mp;productCat_ID=39&sortOrder=4&act=p>
(Previous Model Num: MNBCB-1000/50-Battery Combiner)
MidNite 1000amp battery combiner box
Includes a 1000amp Positive and Negative bus bar with 3/8 inch studs.
On Aug 26, 2015, at 3:39 PM, Ray Walters wrote:
Hi Wrenches;
I have an upcoming proj
location of the bird house and locking it would be a quick
solution to the malicious shutting off of a system. FF do carry and do use bolt
cutters.
On Aug 26, 2015, at 7:26 PM, Ray Walters wrote:
I spoke with Phil Undercuffler from Outback, who is a long term respected
member of our list
alters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/26/2015 10:19 PM, billbroo...@sbcglobal.net wrote:
Ray,
Do you have a massive battery bank and 3, 8kW inverters inside the house? Is
this in a garage or power shed. If it is a
Excellent point, sir. I have looked at quite a few from the attic,
later when doing upgrades, and I haven't seen leaks. But NO, I have not
carefully gone back on every install to confirm. No news is good news,
but that still doesn't mean 100% leak free. Also, I'm working in a
drier climate,
WilIiam;
checked out your guards on your website, that looks really clean, but
also like a lot of work and expense. I'm still so surprised
manufacturers are not offering an option like that to their frame systems.
My question: how come you didn't just fence the array? Shading issues
on the
s.org]
*On Behalf Of *William Miller
*Sent:* Friday, September 04, 2015 12:09 PM
*To:* RE-wrenches <mailto:re-wrenches@lists.re-wrenches.org>>
*Subject:* Re: [RE-wrenches] Guarding against live parts 690.7 (D)
Ray:
1.Why no fence? Aesthetics. Also costs may be a wash by the time you
I would add to your question:
What BOS battery disconnect and combiner are folks using? Outback can
stack but doesn't offer the other gear.
I can share some pics supplied by their Tech support of a 5 Radian setup
using telecom style overhead Buss bars; not sure how many inspectors are
going to
The other option is Midnite Solar's remote controlled breakers or
combiner boxes. They make up to a 250 amp breaker, but I found on large
battery systems that we need some thing larger. Colorado is now
requiring Rapid Disconnect for the batteries as well, which is NOT the
original intent of th
Flown many times with my tools. Batteries are carry on, and all the
rest of the tools need to go in the checked baggage.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 9/28/2015 7:18 PM, Dan Fink wrote:
Esteeme
Contact S Flex in Denver
http://www.sflex.com/htdocs/index.php/us/contact-information
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 10/5/2015 7:37 PM, James Rudolph wrote:
Aloha Wrenches,
Does anybody know where
I agree, many module failures only show up under load. I just use a
clamp on meter while the modules are still wired to the batteries.
The PV150 can capture operating current and power as well, so it should
be able to identify most module fails. I'm just not sure if it can do
this without a lo
.
Mahalo Ray!
On Mon, Oct 5, 2015 at 11:14 PM, Bill Loesch <mailto:solar1onl...@charter.net>> wrote:
James,
Glad you received at least one potential source for product, so far.
With all due respect, why do you need to replace the clips?
Any take away for others so as to not
Greetings All;
I have used DP&W's top of pole racks for 20 years, but I've had my share
of trouble, too.
First the lead times are horrible, sometimes pushing 2 months.
Second, the cost is approaching the cost of the modules, especially for
high wind ratings.
Third, they just can't seem to wai
I agree installing a fuse at the battery bank is a good idea. However
actually doing it right is tough. Putting the class T fuse and holder
in a battery enclosure with flooded cells is going to cause more trouble
than it solves. I've seen class T fuses oozing green goo out the ends,
and the
Wow, I just got back from over seas myself, went through multiple
checks, and have never had a problem with the probes on my meters. I
always carry those on. I mean they're not really worse than a pen,
pencil, paper clip, etc
Or maybe there are some Ninja solar installers that can do some s
Sorry Drake, I don't know what that one is.
These rack questions come up so often on the list, we should create a
data base to ID all the racking systems.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/10/201
Hi All;
It just occurred to me that the new secure power supply model Sunny Boy
TL inverters might be able to charge a battery based inverter through
its regular AC input, and avoid some of the control issues inherent to
regular AC coupled systems. This would allow the secure power output to
HI All;
I just ran across a solar retailer in Colorado claiming to be a "CEC
approved retailer".
Ever heard of that? I looked it up and the Clean Energy Council in
Australia has an CEC approved retailer list, which of course this
company is not on the list.
CEC is also the Consumer Electronic
Even if it works for short term testing, I would imagine long term
issues that would require more frequent equalization, and shorter cycle
life.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/18/2015 5:09 PM,
Dellta LA lightning arrestors would not prevent the diode damage you
mentioned. I think many others on the list will confirm that Delta LAs
are not effective at preventing equipment damage, and probably only
useful in preventing complete wire melt down. Midnite found the Delta
didn't start c
We used to just bundle the PV cables and secure them close to the pivot
point at both the rack and the pole with insulated wire loom clamps. We
always made a big enough loop to handle full articulation, but not too
long so they wouldn't catch on the Combiner box, etc. We also started
using b
- 970.626.5253 C - 208.721.7003
"Responsible Technologies for Responsible People since 1988"
*P*Please consider the environment before printing this email.
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Monday, November 30, 201
Basically I would try to save the batteries and sell this guy what he
really needs: a better system.
Obviously there is no LVD, and so this whole sad story of 8 v out of
48v, and frozen electrolyte (more like just water).
He needs a real inverter/ charger and put all his loads on AC or at
least
HI Larry;
I second your suggestion that dealers have a separate, expedited contact
line that reaches someone with a higher level of expertise.
1) We're repeat customers, and their front line sales team.
2) We're not going to call unless its something trickier to figure out.
This has been a long
Anyone heard of or used Discover Batteries?
http://discover-energy.com/products/advanced-tubular-batteries/
They have a sealed lead acid battery that they are claiming 1900 cycles
to 80% DOD.
Sounds amazing, but
They are head quartered in Canada, and I'm having a hard time getting
info on t
9 AM, jay wrote:
HI Ray,
Not really that unique.
Most industrial VRLA are pretty close.
Just a quick check of the Outback site, has their RE version at 1500 cycles at
80%DOD
and OPzV at 1800 cycles.
Unigy, and Absolite 2P are going to right there as well.
jay
peltz power
On Dec 12, 2
We've gotten Rolls clunkers right from the factory with zero volts, and
yes we had to get nasty to get it replaced. They wanted to charge us
shipping under the warranty terms, and I stood my ground: they sold a
hunk of lead, when I paid for a battery. That is not completing the
sales transacti
I think many manufacturers use Refurb parts for repair/ warranty. I had
a cell phone replaced under warranty and the "new" one was not new at all.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/15/2015 7:24 P
Hi Larry and Jay;
I totally agree, that taking into account charge and discharge rates,
DOD, and temperature, we should be able to more accurately model a
battery's lifespan. We already have temp sensors at the battery, so it
seems just a matter of software to do this. Also battery's nonlin
It's also possible to charge just the weak cells using an automotive
charger set to 6 v.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/17/2015 8:29 AM, Luke Christy wrote:
Thanks Guys, for the feedback.
I r
3 505-8760
On 12/18/2015 8:44 AM, Starlight Solar Power Systems wrote:
On Dec 17, 2015, at 11:55 AM, Ray Walters wrote:
...but as far as I can tell, every other storage chemistry has similar
characteristics: lower capacity at low temps, a high temp limit, non-linear
cycle life depending on DOD,
I heard Congress just approved the extension of the 30% tax credit
beyond 2016. Supposedly the rule changed to "begin construction" from
"put into service", but I don't think that takes effect till 2017.
Definitely want a tax pro to look the whole thing over, especially in
light of the new ru
The HUP is a smaller footprint than L16s because it is a taller
battery. We've moded quite a few battery boxes just by raising them and
adding a strip of wood at the bottom.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 50
I think I would put in an eye wash station first, followed by a set of
cable cutters. The one battery fire I experienced was a quick burn of
the hydrogen off of a single cell, lasted a few seconds with very little
heat, and extinguished it self. It was the result of a shorted battery
cable, s
The EZ out is for unscrewing a threaded connection, I've spent a bunch
of time with those only to have the EZ out break off in there too. Then
you've got a real mess of hardened tool steel.
I would first drill several small 1/8" holes in the lead around the
circumference of the bolt. Then,
What I've seen lately in my Spam box, advertised at the usual ridiculous
price, is for low wattage Solarworld modules. We currently are
installing 285 and 290 watt models, and what was being offered were 260
and under. Either they're knock offs, or someone is moving some really
old stock.
Thi
I would use a SS washer with integrated Neoprene rubber gasket. We use
them on roof work, and Unirac uses them under the lag on their roof
flashings.
Image result for neoprene washers
https://www.copperstate.com/shop/429/neoprene-washers
Thanks,
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certifi
plastics is they
don’t compress so you do get a ridged structure.
jay
peltz power
On Jan 28, 2016, at 10:15 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
I would use a SS washer with integrated Neoprene rubber gasket. We
use them on roof work, and Unirac uses them under the lag
Hi All;
We're looking to improve our battery box construction, and are
considering using 1/8" think polypropylene sheeting. I've used small
premade boxes before, but this will be for a HUP install, and we would
want to build the box around the batteries after. Does anyone have
experience/ c
bottoms of batteries should be employed.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
www.frenergy.net
On 1/28/2016 5:35 PM, Allan Sindelar wrote:
Ray,
Just a couple of weeks ago we installed a 24V HUP set in an existing
installati
respirators to Demo a box that was in a dilapidated and
soon to be be razed structure. The general contractor and client stood
by laughing and commented that it looked like a scene from Breaking Bad!
On Jan 28, 2016, at 9:18 PM, Ray Walters <mailto:r...@solarray.com>> wrote:
Thanks fo
That new chart is for a single block, but we would want the M100 or M110
which is 12 of those S30 blocks connected together (580 AH @ 20 hr
rate). I haven't tried them, but I penciled out the ROI and at 3000
cycles they stand up well against other lead acid batteries. 40 v is
low, but I believ
We were called in on a system similar to this, and we ended up just
installing an AC transfer switch. Normally the GT array sold back to
the grid side of the system, but in an extended outage, the customer had
the option to switch the connection to the back up load side (AC coupled)
He was made
What batteries are you using? I've had flooded lead acid batteries have
several mA of current flowing to ground through the acid mist along the
side of the battery. I had the battery bank supposedly isolated but got
a shock and traced the connection to ground to the middle of the battery
pack
Greetings Esteemed Wrenches;
I just received an interesting call from an owner of a late 1990s
vintage GTB system here in Colorado. (Trace SW4048 I'm guessing) The
tenants had disconnected the grid for almost 2 years and lived in the
house off grid. They had also done many scary wiring "upgr
the owners manual
Jeremy Rodriguez
Solar Installation And Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
On Feb 9, 2016, at 12:23 PM, Ray Walters wrote:
Greetings Esteemed Wrenches;
I just received an interesting call
Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
> On Feb 9, 2016, at 12:23 PM, Ray Walters mailto:r...@solarray.com>> wrote:
>
> Greetings Esteemed Wrenches;
>
>
I believe you would still need a battery for the Classic to work properly.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/9/2016 7:07 PM, Dan Fink wrote:
I have an interesting question I haven't run into before,
Greetings Esteemed Wrenches:
I've just heard back from our inspector here in Colorado, and we are
still being required to disconnect the batteries under 690.12. No where
in 690.12 are batteries mentioned, nor in the appropriate 690.71 section
that deals with batteries. The entire reasoning b
power beyond the array is off, just like we turned
the sun itself off.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/15/2016 11:10 AM, billbroo...@sbcglobal.net wrote:
Ray,
I guess I have to step in after that ac
use?
What if someone thought all the power was off when they dragged a
hoseline into my basement.
My two cents
Pat
On Tue, Mar 15, 2016 at 1:10 PM, <mailto:billbroo...@sbcglobal.net>> wrote:
Ray,
I guess I have to step in after that acknowledgement. PV system
circuit is a
the battery. Cost is about $120 each.
Midnite told me than plan to implement the arc fault relay control. A
simple SPST switch in series with the 12 volt Aux output will allow
shutdown. Add a fire alarm output relay for auto-shutdown in case of
fire. Seems like a simple, cost effective way to me
ippy Drumpf brain from
no where's ville, so what do I know?
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer since 1986
303 505-8760
On 3/15/2016 3:54 PM, Patrick A. Shortell wrote:
Hi Ray
Well you got me there
I meant no dis
My two cents
Pat
On Tue, Mar 15, 2016 at 1:10 PM, mailto:billbroo...@sbcglobal.net>> wrote:
Ray,
I guess I have to step in after that acknowledgement. PV
system circuit is a
self-defined term and therefore cannot be defined unless you
cian
Solar Design Engineer
303 505-8760
On 3/15/2016 8:04 PM, b...@midnitesolar.com wrote:
On 3/15/2016 5:23 PM, Ray Walters wrote:
Hi Brad;
I think that remotely tripping the inverter might work with Outback,
but definitely not with Magnum. (I checked with them today) Also, if
the battery cable
What about building a 30 vdc system (5 x 6v batteries in series) and
adjust the settings on a Midnite Classic to work with that? How tight
does the 30 vdc output need to be?
On inverters, I've had trouble with the Suresine, basically not working
with GFCI outlets.
I keep trying different mod
Also worth looking at Magnum's new AC diversion load system. It does
the frequency shifting but also 4 kw dump load that can be set up to any
AC electric load.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/4
Hi Wayne;
Which GFCI outlets do you use? We've had trouble with random tripping
with the Morningstar.
I switched outlet models, thought I fixed it, but its tripping again.
Morningstar's list of approved GFCIs is outdated.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Lic
Also look at the notes to the tables in Chapter 9. For conduit fill,
all wires are counted. 310.15 covers ampacity derating for more than 3
current carrying conductors in the raceway. The key is "current carrying
conductors". The neutral definitely carries current. You don't have to
count g
That doesn't make sense, the inverter's charger determines the max
charge rate and the max draw from the generator.
The 8.5 kW Kohler should have no problem running the 4.4 kW Magnum.
What is the altitude?
Is it wired for 240 vac ? If the generator is running at 120 vac, then
you are only r
However, in this case, Peter's installing lots of 120 vac branch
circuits, so all of those neutrals will be carrying full current (unless
they are shared neutral circuits). Mike Holt's exception would apply to
240vac circuits if they had a neutral. Further, Holt's exception would
not be appli
FYI, generally we haven't had cold start issues with propane units, as
long as the pipe is sized properly ( as mentioned in another recent
post) and the starter battery is kept fully charged.
This is based on about 20 years experience in the Rockies with temps
below 0, but not 40 below. We don
ttery charging needs to be added foroff grid
Jerry
Sent via the Samsung Galaxy S™ III, an AT&T 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 w
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 hur
ld want to do. (I'm still waiting for that app that
lets us set up systems with a laptop or phone)
Good luck, please post your solution.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/29/2016 6:19 PM, jay
Hi All;
I'm in the process of finishing a grid tie with battery backup system,
and besides the many pitfalls of this type of work, I destroyed a Tripp
lite surge suppressor when I turned on the system.
The system has a pair of the new Outback VFXR 3524 inverters wired in
120/240 series config.
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, penobscotso...@midmaine.c
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 from
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,
Licens
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 numb
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 Ins
My old trick for Wattsun trackers was just to turn them into fixed
racks. Usually the tilt actuator could be hot wired with a 12 v battery
to get summer and winter tilt.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-87
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. We
1) I've used the Euro connectors you show for decades with good
results. Not necessarily legal here, but I like them
2) Before bad mouthing the wire nuts, I've found installer error to
almost always be the problem. In the installation pictured, the wire
nuts are not outdoor rated, and the
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 us
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 m
HI Drake;
My old Fluke clamp on died last year, and some good Wrench here turned
me on to the Seaward solar power clamp. It does everything the Fluke
did, and offers some amazing power analysis too. It can do real time
power readings that even account for power factor. It can break out THD
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 tho
Constant pressure pumps are a much better set up. The Grundfos SQE is a
great example. Your well driller is right on target.
However, expecting 10 gpm from a 600 ft deep well off grid is overkill.
I would compromise on that flow rate. 5 gpm will be plenty of water in
most cases, outside of w
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 breakers
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 p
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,
ll need a small pressure tank.
jay
peltz power
On Oct 28, 2016, at 1:13 PM, Ray Walters 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
start up s
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)
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, William
Solarray, Inc
Nabcep 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, 2
ller
*Sent:* Thursday, November 10, 2016 11:26 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Outback Programming Ghost
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 Walte
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 lar
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
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, Solarray
stem I did, 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 P
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 cu
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 dire
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 si
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 prop
winds over 100 mph aren't half that pressure.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 1/10/2017 4:38 PM, penobscotso...@midmaine.com wrote:
Hi Ray,
I don't have much advice, but I can tell you
tch it bounce back and forth: that's the simple way to determine its
harmonic resonance.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 1/10/2017 6:26 PM, William Miller wrote:
Ray:
I can't say I h
would
contribute to failure of the kind you experienced.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 1/10/2017 5:26 PM, William Miller wrote:
Ray:
I can't say I have a solution to your pro
ismontana.com <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,
lto:re-wrenches-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 po
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