get you 2 more
years. All of the wiring is good, clean, and t
So the 24 batteries are actually 72 individual cells that are trying to
charge equally, with essentially no BMS. Its not just max strings, but
max # of cells, and that's double my maximum.
You mentioned they use it pretty hard, so that's the other big part of
how long L16s will last. If the
, I've seen
less than 5 years from sealed L16s like Trojan. Full River is about the
best in that field, and still only going to see 7 to 8 years. It just
doesn't pencil out compared to HUPs or Li+.
Ray Walters
Remote Solar
On 4/3/2023 12:39 PM, William Miller via RE-wrenches wrote:
Daniel:
I
Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
On Thu, Mar 30, 2023 at 9:45 PM Ray Walters via RE-wrenches
wrote:
Hi Jason;
I was like you: thinking good ol' bottom mounting with SS hardware
was the best. All of us old wrenches
Use an electric screw driver, socket wrench, or *drill with a clutch*
set low to snug up the clamps, and then final torque with a torque
wrench. Period.
Ray Walters
Remote Solar
Former NABCEP 2004-2016
On 3/30/2023 4:34 PM, Jason Szumlanski via RE-wrenches wrote:
That would be great if it were pos
th
wiring into the system. Maybe she could do what several folks have
done: power a TV while you pedal. Anyway, here is device that might do
it: https://www.econvergence.net/
Ray Walters
Remote Solar
On 3/16/2023 3:58 PM, Larry Brown via RE-wrenches wrote:
Wrenches
I have a client that we did a
ers do not test and recommend
these kinds of systems. The best answer I have been able to come up
with is they fear people prepared like this would have a tendency to
"stay and defend" their homes rather than evacuating.
Todd
On Monday, March 13, 2023 6:37pm, "Ray Walters vi
Michael;
Can you share more about your sprinkler system and the power supply for
it? Over the years, at least two of my customers have lost their homes
(and PV arrays) in wild fires.
Ray Walters
Remote Solar
On 3/13/2023 2:34 PM, Michael Morningstar via RE-wrenches wrote:
WebRelay. I use
I'm not an EMP expert by any means, but I've dealt with quite a few
lightning damaged systems. Having a good connection to a low impedance
grounding system (steel cased well, Ufer ground) is crucial. I also
have had fantastic luck with Midnite's MNSPD line. Delta, not so much.
On 3/9/2023
that is in an Hammond organ, so
that I can tune the organ down from A=440 Hz to A =432 Hz to match an
even older piano.Yep, I'm living on the edge..
Ray Walters
(Now Even More) Remote Solar
___
List sponsored by Redwood Alliance
Pay optional
for anything
greater than 60 amps for 2 poles, other than large DPDT switches which
get pricey and hard to source especially for 200 amps?
Howie
On Thu, Mar 2, 2023, 6:23 PM Ray Walters via RE-wrenches
wrote:
I probably still have one of the old QO boxes on the shelf, but I
never liked
://www.northerntool.com/shop/tools/product_200653609_200653609
Midnite makes small 30A and 60A T switches as well:
https://www.midnitesolar.com/productPhoto.php?product_ID=416_ID=29=3=p
Ray Walters
On 3/2/2023 11:57 AM, Sindelar Solar via RE-wrenches wrote:
Kris, It was SqD QO403, and it was a 3-pole load center
at 6:43 PM Jerry Shafer via RE-wrenches
wrote:
Pet heater have worked for me, I air gap a sealed heater box under
the battery, thermostat inside the top of the battery. It's slow
and low power but does the trick
Fun times
On Wed, Feb 8, 2023, 3:05 PM Ray Walters via R
with the Solark's
load controls.
I've considered some DC options, but they don't make much sense, since
the inverter has to be on to charge from PV anyway.
The long term plan is for the client to finish the insulation, and sheet
rock, and add a gas wall heater in there as needed.
Thanks,
Ray Walters
bunch of DIY garbage. Find out who did the original wiring.
Probably not a pro.
Ray Walters
Remote Solar
On 12/16/2022 11:35 AM, Kirk Herander via RE-wrenches wrote:
You may have neutral and ground connected at more than 1 location,
meaning at the genset and in house panel, which means the ground
To add to Jeff's suggestion of targeting 95%, many Li+ batteries have a
spike in voltage as they reach 100%. We just don't have to worry
anymore about sulfate damage from under charging.
Ray Walters
Remote Solar
On 11/19/2022 7:14 AM, Jeff Clearwater via RE-wrenches wrote:
Hi Kris
What
, with
built in color touch screen for monitoring, price much better.
Simpliphi = no monitoring at all, have to parallel ridiculous qty of
batteries to do a normal off grid home, but integration guides are the best.
Ray Walters
On 11/17/2022 1:16 PM, r...@solartechvt.com wrote:
We’ve started to use
Talk to Thomas Honey. He is the Fortress rep, nice guy, and
knowledgeable wrench. He has stepped in on my issue.
Ray
On 11/16/2022 10:58 PM, Howie Michaelson via RE-wrenches wrote:
Good Evening,
I have a frustrating charging issue involving 2 Fortress eVault Maxs
connected to a Sol-Ark
On Wed, Nov 16, 2022 at 2:02 PM Ray Walters via RE-wrenches
wrote:
Greetings Fellow Wrenches;
Based on glowing reports from the RE list, I finally used
Fortress for a
battery replacement for a long time customer. Overall, it
seems to be a
better
the batteries.
Has anyone else had a hard time with Fortress support? Does anyone have
a direct contact? Customer is beyond pissed now, after almost 2 weeks
hearing nothing, and having spent tens of thousands.
Thanks;
Ray Walters
Remote Solar
varied.
Ray Walters
On 9/30/2022 6:57 AM, Jay via RE-wrenches wrote:
Hi all and thanks for the input.
I guess he’s just been unlucky with the problems ( firmware upgrade
switching to 50hz) and possibly just some random bad hardware.
In regards to your thoughts of a install issue, he has spent
I agree with James here. I will relate a "funny" story about a neighbor
mounting a large Elk antler rack on his wall with lags. Worked fine,
till one night they heard a big crash, and the antlers had pulled the
wall stud right out of the wall into the living room. The 2x 4 came
right out of
Default efficiency on the TriMet was 94%, needs to be quite a bit higher
for Li+. I'd try 98%.
2nd point: Customers have always obsessed about meter readings: they
need to take a chill pill, and accept its not going to be better than
+/- 10% accuracy. Or get a Fortress battery with built
Not to sound like a commercial, but I've had good results with "Tub
O'Towels" heavy duty wipes. Its got a lemon base that seems easy on
most surfaces, but it will take paint off with a few seconds of elbow
grease. Hoe Depot has them sometimes, or Northern Tool carries them
too. You'll use
Most carts run at 48vdc these days. They either have eight 6 volt
batteries, or six 8 v batteries. I would think that would make a good
match for power backup with a 4kw range inverter like the Magnum MS4448.
Ray
On 3/15/2022 12:18 PM, Nick A Lucchese wrote:
Not sure what the golf cart
The Midnite Classic can go higher to 72v stock, and they have models
that can work with 120 vdc batteries.
Ray
On 3/15/2022 12:19 PM, larrycrutcher wrote:
Hi William,
A charge controller may not be needed if you are running the pump
direct. By designing the PV array so that the Isc is
All else fails, I just would go back to the Trace retail, give it a 10%
for being used, and call it good. $165? no one will complain about
that
On 12/10/2021 6:42 PM, Jerry Shafer wrote:
Truely it depends, if someone is looking and needing that part, the
sky is the limit, its its
, their
regular breakers are 150 vdc rated. I only use the 300 v rated breakers
with the new FM 100 that can take 300 vdc.
Ray Walters
Remote Solar
On 10/25/2021 6:45 PM, Chris Sparadeo wrote:
Hi Jeremy,
According to the QO cut sheet the answer is 48VDC:
https://download.schneider-electric.com/files
Is this something else we need to put into our contracts?
"Not responsible for sounds due to normal thermal expansion and
contraction of racking, modules, and roof".....
Ray Walters
Remote Solar
On 10/20/2021 2:58 PM, Jason Szumlanski wrote:
These were Black framed Axitec panels.
ave not tried in cold weather, is diesels. I have
clients in warmer places with Kubotas that have offered excellent
service. I have clients in Alaska that love their diesels, but I'm not
sure what they've done to cold proof them.
Ray Walters
Remote Solar
On 10/19/2021 1:13 PM, Sindelar Solar wr
117 vac is perfect output. If the washing machine is having issues, it
would be with the stepped waveform, not the voltage. The old Trace had
a pretty choppy "pure sine wave". I had washers not run on the Trace
SWs, and we were able to put a capacitor on the inverter output that
fixed the
When I'm evaluating an old system, one thing I do is really yank on all
the battery connections. If it turns, tighten it down, and in several
cases, the cable just pulls loose from the connector. They are time
consuming to do right. Cable has to be stripped long enough, the
crimper needs to
HI Dave;
Based on the evidence, I might suspect a short in the inverter, or the
inverter was feeding a heavy load when the melt down occurred. I can't
see how a short at the battery would cause an inverter failure, unless
the melted lead caused the polarity to be reversed, or created a
nches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Thursday, January 12, 2017 5:22 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Solar World Wind Damage
Chris & Dana;
Our site is a mountain in Wyoming and does have some focusing effects,
so maybe 170 mph is possible. A
lt;http://www.oasismontana.com>
*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Thursday, January 12, 2017 2:16 PM
*To:* RE-wrenches
*Cc:* Sefchick, Steve
*Subject
wever.
William
Lic 773985
millersolar.com
805-438-5600
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ray Walters
Sent: Tuesday, January 10, 2017 2:31 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: [RE-wrenc
illiam
Lic 773985
millersolar.com
805-438-5600
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ray Walters
Sent: Tuesday, January 10, 2017 2:31 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: [RE-wrenches] Solar World Wind
Hi Daryl;
I wonder if the DP rack is allowing some bending or torqueing of the
module frame, that over time with thin aluminum causes metal fatigue,
cracking, and finally total failure. Funny both of our isolated
failures involved the same rack. Also, I did more sluething and these
Greetings All;
I just had the dreaded call from one of my higher profile commercial
clients: a remote radio repeater station had modules ripped off the
frame by high winds.
Two SW285s were damaged. The wind was strong enough to rip right
through the aluminum side rails. We had used the
I've seen similar weirdness with many systems of various brands. The
issue seems to be having the generator shutting down while still under
load, with as you noted, the frequency and voltage dropping, and the
inverter not transferring quick enough.
Basically I suggest to my customers having
Also, you didn't specify, but AC and DC are specifically allowed in the
same raceway per 300.3(C)(1). Only If the DC circuits are PV source or
output circuits, then 690.31(B) prevails, which says they can't share a
raceway. But again, as Chris mentions, this restriction does not apply
to
Hey Dan;
If this just problem just started, I'm with Drake, you could have a
premature cell failure. I also agree with Allan, 2 wire pumps are
certainly problematic on inverters. Many well service folks don't even
install them because they don't last near as long as 3 wire pumps, so
your
, a third party was hired to audit the
PV work. It was on the checklist to spot check torques. I have been
spot-checking torque ever since.
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Tuesday, November 29, 2016 1:14 PM
*To:* RE
I own the M18, and the power varies noticeably with discharge, and also
with higher amp hour packs. My drill screams with a 5 AH pack! I agree
its less of a drop with discharge than with lead acid or NiiCad, but its
still enough to make torque settings inaccurate.
R.Ray Walters
CTO,
I believe that the reason they don't list actual torque values for drill
settings is that they can vary quite a bit depending on the SOC of the
battery, temperature, drill age, etc.
If its a critical torque application, I would not depend on the drill
settings, but instead do a final tightening
Here's the lug you would use for the inverter and batteries
https://www.delcity.net/store/Straight-Tinned-Copper-Lugs/p_810763.h_796015.t_1
It doesn't say here, but on the bag I got, it specifically is listed for
fine strand cables too.
I have 3 crimpers that I use: one like Allan's for the
like some serious glitch.
William
On Nov 10, 2016, at 6:25 PM, Ray Walters <r...@solarray.com
<mailto:r...@solarray.com>> wrote:
It almost sounds like someone got in there and tried to reprogram
stuff themselves. Have you installed the proper anti-Gremlin devices?
R.Ray Walters
CT
Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/10/2016 9:26 PM, William Miller wrote:
Ray:
I have no reason to believe anyone has been meddling. No one knows the
password. It does look like some serious glitch.
William
On Nov 10, 2016, at 6:25 PM, Ray
It almost sounds like someone got in there and tried to reprogram stuff
themselves. Have you installed the proper anti-Gremlin devices?
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/10/2016 12:34 PM,
The exception under 690.8(B)(1) definitely applies. All of Midnite'
breakers and boxes are rated for 100% continuous operation. I believe,
this does not apply to their touch safe fuse assemblies, however. Also
FYI, you should be able to use the 90 deg C rating for complying with
110.14 (C)
pressure tank.
jay
peltz power
On Oct 28, 2016, at 1:13 PM, Ray Walters <r...@solarray.com> wrote:
Greetings Esteemed Wrenches:
We have a tiny house project, and need to supply the pressure pump. My go to
pump has been the Grundfos MQ series of constant pressure pumps. They have no
st
Greetings Esteemed Wrenches:
We have a tiny house project, and need to supply the pressure pump. My
go to pump has been the Grundfos MQ series of constant pressure pumps.
They have no start up surge, and don't require an external pressure
switch or pressure tank. For small part time cabins,
Nice work William, thanks for posting all this info. That issue with
mounting the Mate 3 is just ridiculous, I totally agree they need to
make an adapter to interface with regular boxes. They can sell it
separately.
In the 90s it was understood we had to fab our own solutions, but at
this
This thread actually brings up issues I've struggled with for years too.
QOs are really not good for over 50 v. The panel mount QOUs are
really expensive and special order. I believe they're only good to 125
vdc, so that not much help with higher voltage arrays.
There are much better
Sounds like ovens have gotten more complicated over the years. As soon
as I read "control board" and modified sine wave, I cringe. The good old
DR inverters worked great, I even ran my own shop on one for several
years back in the 90s. I for the most part quit selling them though, as
even
Hi Chris;
Its the same as a switch leg for a light. The neutral stays at the
light, only the hot is run down to the switch and back.
Also, with some critical load panel set ups available (ie Generac),
there is no provision to even run the neutrals to the new CLP.
This is cleaner and involves
Hi Mac;
I'm not sure I understand how you would extend the wires without
splicing. BTW you only need to extend the hots, not the neutrals or
grounds.
*NEC 312.8* sets a cross sectional area limit of 75% for the splices and
wires inside an OCPD Enclosure.
I just found these inline splices to
Hi Gary;
I think it would be a waste of time to load test a sealed battery that
is 9 years old. Even at only 20% discharge, that battery only has 2800
cycles. At 80% discharge, its 550 cycles. The daily system cycle is
probably roughly a 10% cycle, coupled with the frequent deep cycles.
Trojan L 16s have a known issue with premature cell failures. The T105s
seem to still be fine, but I won't sell the L16 anymore.
SG readings don't even matter when you have an obvious cell failure.
Its like doing blood work on a corpse.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV
My guess is that in your case the GTPV will just help alleviate the volt
drop situation. I wouldn't start adding transformers, etc until you are
having a problem. Put in the contract that this extra cost may be
necessary for proper function, but I would keep it as a backup. Based
on the
So this may be a dumb question, but I'm assuming wire nuts are not
suitable for Fine strand wire? I agree that most installs are not code
compliant in this regard. Its really tough to find parts or even good
info on this.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
I think the issue has always been locating the right parts, not the
installation. Everyone carries the Cobra X flex, but not the ferrules.
We usually crimp lugs on and use breakers with stud terminals, so the
need for ferrules is minimal.
I have always wondered about the terminal bussbars
Could you tell us about the metal conduit vs. Romex installation
differences between the Enphase and SolarEdge?
Thanks,
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/5/2016 11:54 AM,
agree to have an additional cycle on the batteries when they don’t need it.
I’m working with OB to find out why this is happening.
Thanks
jay
peltz power
On Apr 29, 2016, at 11:07 AM, Ray Walters <r...@solarray.com> wrote:
What's wrong with the chargers being on? Just set the
What's wrong with the chargers being on? Just set the charge settings
(absorb 56 v, and absorb time 5 minutes) fairly low. It will lightly
charge for a few minutes, and then go to float.
Just because your customer imagines this to be a problem, doesn't mean
it actually is. Its not going to
to be added foroff grid
Jerry
Sent via the Samsung Galaxy S™ III, an AT 4G LTE smartphone
Original message
From: Ray Walters
Date:04/28/2016 7:28 AM (GMT-10:00)
To: RE-wrenches
Subject: Re: [RE-wrenches] Off-grid generator update?
FYI, generally we haven't had cold start
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