Steven,
A Line Side Tap, by nature, allows us 100% of the Service Entrance Conductor
Ampacity. This typically ~equals Main Breaker rating, but is regardless of
the Main Breaker rating or size of Loads, it's about the conductor. NEC
recognizes that our systems produce power, not draw it, so downs
I saw the fault "high ac input voltage" at least three times. I changed
out the boards in the inverter TWICE, both times freebies from OutBack. I
checked battery spec. grav., programmed it and re-programmed it, talked ad
nauseum on the phone with tech supportnothing. It was OutBack tech
support
If you only need to log V, A and Hz (for this need anyway) you would do fine
with the Fluke 289. I have one and love it. It will download to a computer too
with FlukeView Forms via the IR port and interface cable (comes with
FlukeView). This is a VERY fast meter and will capture anything that I
I've been considering a Fluke 345 for some time
http://www.davis.com/catalog/product_view.asp?sku=2000338&pfx=
It does data logging of power issues,and is very easy to carry around and work
with (basically a clamp on meter with electrodes too)
Do you think that would work?
R. Walters
r...@solar
What faults were you seeing when it wouldn't sell? Was grid voltage or
frequency off? Or was it power factor issue?
I might need some technical ammo to persuade the Utility into swapping their
transformer.
R. Walters
r...@solarray.com
Solar Engineer
On Mar 31, 2010, at 1:32 PM, penobscotso.
Boy I appreciate the many replies on this.
To answer your curiosity,Kirpal, the customer lived off grid originally,
brought in the grid after 5 years, but only used it as backup with his previous
SW system.
Now he likes to play with it, as he's also an EE. (He likes to cycle the
batteries occasi
I suspect our performance issues are software related as well. Obviously
Outback didn't optimize performance of their inverters for such a large
battery. It would be nice to be able to understand and adjust some of those
back door parameters, though.
We've learned more about the problem: it appe
Hans,
There's a backup load panel that some house loads are transferred to that's fed
from the 60A line side tap. Under normal operation they are fed from the PV
with the remaining power coming from the line side tap off from grid. To be
thorough, one would have to make sure that the backup l
Nick –
It would be great if a load exception could be made but I’ve never heard of it.
Do you have any references to the code? -August
August Goers
Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.1525
F: 650.244.9167
aug...@luminalt.com
From: re-wrenches-boun...@lists.re-wrenches.org
[
Ray, Believe me when I say I have gone through all the exercises described
so far by our esteemed colleagues. I think you will find the problem is
with the customers transformer. I continue to make impressive amounts of
kwh since the swap out last week.
Daryl
> Battery bank is in great shape,
I feel confident that the load will not be over 80 Amps at any time, and
therefore do not think that a service upgrade is necessary. If the load is
increased in the future (as in any situation,) the panel may need to be
upgraded in the future. By 'legal,' I assume you mean that it is appro
Ray,
The only fault warning we got was the batteries (a 48v, 1,000 amp hr
HuP) were boiling and using a lot of water, and expected power
production was down. OutBack said this problem was corrected with
new software. The system was installed in 11/2005 and the inverters
replaced in spri
Steven,
I don't think the 60A disconnect for the line-side tap would qualify as part
of the required 100A rating for the residential service. You aren't using it
to supply the house loads. Unless I'm missing something, your proposal
limits the residential service load to only 60A. I suppose you cou
230.80
"Where the service disconnecting means consists of more than one switch or
circuit breaker, as permitted by 230.71, the combined ratings of all the
switches or circuit breakers used shall not be less than the rating required by
230.79"
Steven Lawrence
Ventilated, but small enclosure. Definitely a possibility to consider. What
fault warnings were you getting?
Thanks,
R. Walters
r...@solarray.com
Solar Engineer
On Mar 30, 2010, at 5:58 PM, Randy Brooks wrote:
> Ray,
>
> Is the inverter in a ventilated space? We had a similar problem with
Battery bank is in great shape, is brand new HUP set.
Thanks,
R. Walters
r...@solarray.com
Solar Engineer
On Mar 31, 2010, at 6:19 AM, t...@hughes.net wrote:
> Ask the customer to ck the cells for bubbling during the charging period to
> make sure the cells all are good OR Isolate the batte
Anything less than a 100A main is a no-go a for residential service:
NEC 230.79(C):
"For a one-family dwelling, the service disconnecting means shall have a
rating of not less than 100 amperes, 3-wire."
Also, I don't think any AHJ is going to accept a load calculation in lieu of
proper bus sizing
Why can't you do a line side tap and downsize the main breaker? Use a 60A main
disconnect for the line side tap, and use a 60A main breaker for the service
panel. That's similar to what I did except I downsized the 200A main to a
150A. This also allowed a manual interlock kit in the main servi
We recommend to the customer to upgrade their service if it's not adequate
(old/outdated/too small). In the grand scheme of things, that's a small
add-on. Whenever there's a questionable interconnect, it's always prudent
to get a pre-approval from your AHJ and your utility. A supply side tap may
Nick,
The answer would be technically yes, but with limitations and I'd question
whether there would be any benefits, only downsides.
To elaborate -- yes it's possible to install two XWs on two different
batteries, using two different arrays and charging sources, but sharing the
same AC grid and
Downsize the main breaker? I would if I could, but the customer only has
100 Amps now, and the solar is fed with two breakers, a 30A and a 40A. So to
be under 120Amps, I would have to size the main to 50 Amps, which may be
problematic.
I can also do the line side tap, but had heard tha
Hi Nick,
I'm curious why the two banks of batteries?
jay
peltz power
On Mar 30, 2010, at 10:58 PM, Nick Vida wrote:
> Hi wrenches,
>
> I am looking at the xantrex XW system with 2 inverters, and I asked their
> tech support if it is possible to have 2 inverters synced to the same grid
> and
Ask the customer to ck the cells for bubbling during the charging period to
make sure the cells all are good OR Isolate the battery banks to make sure
there isn't a dead cell the OBs are trying to charge. BB1 one day, BB2 the next
& so on.
Sent via BlackBerry by AT&T
-Original Message-
I have a company that will rent a Fluke power logger 1735 for ~ $300/ month.
I have been using one to measure just this issue. I found the unit was easy to
use + all the data logged can be downloaded. Logging can be as short as 1/2
second to 40 hours. Ck out what one can log, it is quite a bit
Has anyone had any experience with a Magnum 4024 inverter
(sine wave) and breaker box mounted ground fault breakers?
A customers fellow just wired a ground fault outlet and it flashes on and
off with the inverter on, not in sleep mode.
I don't know if it's wired correctly or the brand but th
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