I used to have a WW II aircraft altimeter (out of an Aircobra) installed
in a Diesel LandRover when I first started pump work years ago. The
instrument took all the guesswork out of sizing pumps, and let me know
when the naturally aspirated Diesel was going to be making more smoke
than horsepow
William and all,
It is new in the 2008 NEC version.
Phil
Phil Schneider, system engineer
Creative Energies
www.CreativeEnergies.biz
307.332.3410 Lander, WY
208.354.3001 Victor, ID
From: William Miller
Reply-To: RE-wrenches
Date: Tue, 27 Jan 2009 17:44:44 -0800
To: RE-wrenches
Subject: Re:
Phil:
In which code version is the passage below found? I have the 2002 and the
2005 on CD Rom and it is in neither. As such, local inspectors are not
requiring any protection of accessible conductors. As such, our wire guard
is a voluntary upgrade and consequently, hard to justify. Parent
Phil.we have been wrestling with this issue also.our inspector
recommended some adhesive wire guards that would stick to the rails of the
modulesI haven't seen one of these systems yet but the inspector said he
has some wiring protected like this for over 20 years...if i get more
in
The most fun I ever had was reverse scamming two of these scum-bags. I
communicated with them over time and convinced them they had an "open
account" with us but we needed to validate the account. I got them to
wire me $20 cash so I could confirm the contact information, address,
blah, blah
William,
Your techniques look very clean and long lasting thanks for the link. Do
your inspectors consider the 4² aluminum wire guard as rendering the wiring
inaccessible? Anybody else have feedback from their inspectors? Thanks
again.
Phil
Phil Schneider, system engineer
Creative Energies
Dana,
You didn't mention anything about current, THD, or physical configuration.
I'd take a look at Digikey. Most of what they have is pre-molded, with power
cords, not naked transformers with solder lugs. They sell in quantities of 1
ea to 100 ea. If you need more than 100 ea, they still might
I have used the IBEX too big and costly. I am looking for small and cheap.
Thanks -
Dana Orzel
Great Solar Works, Inc
www.solarwork.com
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
"I'd put my money on solar energy. I hope we don't have to wait 'til oi
Hi WIlliam, I have a small hand held device called an Alba Windwatch made by
Silva for this job and calculating hydro heads. The specs claim an accuracy to
+- 1.0m. It uses barometric pressure and so far I have found it pretty good.
Only downside is it is not waterproof so falling in streams
I recall that the Wattsun trackers use a 120-24 switching power supply. They
are rated at 5A as used on those big tracker drives but the mfgrs www site had
a wide selection of sizes.
http://www.wattsun.com/pdf/Wattsun_Controller_Power_Supply_Considerations.pdf
Jim Duncan
North Texas Renewable E
http://mpandc.com/practices/Technical_Procedures/PV_wiring/PV_wiring.html
At 02:24 PM 1/27/2009, you wrote:
Wrenches,
In regards to 690.31 (A) which requires readily-accessible PV source and
output circuits above 30 V to be installed in a raceway, have any of you
come up with a method you t
Hey there All -
I am looking for a wholesale source for 5 watt & 20 watt 120VAC to 24VAC
transformers, I need them for providing power for Tekmar controllers.
Thanks -
Dana Orzel
Great Solar Works, Inc
www.solarwork.com
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
Wrenches
I was looking at the Global Spec newsletter in my inbox before I deleted it
when a picture of a kW hr meter caught my eye. I followed the link to
http://www.enetics.com/ to see what their PowerNode Recorders were all about.
After an inquiry to Enetics support staff , a quick reply told
The elevation accuracy of commercial GPS units is horrible, I've seen them
off by more than 100 feet and they are not reliable at all for the requested
usage in this instance. Surveyors use GPS units that are accurate in both
horizontal and vertical axis measurements but they use radio frequenc
Hi William,
My GPS unit is accurate to about 10' on the barometric side.
Mine is Garmin Etrex summit
I use it all the time for hydro and water pumping.
jay
peltz power
On Jan 27, 2009, at 1:46 PM, William Miller wrote:
Jay:
Accurate enough to size water pumping systems. I imagine 3 mete
A caution to all. There are various types of GPS units, with varying
accuracies. The most accurate are spec'd at around +/- 6 feet. I have a
Garmin Etrex and under normal circumstances it delivers at that spec or
better (+/- 3 feet). Near tall buildings or in a steep canyon, the accuracy
goes to po
Wrenches,
In regards to 690.31 (A) which requires readily-accessible PV source and
output circuits above 30 V to be installed in a raceway, have any of you
come up with a method you think works well and is cost-effective? I know
this was discussed a while back, I¹m wondering if anybody has done t
If you know someone who either paraglides or hanglides or is a sailplane
pilot; today's pilots fly with electronic flight log & variometers that are
+/- 3 to 6 feet. If you measure the low and then proceed to the high point
next, These units work off of barometric pressure and are quite reliable,
William,
Topographic maps are great if your familiar with them. A laser if you can
afford it or the best I have heard of is fill a tube or pipe with water from
the pump to your tank and measure the psi at the base of it. The calculation
is 2.31 feet of lift for every psi. Not everyone has their pi
Jay:
Accurate enough to size water pumping systems. I imagine 3 meters total,
or +/- 1.5 meters. I don't need absolute measurements, just relative
between two points.
William
At 01:42 PM 1/27/2009, you wrote:
Hi William,
What sort of accuracy are you needing?
jay
peltz power
On
Hi William,
What sort of accuracy are you needing?
jay
peltz power
On Jan 27, 2009, at 1:34 PM, William Miller wrote:
Does anyone have a foolproof tool to measure elevation? I have
researched GPS units recently. They are notoriously inaccurate for
elevation:
http://wiki.motionbase
I get them looking for engine rebuild kits as well as solar. If you run the
phone contacts or addresses in a google search you get nowhere or at least
not anywhere that would be logical.
If you do send a response you will get no logical answers to your questions.
Sometimes when things are slow at
Does anyone have a foolproof tool to measure elevation? I have researched
GPS units recently. They are notoriously inaccurate for elevation:
http://wiki.motionbased.com/mb/GPS_Unit_Elevation
Here are few more links with GPS fundamentals:
http://www.adventurenetwork.com/cgi-bin/adventurenetwo
I delete them all. You can usually tell by looking at the content,
spelling, etc. that they are bogus. I must get 15-20/week and it is a huge
waste of time to try to qualify them.
Roger Dixon
Certified Wind Site Assessor
Skylands Renewable Energy, LLC
908.337.2057 cell
908.730.6474 fax
r
Jeff,
Same hereI receive at least 12-15 of these a week.
And let me add one more "scam indicator" to your listthey
frequently have 2 first names.
My favorite was Roy Ray
Roy Butler
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer
Four Winds Renewable Energ
Friends:
I have many clients with remote power houses. One in particular has a
conduit between the power house and his residence with two spare 16 AWG
conductors. My brainstorm is to install a garden variety residential smoke
detector in his power house and a second one in his residence,
in
Hello Jeff et all:
For those who do take credit cards (and this has been said before): with
the first six digits of any credit card, you or your credit card processor
can contact the issuing bank, and they will contact the 'real' cardholder to
see if the transaction is on the up-and-up. We get
I don't know about you, but we are receiving about 2 or 3 scam emails every single day wanting to order solar modules, solar pumps, or other solar hardware. These are easy to spot because although each one is from a different "firm", here are the the things to look for that they all contain.
Usu
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