Mac:
We had a similar problem with a large bank of IBE 2 volt cells. The
batteries had to be removed the same day they were installed and then
reinstalled the next day. They sat outside for one night. The flags
acquired an invisible but insidious corrosion that caused problems getting
and
You could use Morning Star relay driver to control the AC dump load.
I have one for my system, but have not yet installed it, but have
programmed it on my computer. If it works as designed, it should be
perfect in conjunction with a relay.
At 04:42 AM 10/14/2012, you wrote:
Hi there,
Is
Hi Wrenches,
I am looking for a 500A DC rated DC bussing, one with a built in shunt and
one without. I'll need at least 4 terminals/bussbar that will bolt on or
land 4 ott cable. Does anyone know where I can find something like this?
Thanks
--
Mac Lewis
*
Yo solo sé que no sé nada.
Hmmm,
This had factory installed bussing. I will pull it off and clean it up.
Thanks. I suppose that something like this be invisible to an Amp hr
meter.
On Sun, Oct 14, 2012 at 11:01 PM, William Miller will...@millersolar.comwrote:
Mac:
We had a similar problem with a large bank of IBE 2
Hello, Wrenchies~
Mac Lewis wrote about battery strangeness on the Sunny Island system for
his clients. Here is a theory to consider, Mac.
I once bought a 48v string of famous brand two volt cells in which one
cell had been loaded backwards into its case. When hooked up according to
the +/-
Mick,
Thanks for sharing. Outstanding troubleshooting (particularly when done
remotely).
Bill Loesch
Solar 1 - Saint Louis Solar
On 15-Oct-12 8:24 AM, Mick Abraham wrote:
Hello, Wrenchies~
Mac Lewis wrote about battery strangeness on the Sunny Island system
for his clients. Here is a
You should see a voltage drop across the connections if they are faulty.
On Mon, Oct 15, 2012 at 8:54 AM, mac Lewis maclew...@gmail.com wrote:
Hmmm,
This had factory installed bussing. I will pull it off and clean it up.
Thanks. I suppose that something like this be invisible to an Amp hr
How much voltage drop indicates a problem?
On Mon, Oct 15, 2012 at 8:13 AM, Chris Mason
cometenergysyst...@gmail.comwrote:
You should see a voltage drop across the connections if they are faulty.
On Mon, Oct 15, 2012 at 8:54 AM, mac Lewis maclew...@gmail.com wrote:
Hmmm,
This had factory
What brand recommendations do the group have for an battery charger to be
plugged into a genset? Used to be Todd but at some point they lost favor.
Thanks all.
Bill Dorsett
Sunwrights
1715 Leavenworth
Manhattan, KS
785/539-1956 Home/Office
Hi Mac
Check out midnight they have exactly what you need
Jay
Peltz power
Sent from my iPad
On Oct 15, 2012, at 5:24 AM, mac Lewis maclew...@gmail.com wrote:
Hi Wrenches,
I am looking for a 500A DC rated DC bussing, one with a built in shunt and
one without. I'll need at least 4
Check out Iota.
Aaron Mandelkorn
NABCEP Certified PV Installer
Renewable Energy Outfitters
Box 65 Salida, CO. 81201
(970)596-3744
reoso...@gmail.com
www.reosolar.com
On Oct 15, 2012, at 9:14 AM, William Dorsett wrote:
What brand recommendations do the group have for an battery
Morning,
The AFCI units are shipping now. There are a few AHJ that are working off 2011
code (including most of Alaska).
The TL (240 VAC) with integrated AFCI should be shipping when the new -22 (3k -
5k) come.
These are the units with the EPS module.
Thanks
SMA America, LLC
Steve Jefferson
I've run a 3 HP well pump off a pair of Outbacks, but make sure you have
plenty of battery behind it. We had shut downs from low voltage, when
the batteries were at 50% charge from the starting surge.
My experience with Magnum has been good, and they have even more surge
current than the
You might also check
Power Source
Jay
Peltz power
Sent from my iPad
On Oct 15, 2012, at 8:32 AM, Dan Fink danbo...@gmail.com wrote:
We have had great luck with Iota. More reasonably priced than Xantrex, too,
but not as many flashy lights. They also work great as 12VDC power supplies
for
Anything more than a few millivolts.
On 10/15/12, mac Lewis maclew...@gmail.com wrote:
How much voltage drop indicates a problem?
On Mon, Oct 15, 2012 at 8:13 AM, Chris Mason
cometenergysyst...@gmail.comwrote:
You should see a voltage drop across the connections if they are faulty.
On
I had one wholepallet of "famous brand" that were charged backwards.
The positive post (as charged) WAS painted red, but the plastic case "+" and "-" markings were by the wrong posts.
Before I realized the error, I installed 8 of these at a customer, going by the red painted post, not noticing
You will need to get a 1000 amp 100 mV shunt. I did just what you're
wanting to do on a 4 SW4048 inverter system once.
I built my own buss out of copper bar, but you might be able to double
up the Midnite buss on to the bigger shunt.
I then used paralleled 4/0 cables for the battery side of
Funny, happened to us, too, some years
back... six sets of 2V cell pairs in a 24V bank, with one case
showing 0.05 volts DC, the difference in resting voltage between
the two cells. We opened up the cover (the case was red, as I
recall, Mick), disconnected the
Hi Wrenches,
Here is yet another 120% rule question as it relates to center fed main
panels. 2011 NEC 705.12 deals with inverter point of connection and
705.12(D)(7) reads:
*Inverter Output Connection.* Unless the panelboard is rated not less than
the sum of the ampere ratings of all
Mac,
Well, maybe not yet.
If you expect to run consistently high current, you will want a
shunt larger than 500A, as according to Ralph Heisey at Bogart
Engineering, most shunts can handle about 2/3 of their rated
capacity for extended duration,
Hi, Mechanix~
Bill Dorsett polled the group about recommended battery chargers for
connection to a generator. Iota brand is the successor to Todd brand; I
believe Iota bought the designs, tooling, etc. and these have appeal
because of the relatively low cost per rated amp. They seem generator
Thanks Aaron, but I need one that goes to 15.5 or 16V for equalizing the
bank. Just got this back from Iota:
Iota does not make any chargers that go to 15 volts output for equalizing.
Thank you
Iota Engineering
Xantrex TruCharge 20 at least has an equalize setting, though I don't know
There is a potentiometer on the board of the IOTA chargers that used to be
assessable through a hole in the cover. I adjusted a new one two weeks ago
and had to open it up to get at the pot. Adjusts up 15.6VDC with plug in and
14.8 with the jumper plug out. Some of the older models would adjust
How about an off grid inverter/charger that most
off-griders would normally have ?? Almost
any of the typical off grid I/C would do a much
better job at charging. I would think that any
el-cheap-o 12V inverter would balk at seeing much
over 15V anyway.
boB
On 10/15/2012 11:27 AM,
If you back feed at the end of the bus bar where the main is connected
to the middle of the bus bar, the back fed breaker cannot overload the
bus bar between the main and the back fed breaker, but it would be
possible to overload the other side of the bus bar - it's being fed by
both the main
Kent, Brian,
It still seems like a grey area to me. I think that from a conservative
point of view that we cannot apply the 120% rule to a center fed panel. In
my experience, AHJs around the Bay Area know a little about the 120% rule
but haven't thought about it to this level of detail. In
Dan,
I checked out the Tigo website, and found nothing there to suggest
that these were intended for off grid battery charging
applications. A round-the-world sailboat is off grid. Are you
suggesting that these will work in battery charging applications?
If
boB,
The limit of 80-volts was to make an exception for single module devices
like micro-inverters and for 48-volt battery systems and smaller. A change
controller operating above 80V would be required to have an AFCI whether on
or off grid if the array is mounted on a building.
Bill.
August,
I'm not really worried about residential center fed buswork since the 120%
exception only applied residential prior to the 2008 NEC and the location of
the OCPD was not specified.
The location of the OCPD was specified in the 2008 NEC to address commercial
panelboards that are run
Hi Allan
I have a client who did indeed install Tigo
with a outback CC and it all works well
I don't recommend it for the boat. Too much to
go wrong.
Jay
Peltz power
Sent from my iPhone
On Oct 15, 2012, at 12:46 PM, Allan Sindelar al...@positiveenergysolar.com
wrote:
Dan,
I checked out
I was wondering about battery charging using Tigos. I have a few spare Tigos
and modules for them lying around and was thinking of using them with a magnum
to run my radon fan and chest freezer.
Since the Tigos have MPPT built in, would the use of a MPPTing charge
controller be unnecessary?
Hey Alan, I checked in with Tigo tech support to reconfirm. they assure me yes, this generation of optimizer (Basically a module level MPPT DC to DC converter) does work with MPPT controllers for battery charging. I pressed them for a cut sheet or statement outlining their performance in battery
Dan,
Starting around 1999 with the successful introduction of the RV
Power Products (long since renamed Blue Sky Energy) Solar Boost
50, we did lots of controller upgrades, as that 15-20% winter
boost was a cheap and effective upgrade. For a few years we
Hi MIck,
I often see your explanation for absorption charge phase. Consider this: While
charging, current is applied without voltage regulation (CC). At the charge set
point, PWM control (CV) takes place to regulate voltage. There is no control
over current as the battery internal resistance
When I get home I will send you the link to my Tigo system on my home. I just
installed it, but the few times I fired it up, I saw increased production.
(230W from 210W modules.) I have the inverter monitored as well, so I'm
thinking of running the tigos for a year and then run the system
Hi there,
Just to clarify, we are talking about a battery-less grid tie system.
We want to have the choice to divert the AC available for export to an AC
load for example a pump or a thermal store.
The reason for this is that the tariff for export may be only 10c and the
unit cost to
Good answer, Mick. I've got an old Trace DR 1512 with charger, and these
people have a very small inverter plugged into a wall outlet (old cigar plug
wall outlets were max'd at 60watts). So they don't do much with it but might
want some ability to run AC loads. I'd sell it to them cheap and they
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