Re: [RE-wrenches] sanyo ba3 pro solar clamp source

[Jay Peltz]

They are different clips

Jay

Peltz power

Sent from my iPhone

On Dec 13, 2012, at 7:33 AM, Nick Vida  wrote:

> Hi wrenches,
> 
> do any of you have pro solar clamps for Sanyo hip-200ba3? I am in need of 80 
> mids and 30 ends. (I cant remember if there is only one clamp you use in both 
> applications?) This was that Sanyo module with the cuff on the edge by the 
> way.
> 
> Please contact me off list of you want to free up some warehouse space or 
> have a source for purchasing.
> 
> Thanks,
> 
> Nick Vida
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[RE-wrenches] sanyo ba3 pro solar clamp source

[Nick Vida]

Hi wrenches,

do any of you have pro solar clamps for Sanyo hip-200ba3? I am in need of 80 
mids and 30 ends. (I cant remember if there is only one clamp you use in both 
applications?) This was that Sanyo module with the cuff on the edge by the way.

Please contact me off list of you want to free up some warehouse space or have 
a source for purchasing.

Thanks,

Nick Vida___
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Re: [RE-wrenches] off grid PV connected to generator

[Greg Seelhorst]

August -

 

I've seen this scenario and it is not pretty like William suggests.  

 

>From what I've seen, the problem is not so much the power of the PV being
more than the generator, but moreso if the 1) generator is synchronous or
non-synchronous with the inverted AC (sine wave) and 2) if the loads are
less than the PV.   The generator will 'create' the voltage and run even if
there are zero loads.  The inverted AC (from PV) wants to push current onto
the 'local grid' and if there are no loads (nor heat sink diversion or
batteries to charge) then the current will try to backfeed the generator. 

 

My recommendation is to get a critical loads panel for the generator only
back-up, or go grid-tie with back-up using a Sunny Island, or the like, that
make the switch seamless during an outage.

 

Greg Seelhorst

Designer/Project Manager

NABCEP Certified Solar PV InstallerT

 

POSITIVE ENERGY, Inc.

510 S. Main Street

Las Cruces, New Mexico 88001
Cell: 575-650-1883

Office: 575-524-2030

FAX: 575-915-1788

 

  g...@positiveenergysolar.com
www.positiveenergysolar.com

 

 
http://www.positiveenergysolar.com/images/stories/PE-logotype.png

 

 

 

 

 

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Re: [RE-wrenches] off grid PV connected to generator

[Carl Emerson]

Hi there,

 

Does it not depend on the size of the generator?

 

I know that solar grid tie into a diesel generator derived grid is done on
several pacific Islands.

 

 

Carl Emerson

 


At 02:07 PM 12/12/2012, you wrote:

Hi Wrenches,

I have a quick theoretical question related to trying to run a standard grid
tied PV system off grid with a generator. A client called me wondering if he
could run his small Honda generator off grid connected to his load center
and then turn on his PV system. What would happen if more PV power is
produced than is being consumed? Anyone tried this?

Best,

August

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Re: [RE-wrenches] off grid PV connected to generator

[Mac Lewis]

I have watched this scenario happen with a the Sunny Island system AC
coupled to Sunny Island.  There is a parameter called maximum reverse
generator power that you can program.  It defaults at 100W I believe.  If
the current feeding into the generator is greater than this parameter, the
Sunny Island will disconnect the generator from the system.

 In your case, If the PV is able to sync to the generator and If the PV is
producing more than the loads can absorb, it will probably feed that
current into the rotor and induce higher voltage in the stator.  In the
best case scenario, it will knock the PV off-line, stabilize the voltage
and resync and continue the cycle.  Worst case, it will ruin your
generator.  I would recommend against it.

On Wed, Dec 12, 2012 at 3:24 PM, William Miller wrote:

> August:
>
> The apocalypse.  No, seriously, this is a scenario not supported by any
> manufacturer I know of.  The report we have is it is likely the generator
> will be damaged.  I recommend against it.
>
> William Miller
>
>
>
> At 02:07 PM 12/12/2012, you wrote:
>
>> Hi Wrenches,
>>
>> I have a quick theoretical question related to trying to run a standard
>> grid tied PV system off grid with a generator. A client called me wondering
>> if he could run his small Honda generator off grid connected to his load
>> center and then turn on his PV system. What would happen if more PV power
>> is produced than is being consumed? Anyone tried this?
>>
>> Best,
>>
>> August
>>
>>
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>


-- 



Mac Lewis

*

"Yo solo sé que no sé nada." -Sócrates
*
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Re: [RE-wrenches] Wind Turbine sources?

[boB]

FYI,  here is Bergey's link for this.

http://bergey.com/products/wind-turbines/bergey-excel-1

boB




On 12/12/2012 5:53 AM, Chris Daum wrote:

Jeremy:

The XL.1 is now sold with the Classic controller, so a 48V Bergey XL.1 is
quite a viable solution.

Best,

Chris Daum
Oasis Montana Inc.
406-777-4309




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Re: [RE-wrenches] off grid PV connected to generator

[William Miller]

August:

The apocalypse.  No, seriously, this is a scenario not supported by any 
manufacturer I know of.  The report we have is it is likely the generator 
will be damaged.  I recommend against it.


William Miller


At 02:07 PM 12/12/2012, you wrote:

Hi Wrenches,

I have a quick theoretical question related to trying to run a standard 
grid tied PV system off grid with a generator. A client called me 
wondering if he could run his small Honda generator off grid connected to 
his load center and then turn on his PV system. What would happen if more 
PV power is produced than is being consumed? Anyone tried this?


Best,

August



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[RE-wrenches] off grid PV connected to generator

[August Goers]

Hi Wrenches,



I have a quick theoretical question related to trying to run a standard
grid tied PV system off grid with a generator. A client called me wondering
if he could run his small Honda generator off grid connected to his load
center and then turn on his PV system. What would happen if more PV power
is produced than is being consumed? Anyone tried this?



Best,



August
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Re: [RE-wrenches] Small PV system/experiment for kids

[Jason Szumlanski]

Thank you all so much - wonderful ideas so far. My contact really likes the
fountain/pump idea. An indoor wall mounted fountain may also be
interesting, but I think a fountain next to a solar panel would be great
with a sign that explains what's going on.

*Jason Szumlanski*

*Fafco Solar*

*
*


On Wed, Dec 12, 2012 at 9:08 AM, Jason Szumlanski wrote:

> I have been approached by a local elementary school to develop a very
> small PV related experiment or system that is appropriate for children aged
> 9-11. Not having kids myself, I have no idea where to start with this. They
> are fine with mounting a PV panel on the roof, wall, or ground. They want
> something interesting and/or interactive that the students can monitor over
> time.
>
> Has anyone done something like this that would be suitable?
>
> Jason Szumlanski
> Fafco Solar
>
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Re: [RE-wrenches] Small PV system/experiment for kids

[Carl Emerson]

Hi there,

Check out these educational units that include miniature fuel cells and
solar...

http://www.fuelcellstore.com/en/pc/viewCategories.asp?idCategory=41



Regards
Carl Emerson
 

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Re: [RE-wrenches] Pilot Hole Template

[Jesse Dahl]

Thanks Chris,

I did the same as far as verifying layout of the beams, they are all the same 
center to center, so that helps when snapping lines on the roof, we've been 
using the quickmount jig for a few hours and haven't missed yet, so I think we 
got it.  

Thanks all!

Jesse  

Sent from my iPhone

On Dec 12, 2012, at 1:38 PM, "Chris"  wrote:

> Hi Jesse,
> We just finished a similar roof mount project but had the good fortune to be 
> going into 6x14 beams at “ 48” o.c. “. I put the on center dimension in 
> quotes loosely, and spent a couple hours prior to drilling the first hole 
> checking layout of the beams, directly under where we’d be drilling. The 
> ceiling rafters varied in layout an inch to 8” so this paid off!!!
> We used a 12” x 3/16” pilot bit, for our 8” Simpson SDS galv lags. I 
> eyeballed the angle into the beam, approx 10°, as we had 4 bolts in each 1.5” 
> pipe flange base to land into the beams. The trick is having the 8” lag bolt 
> follow the hole into the 2x6 pine decking and beam. This wasn’t as hard to do 
> as we first thought it would be, and didn’t miss a one.
> Hitting a 3x10 is going to be trickier, and your jig should help immensely.
>  
> Sincerely,
> 
> Chris Worcester
> Solar Wind Works
> NABCEP Certified PV Installer
> Phone: 530-582-4503
> Fax: 530-582-4603
> www.solarwindworks.com
> ch...@solarwindworks.com
> "Proven Energy Solutions"
>  
> From: re-wrenches-boun...@lists.re-wrenches.org 
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
> Sent: Wednesday, December 12, 2012 7:54 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Pilot Hole Template
>  
> Since this job was a spec job and the materials are already here, I need to 
> use the quick mount, so.  I took a quick mount, inserted a 1/2" EMT coupling 
> (after some filing) and stuck a 8" piece of 1/2" EMT in the coupling Nd 
> tightened it down. Checked it with my square to ensure it is coming out of 
> the flashing square to the world.  I haven't drilled a hole yet, but will 
> update.  
>  
> Jesse
> 
> Sent from my iPhone
> 
> On Dec 12, 2012, at 8:03 AM, Jason Szumlanski  wrote:
> 
> We just completed a job with Eco-65's. It took about 12 man-days to install 
> 200 of the base plates and L-Feet on a flat roof with wood blocks on a metal 
> deck with about 3" total from the rolled roof surface to the metal deck. We 
> custom-cut patches to go over the metal flashing supplied with the base 
> plate. 
>  
> Email me privately if you would like some pictures.
>  
> The materials are not cheap, but the installation was quite smooth and did 
> not require getting into the drop-ceiling or displacing office workers below. 
> We used 6" OMG extra heavy duty fasteners (part no. XHD006B).
>  
> Jason Szumlanski 
> Fafco Solar 
>  
> 
> On Wed, Dec 12, 2012 at 8:52 AM, Will White  
> wrote:
> Have you looked at EcoFastens Eco-65 plate?  We used them on a roof similar 
> to what you’ve got and went right into the 2x6 so we didn’t have to go into 
> the structural members.  They’ve got a flashing that will work with asphalt 
> roofs.
>  
> Just make sure you get the right length fasteners so it doesn’t go through 
> the finished ceiling inside.
>  
> Thanks,
> Will
>  
> __
> Will White
> Regional Field Operations Manager – New England
>  
> Real Goods Solar
> 64 Main St.
> Montpelier, VT 05602
> Tel: (802) 223-7804
> Cell: (802) 234-3167
> www.realgoodssolar.com
>  
>  
>  
> From: re-wrenches-boun...@lists.re-wrenches.org 
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
> Sent: Tuesday, December 11, 2012 9:01 PM
> To: RE-wrenches
> Subject: [RE-wrenches] Pilot Hole Template
>  
> Hello,
>  
> The roof I'm currently working on is not a typical roof.  The construction is 
> as follows:
>  
> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) 
> and on top of that 3/4" plywood with asphalt shingles on top of that.
>  
> I'd like to make a template to ensure that my pilot bit doesn't wander when 
> I'm going through the blue board.  If I miss the beams inside, the hole or 
> the lag would be exposed.  
>  
> Anybody run across this? Ideas?  I thought of maybe using a qucikmount 
> flashing, with a short section of EMT attached to help guide the bit
>  
> Thanks!
>  
> Jesse
> 
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Re: [RE-wrenches] DC, or not DC, Dat is Da question (Two Load Questions)

[Ray Walters]

I found that over the years, the bottom line correlates pretty well with 
total energy concerns.   I got away from DC and other super energy 
efficiency modes, as reliability is even more important, and non 
standard pumps just don't last near as long.  For off grid,  I usually 
spec Grundfos SQ pumps, as they are fairly standard, but don't have a 
starting surge.
People won't appreciate the efficiency much when they have to replace it 
in a couple of years.
If they're off grid, they're main focus can't be embodied energy, as 
they're probably driving a SUV long distances every day.  Also, 
batteries are pretty bad, when compared to a grid tie PV system. I 
studied my energy usage overall, and found that off grid wasn't saving 
the planet, when I was driving 20K miles/ year.  I moved into the city, 
fixed up an old home, and ride a bicycle more.  My overall foot print is 
less than building a new "efficient" home out in the vanishing wilderness.
I've tried it all, and that's just where I landed for now.  I'm 
currently working on an off grid PV charging system for a customer's 
Chevy Volt, though, so I'm always open to new things.


Ray Walters

  On 12/11/2012 10:10 PM, toddc...@finestplanet.com wrote:


this brings up a probably off topic subject regarding efficiency. i 
have always considered efficiency and conservation to be job one... 
especially on off grid systems... but with modules so inexpensive... 
does this still make sense? for example, i have an off grid customer 
who i suggested get a lorentz pump for his well. yes, the well 
produces around the same gpm as it used to, now only using about 15% 
of the power... but the cost to accomplish that was absurd, and that 
money could have been invested in more modules, which would also mean 
less winter generator run time... but manufacturing modulesis not 
light in the resource consumption department either.


so my question is: do you other wrenches just look at the bottom line, 
short term costs for more efficient appliances compared to more 
modules to power the old inefficient gear... or do you take the added 
step to include embedded energy... and if so can you share the 
calculation process?


thanks,

todd

On Tuesday, December 11, 2012 10:55am, "Larry Crutcher, Starlight 
Solar Power Systems"  said:


Why would one specify DC voltage appliances or lighting for off grid 
systems today when we have sub-buck-a-Watt PV solar power?  If you 
have space, you can make the added power that conventional AC 
appliances draw for very low cost. It could even be argued that the 
cost for DC items, wiring, distribution gear and labor will cost much 
more than simply adding more PV solar and staying all AC.
I don't like wasting resources and I understand old school thinking 
when PV modules were very expensive, but with high efficiency AC 
appliances and low cost inverters and PV modules, does it still make 
any sense? Shine some light on my thinking.


Larry Crutcher
Starlight Solar Power Systems


On Dec 10, 2012, at 9:12 PM, Allan Sindelar wrote:

Wrenches,
We still try to encourage prospective off grid customers to do a full 
load analysis as an initial step in the system design process. To the 
point:


1) What is a good watt-hours/day figure to use for a typical, modern, 
new, carefully chosen, fairly large conventional AC chest freezer, if 
kept in a heated indoor location? Assume 65 degrees and seldom opened.


I will encourage that the freezer be located in a shaded, protected 
outdoor location, in order to greatly reduce winter energy 
consumption, but I need a good base figure to work with.


The proposed system will most likely be 48Vnom, so a Sundanzer or 
similar DC freezer is out.


2) Same question for a ceiling fan, for general slow circulation of 
winter heat. The energystar.gov  list gives 
relative cfm efficiency but not wattages. Is 55W still a good figure 
to use as a default?



I have attached a condensed energystar.gov  
list for the freezers, but wonder what other off grid Wrenches 
typically use. Also, I'm not sure that Wrenches posts allow 
attachments, so this may not appear with my message.


Thank you,
Allan
--
*Allan Sindelar*
al...@positiveenergysolar.com 
NABCEP Certified Photovoltaic Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
*Positive Energy, Inc.*
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
*505 424-1112*
www.positiveenergysolar.com 

*
*


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Re: [RE-wrenches] Small PV system/experiment for kids

[Ray Walters]

Array direct is definitely better as Stephen points out, and I've built 
units that run a fan other visibly moving device.  Definitely don't want 
to roof mount the module, as others pointed out, you want the kids to be 
able to experiment with angles and shading.  Throwing in some analog 
meters for current and voltage is usually a good idea too.
Keep it to 12 v, and forget about NEC, the kids want to see the complete 
circuit.  Array direct with a 10 to 20 watt module doesn't even need a 
fuse (its only about an amp)
I've also used board mounted european screw lug connectors, and then had 
the kids strip wires and tighten the connections with a screw driver.  
For that age group, you'd be surprised how capable some of them are, and 
also how short an attention span others have.I keep a loose 
curiculum plan, so that I can adjust the demonstration to the kids that 
day.   Less attention,  then we skip the wiring, for example.


Ray

On 12/12/2012 8:39 AM, Stephen Kane wrote:

Jason,

Similar to Karl's suggestion, we have built a few education systems with a
small PV module direct to a 12 VDC bilge/sump pump like the Rule models
(with some fusing and disconnecting means of course).
Showing movement of water when the module is in clear sun vs partially or
completely shading the module seems like an effective way to demonstrate to
kids how solar works with a direct load.
The whole setup is pretty simple and affordable.

Stephen Kane
Kane Solar
Lyons, CO

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Wednesday, December 12, 2012 7:58 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Small PV system/experiment for kids

This is for older kids, but may help.  I did a project for a 7th - 10th
grade science class.  The school wanted one module and batteries, but I
talked them out of any batteries, and they went with a small awning mount
array and grid tied it with weather station, temp and irradiance meters
along with monitoring.  I created a small week long curriculum for the
teachers and walked them through the system using that curriculum.  Might be
a little more than you're looking for...

Jesse

Sent from my iPhone


Hi Jason,
When I was in fifth grade I built a little PV project. It consisted of a
very small module (smaller than a dollar bill) and a tiny dc motor mounted
in a box with string hooked up to it, and some weights. I demonstrated how
shading and irradiance levels affect how much weight the motor could lift. I
received an 'A'.

Karl Jaeger
LightWave Solar Electric


On Dec 12, 2012, at 8:08 AM, Jason Szumlanski  wrote:


I have been approached by a local elementary school to develop a very

small PV related experiment or system that is appropriate for children aged
9-11. Not having kids myself, I have no idea where to start with this. They
are fine with mounting a PV panel on the roof, wall, or ground. They want
something interesting and/or interactive that the students can monitor over
time.

Has anyone done something like this that would be suitable?

Jason Szumlanski
Fafco Solar
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Re: [RE-wrenches] Pilot Hole Template

[Chris]

Hi Jesse,

We just finished a similar roof mount project but had the good fortune to be 
going into 6x14 beams at “ 48” o.c. “. I put the on center dimension in quotes 
loosely, and spent a couple hours prior to drilling the first hole checking 
layout of the beams, directly under where we’d be drilling. The ceiling rafters 
varied in layout an inch to 8” so this paid off!!!

We used a 12” x 3/16” pilot bit, for our 8” Simpson SDS galv lags. I eyeballed 
the angle into the beam, approx 10°, as we had 4 bolts in each 1.5” pipe flange 
base to land into the beams. The trick is having the 8” lag bolt follow the 
hole into the 2x6 pine decking and beam. This wasn’t as hard to do as we first 
thought it would be, and didn’t miss a one.

Hitting a 3x10 is going to be trickier, and your jig should help immensely. 

 

Sincerely,

Chris Worcester

Solar Wind Works
NABCEP Certified PV Installer
Phone: 530-582-4503
Fax: 530-582-4603
www.solarwindworks.com  
ch...@solarwindworks.com
"Proven Energy Solutions"

 

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Wednesday, December 12, 2012 7:54 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Pilot Hole Template

 

Since this job was a spec job and the materials are already here, I need to use 
the quick mount, so.  I took a quick mount, inserted a 1/2" EMT coupling (after 
some filing) and stuck a 8" piece of 1/2" EMT in the coupling Nd tightened it 
down. Checked it with my square to ensure it is coming out of the flashing 
square to the world.  I haven't drilled a hole yet, but will update.  

 

Jesse

Sent from my iPhone


On Dec 12, 2012, at 8:03 AM, Jason Szumlanski  wrote:

We just completed a job with Eco-65's. It took about 12 man-days to install 200 
of the base plates and L-Feet on a flat roof with wood blocks on a metal deck 
with about 3" total from the rolled roof surface to the metal deck. We 
custom-cut patches to go over the metal flashing supplied with the base plate. 

 

Email me privately if you would like some pictures.

 

The materials are not cheap, but the installation was quite smooth and did not 
require getting into the drop-ceiling or displacing office workers below. We 
used 6" OMG extra heavy duty fasteners (part no. XHD006B).

 

Jason Szumlanski 

Fafco Solar 

 

On Wed, Dec 12, 2012 at 8:52 AM, Will White  wrote:

Have you looked at EcoFastens Eco-65 plate?  We used them on a roof similar to 
what you’ve got and went right into the 2x6 so we didn’t have to go into the 
structural members.  They’ve got a flashing that will work with asphalt roofs.

 

Just make sure you get the right length fasteners so it doesn’t go through the 
finished ceiling inside.

 

Thanks,

Will

 

__

Will White

Regional Field Operations Manager – New England

 

Real Goods Solar

64 Main St.

Montpelier, VT 05602

Tel: (802) 223-7804  

Cell: (802) 234-3167  

www.realgoodssolar.com  

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Tuesday, December 11, 2012 9:01 PM
To: RE-wrenches
Subject: [RE-wrenches] Pilot Hole Template

 

Hello,

 

The roof I'm currently working on is not a typical roof.  The construction is 
as follows:

 

2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) and 
on top of that 3/4" plywood with asphalt shingles on top of that.

 

I'd like to make a template to ensure that my pilot bit doesn't wander when I'm 
going through the blue board.  If I miss the beams inside, the hole or the lag 
would be exposed.  

 

Anybody run across this? Ideas?  I thought of maybe using a qucikmount 
flashing, with a short section of EMT attached to help guide the bit

 

Thanks!

 

Jesse


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Re: [RE-wrenches] Small PV system/experiment for kids

[penobscotsolar]

I donated some 12 watt solar panels to the local grammar schools in my
area and got a call from one of the teachers with the same question. The
panel was very over sized for the project, but simply taking a small dc
fan (or a d motor with blades (propeller?) attached, combined with a
colorful sheet of mylar with long cuts in it to give it "fingers" and
putting the whole thing in a classroom window was a very effective
illustration. When the sun came out fully the mylar strands really drew
the kids eye and illustrated that solar worked. It is simple, effective
and inexpensive and great for young kids. I suspect it could be done with
a very small solar panel of a couple of watts. you just need to match the
voltage of the "fan" to the panel.

Daryl


>
>
> Jason,
> If you want a little self contained display that is interactive you could
> use a high wattage AC light focused on a small 10 or 20 watt module. Put
> the light on a rheostat the kids can control. Use a computer fan to the
> module with a clear plastic tube sealed around it. Drop a ping pong ball
> in the tube. By varying the AC light intensity the ball rises and falls in
> the tube. If the tubing is sized properly the ball will rise up out of the
> tube at full fan speed and be suspended in mid air a couple of inches
> above the top of the tube because the spherical shape perfectly divides
> the rising column of air around the ball. It remains suspended above the
> tube perfectly and is guided back into the tube by the falling pressure of
> rising air surrounding it.
> A neat little display that lets kids (and adult kids) see instant cause
> and effect of the power of light.
> Nathan Jones
> Power Source Solar
>
>
> --
> On Wed, Dec 12, 2012 8:08 AM CST Jason Szumlanski wrote:
>
>>I have been approached by a local elementary school to develop a very
>> small
>>PV related experiment or system that is appropriate for children aged
>> 9-11.
>>Not having kids myself, I have no idea where to start with this. They are
>>fine with mounting a PV panel on the roof, wall, or ground. They want
>>something interesting and/or interactive that the students can monitor
>> over
>>time.
>>
>>Has anyone done something like this that would be suitable?
>>
>>Jason Szumlanski
>>Fafco Solar
>
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Re: [RE-wrenches] off-grid permitting problem

[Kent Osterberg]

These code references should be all that is necessary to put the 
inspector on the right path. His requirement that the source be capable 
of 100 amps clearly conflicts with the intent of 690.10(A); it makes 
clear that the inverter system only needs to be large enough to operate 
the single largest load that it is intended to operate. Thus it is 
permissible for combinations of loads to overload the inverter and cause 
a nuisance shutdown.


You might also ask if he'd be happy with a utility service provided by a 
15-kVA transformer. While capable of substantial overloads, it is only 
rated to provide 63 amps continuously. Most 200-amp service panels don't 
really have 200 amps available except for short durations.


Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882

On 12/12/2012 4:43 AM, Jason Szumlanski wrote:

See 690.10, 690.1, and 690.3.


*Jason Szumlanski*//

/Fafco Solar/



On Wed, Dec 12, 2012 at 1:00 AM, William Miller 
mailto:will...@millersolar.com>> wrote:


Jeff:

There is a code passage that specifically states that one does not
need to provide full rated ampacity to a service.  I am sure you
can find it.

Find a way to prove, mathematically, that the system planned will
provide adequate power.  Create or find a spreadsheet listing all
appliances and wattages and system watt hours provided.  Dress it
up, put your logo on it and sell it to the building department.

William Miller




At 07:52 PM 12/11/2012, you wrote:

Content-Type: multipart/alternative;
boundary="=_NextPart_000_0006_01CDD7F2.373D3CB0"
Content-Language: en-us


We have a client that just had assembled on his rural property
a pre-fab modular home with  "normal" wiring and 200 amp main
panel and meter base.  However, landowners around his property
will not grant access for electric utility to cross and he
needs to move in ASAP.  He realizes that some day he should be
able to resolve this utility access but until then he wants us
to do an off-grid "basic" solar system with generator backup
so he can at least power lights, well pump, and basic
appliances.   His budget will not allow a fully off-grid solar
system so we wanted to do reduced solar and battery system
with larger generator to fill in on bad solar days.  He does
have good solar exposure and lots of cleared land, but figures
one day the solar and generator will become a backup system to
a future grid connection so does not want to spend any more
than absolutely necessary.

However ,this local inspector for this rural county has no
experience with solar and is expecting to see a 200 amp
service connection from the utility before allowing occupancy.
 He did hint that a 100 amp service connection may be allowed
but nothing less.  I know NEC does mention that a panel does
not have to be supplied with the amount of service capacity it
is rated for, but what other code issues can I point out to
get this accepted without getting into a pis- contest?

Thanks,

Jeff Yago


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Re: [RE-wrenches] Small PV system/experiment for kids

[Nathan Jones]

Jason,
If you want a little self contained display that is interactive you could use a 
high wattage AC light focused on a small 10 or 20 watt module. Put the light on 
a rheostat the kids can control. Use a computer fan to the module with a clear 
plastic tube sealed around it. Drop a ping pong ball in the tube. By varying 
the AC light intensity the ball rises and falls in the tube. If the tubing is 
sized properly the ball will rise up out of the tube at full fan speed and be 
suspended in mid air a couple of inches above the top of the tube because the 
spherical shape perfectly divides the rising column of air around the ball. It 
remains suspended above the tube perfectly and is guided back into the tube by 
the falling pressure of rising air surrounding it.
A neat little display that lets kids (and adult kids) see instant cause and 
effect of the power of light.
Nathan Jones
Power Source Solar


--
On Wed, Dec 12, 2012 8:08 AM CST Jason Szumlanski wrote:

>I have been approached by a local elementary school to develop a very small
>PV related experiment or system that is appropriate for children aged 9-11.
>Not having kids myself, I have no idea where to start with this. They are
>fine with mounting a PV panel on the roof, wall, or ground. They want
>something interesting and/or interactive that the students can monitor over
>time.
>
>Has anyone done something like this that would be suitable?
>
>Jason Szumlanski
>Fafco Solar

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Re: [RE-wrenches] Pilot Hole Template

[Jason Szumlanski]

You can get drill guide attachments that hold the drill perpendicular to
the roof surface. I've never used one on a roof, but it could be helpful...

http://www.sears.com/craftsman-drill-guide/p-00967173000P?prdNo=1&blockNo=1&blockType=G1


*Jason Szumlanski** *

*Fafco Solar*


On Tue, Dec 11, 2012 at 9:00 PM, Jesse Dahl  wrote:

> Hello,
>
> The roof I'm currently working on is not a typical roof.  The construction
> is as follows:
>
> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board)
> and on top of that 3/4" plywood with asphalt shingles on top of that.
>
> I'd like to make a template to ensure that my pilot bit doesn't wander
> when I'm going through the blue board.  If I miss the beams inside, the
> hole or the lag would be exposed.
>
> Anybody run across this? Ideas?  I thought of maybe using a qucikmount
> flashing, with a short section of EMT attached to help guide the bit
>
> Thanks!
>
> Jesse
>
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Re: [RE-wrenches] Pilot Hole Template

[Jesse Dahl]

Since this job was a spec job and the materials are already here, I need to use 
the quick mount, so.  I took a quick mount, inserted a 1/2" EMT coupling (after 
some filing) and stuck a 8" piece of 1/2" EMT in the coupling Nd tightened it 
down. Checked it with my square to ensure it is coming out of the flashing 
square to the world.  I haven't drilled a hole yet, but will update.  

Jesse

Sent from my iPhone

On Dec 12, 2012, at 8:03 AM, Jason Szumlanski  wrote:

> We just completed a job with Eco-65's. It took about 12 man-days to install 
> 200 of the base plates and L-Feet on a flat roof with wood blocks on a metal 
> deck with about 3" total from the rolled roof surface to the metal deck. We 
> custom-cut patches to go over the metal flashing supplied with the base 
> plate. 
> 
> Email me privately if you would like some pictures.
> 
> The materials are not cheap, but the installation was quite smooth and did 
> not require getting into the drop-ceiling or displacing office workers below. 
> We used 6" OMG extra heavy duty fasteners (part no. XHD006B).
> 
> Jason Szumlanski 
> Fafco Solar 
> 
> 
> On Wed, Dec 12, 2012 at 8:52 AM, Will White  
> wrote:
>> Have you looked at EcoFastens Eco-65 plate?  We used them on a roof similar 
>> to what you’ve got and went right into the 2x6 so we didn’t have to go into 
>> the structural members.  They’ve got a flashing that will work with asphalt 
>> roofs.
>> 
>>  
>> 
>> Just make sure you get the right length fasteners so it doesn’t go through 
>> the finished ceiling inside.
>> 
>>  
>> 
>> Thanks,
>> 
>> Will
>> 
>>  
>> 
>> __
>> 
>> Will White
>> 
>> Regional Field Operations Manager – New England
>> 
>>  
>> 
>> Real Goods Solar
>> 
>> 64 Main St.
>> 
>> Montpelier, VT 05602
>> 
>> Tel: (802) 223-7804
>> 
>> Cell: (802) 234-3167
>> 
>> www.realgoodssolar.com
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> From: re-wrenches-boun...@lists.re-wrenches.org 
>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
>> Sent: Tuesday, December 11, 2012 9:01 PM
>> To: RE-wrenches
>> Subject: [RE-wrenches] Pilot Hole Template
>> 
>>  
>> 
>> Hello,
>> 
>>  
>> 
>> The roof I'm currently working on is not a typical roof.  The construction 
>> is as follows:
>> 
>>  
>> 
>> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) 
>> and on top of that 3/4" plywood with asphalt shingles on top of that.
>> 
>>  
>> 
>> I'd like to make a template to ensure that my pilot bit doesn't wander when 
>> I'm going through the blue board.  If I miss the beams inside, the hole or 
>> the lag would be exposed.  
>> 
>>  
>> 
>> Anybody run across this? Ideas?  I thought of maybe using a qucikmount 
>> flashing, with a short section of EMT attached to help guide the bit
>> 
>>  
>> 
>> Thanks!
>> 
>>  
>> 
>> Jesse
>> 
>> 
>> ___
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Re: [RE-wrenches] Small PV system/experiment for kids

[Stephen Kane]

Jason,

Similar to Karl's suggestion, we have built a few education systems with a
small PV module direct to a 12 VDC bilge/sump pump like the Rule models
(with some fusing and disconnecting means of course). 
Showing movement of water when the module is in clear sun vs partially or
completely shading the module seems like an effective way to demonstrate to
kids how solar works with a direct load.
The whole setup is pretty simple and affordable.

Stephen Kane
Kane Solar
Lyons, CO

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Wednesday, December 12, 2012 7:58 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Small PV system/experiment for kids

This is for older kids, but may help.  I did a project for a 7th - 10th
grade science class.  The school wanted one module and batteries, but I
talked them out of any batteries, and they went with a small awning mount
array and grid tied it with weather station, temp and irradiance meters
along with monitoring.  I created a small week long curriculum for the
teachers and walked them through the system using that curriculum.  Might be
a little more than you're looking for...

Jesse

Sent from my iPhone


Hi Jason,
When I was in fifth grade I built a little PV project. It consisted of a
very small module (smaller than a dollar bill) and a tiny dc motor mounted
in a box with string hooked up to it, and some weights. I demonstrated how
shading and irradiance levels affect how much weight the motor could lift. I
received an 'A'.

Karl Jaeger
LightWave Solar Electric


On Dec 12, 2012, at 8:08 AM, Jason Szumlanski  wrote:

> I have been approached by a local elementary school to develop a very
small PV related experiment or system that is appropriate for children aged
9-11. Not having kids myself, I have no idea where to start with this. They
are fine with mounting a PV panel on the roof, wall, or ground. They want
something interesting and/or interactive that the students can monitor over
time.
> 
> Has anyone done something like this that would be suitable?
> 
> Jason Szumlanski
> Fafco Solar
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Re: [RE-wrenches] Pilot Hole Template

[Allan Sindelar]

  
  
William,
  Given that blueboard (extruded polystyrene) can be safely used as
  an insulation layer beneath and directly supporting batteries,
  crushing is simply not an issue, especially with plywood to spread
  out point forces. Blueboard has tremendous resistance to
  compression, although not being an engineer I can't quantify this.
  I have seen a ton of industrial cells resting directly on it,
  fully supported with only modest dimpling.
  Allan
  
  


Allan Sindelar
al...@positiveenergysolar.com
  NABCEP Certified Photovoltaic
Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com



 
  On 12/12/2012 4:54 AM, Jesse Dahl wrote:


  Benn,

If you were to look at the roof from the side, it would look like this: 2x6 tounge and grove (laid flat and exposed inside) foam board, 3/4 plywood, shingles.  I guess I'm looking for a way to ensure my bit goes in at the right angle, perpendicular to the beams inside. 

William,  Im not sure.  I was hired by a large electrical contractor to oversee this project.  The job required NABCEP and they didn't have anyone certified. These are all things that were not thought about before hand. My hope is that the 3/4" plywood will help, blue board is very hard to crush on its face, so I can only hope it holds, if not, I don't know what they will do.  

Jesse

Sent from my iPhone

On Dec 12, 2012, at 12:02 AM, William Miller  wrote:


  
Jesse:

How are you going to avoid crushing the foam when you tighten your fasteners?

William Miller


At 06:00 PM 12/11/2012, you wrote:


  Hello,

The roof I'm currently working on is not a typical roof.  The construction is as follows:

2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) and on top of that 3/4" plywood with asphalt shingles on top of that.

I'd like to make a template to ensure that my pilot bit doesn't wander when I'm going through the blue board.  If I miss the beams inside, the hole or the lag would be exposed.



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Re: [RE-wrenches] Small PV system/experiment for kids

[Jesse Dahl]

This is for older kids, but may help.  I did a project for a 7th - 10th grade 
science class.  The school wanted one module and batteries, but I talked them 
out of any batteries, and they went with a small awning mount array and grid 
tied it with weather station, temp and irradiance meters along with monitoring. 
 I created a small week long curriculum for the teachers and walked them 
through the system using that curriculum.  Might be a little more than you're 
looking for...

Jesse

Sent from my iPhone

On Dec 12, 2012, at 8:08 AM, Jason Szumlanski  wrote:

> I have been approached by a local elementary school to develop a very small 
> PV related experiment or system that is appropriate for children aged 9-11. 
> Not having kids myself, I have no idea where to start with this. They are 
> fine with mounting a PV panel on the roof, wall, or ground. They want 
> something interesting and/or interactive that the students can monitor over 
> time.
> 
> Has anyone done something like this that would be suitable?
> 
> Jason Szumlanski
> Fafco Solar
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Re: [RE-wrenches] Small PV system/experiment for kids

[Dave Click]

Jason, for 9-11 year-olds this curriculum may be useful as a starting 
point, and we've got some others for different age groups.

http://fsec.ucf.edu/en/education/k-12/curricula/sm2/index.htm

The "solar powered system" experiment is designed for a cell so we 
suggested the load be a small propeller. Obviously, this would be a bad 
idea with a 250W module since an unsuspecting kid would then be launched 
into space, but a small module and a pump could be a fun educational 
display.


On 2012/12/12 9:08, Jason Szumlanski wrote:

I have been approached by a local elementary school to develop a very
small PV related experiment or system that is appropriate for children
aged 9-11. Not having kids myself, I have no idea where to start with
this. They are fine with mounting a PV panel on the roof, wall, or
ground. They want something interesting and/or interactive that the
students can monitor over time.

Has anyone done something like this that would be suitable?

Jason Szumlanski
Fafco Solar


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Re: [RE-wrenches] Small PV system/experiment for kids

[Karl Jaeger]

Hi Jason,
When I was in fifth grade I built a little PV project. It consisted of a very 
small module (smaller than a dollar bill) and a tiny dc motor mounted in a box 
with string hooked up to it, and some weights. I demonstrated how shading and 
irradiance levels affect how much weight the motor could lift. I received an 
'A'.

Karl Jaeger
LightWave Solar Electric

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski
Sent: Wednesday, December 12, 2012 8:08 AM
To: RE-wrenches
Subject: [RE-wrenches] Small PV system/experiment for kids

I have been approached by a local elementary school to develop a very small PV 
related experiment or system that is appropriate for children aged 9-11. Not 
having kids myself, I have no idea where to start with this. They are fine with 
mounting a PV panel on the roof, wall, or ground. They want something 
interesting and/or interactive that the students can monitor over time.

Has anyone done something like this that would be suitable?

Jason Szumlanski
Fafco Solar
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[RE-wrenches] Small PV system/experiment for kids

[Jason Szumlanski]

I have been approached by a local elementary school to develop a very small
PV related experiment or system that is appropriate for children aged 9-11.
Not having kids myself, I have no idea where to start with this. They are
fine with mounting a PV panel on the roof, wall, or ground. They want
something interesting and/or interactive that the students can monitor over
time.

Has anyone done something like this that would be suitable?

Jason Szumlanski
Fafco Solar
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Re: [RE-wrenches] Pilot Hole Template

[Jesse Dahl]

The 2x6 are not the "beams" the beams are 3x10 laminated beams that hold the 
whole roof up, confusing I know.  The beams are what I will eventually attach 
to.  

I like the idea, that would allow the drill to stay "straight" when I drill my 
pilot hole. 

Thanks!

Jesse

Sent from my iPhone

On Dec 12, 2012, at 7:16 AM, benn kilburn  wrote:

> Jesse,
> Are the 2x6s the 'beams' you are referring to or are the 2x6s supported by 
> the beams you want to attach to?
> I think i realized what you were thinking with the QM flashing and EMT. 
> ...stick a ~1/2" EMT piece in the QM block and hold it perpendicular to the 
> roof.  Is that right?  You would still have to hold the EMT straight as well 
> as the drill.
> 
> What if you used a piece of plywood about the same size or a bit bigger than 
> the flashing and attach two 2x4s perpendicular and tall enough to allow your 
> drill and bit to 'guide' between them. Taper the 2x4s so the drill would have 
> a 'V' shape to guide thru.  Throw a block on the top to keep them from 
> spreading out.  This should keep your holes perpendicular with the roof/beam 
> as long as you are directly above the spot you want to hit.
> 
> That does sound like a non-typical roof.  Have fun!
> 
> Cheers,
> benn
> 
> DayStar Renewable Energy Inc. 
> www.daystarsolar.ca
> 780-906-7807 
> Certified Construction Electrician Solar Photovoltaic Systems Certified
> Certificate # 0007S
> HAVE A SUNNY DAY
> 
> 
> > From: dahlso...@gmail.com
> > Date: Wed, 12 Dec 2012 05:54:25 -0600
> > To: re-wrenches@lists.re-wrenches.org
> > Subject: Re: [RE-wrenches] Pilot Hole Template
> > 
> > Benn,
> > 
> > If you were to look at the roof from the side, it would look like this: 2x6 
> > tounge and grove (laid flat and exposed inside) foam board, 3/4 plywood, 
> > shingles. I guess I'm looking for a way to ensure my bit goes in at the 
> > right angle, perpendicular to the beams inside. 
> > 
> > William, Im not sure. I was hired by a large electrical contractor to 
> > oversee this project. The job required NABCEP and they didn't have anyone 
> > certified. These are all things that were not thought about before hand. My 
> > hope is that the 3/4" plywood will help, blue board is very hard to crush 
> > on its face, so I can only hope it holds, if not, I don't know what they 
> > will do.  
> > 
> > Jesse
> > 
> > Sent from my iPhone
> > 
> > On Dec 12, 2012, at 12:02 AM, William Miller  
> > wrote:
> > 
> > > Jesse:
> > > 
> > > How are you going to avoid crushing the foam when you tighten your 
> > > fasteners?
> > > 
> > > William Miller
> > > 
> > > 
> > > At 06:00 PM 12/11/2012, you wrote:
> > >> Hello,
> > >> 
> > >> The roof I'm currently working on is not a typical roof. The 
> > >> construction is as follows:
> > >> 
> > >> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue 
> > >> board) and on top of that 3/4" plywood with asphalt shingles on top of 
> > >> that.
> > >> 
> > >> I'd like to make a template to ensure that my pilot bit doesn't wander 
> > >> when I'm going through the blue board. If I miss the beams inside, the 
> > >> hole or the lag would be exposed.
> > > 
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Re: [RE-wrenches] Pilot Hole Template

[Jason Szumlanski]

We just completed a job with Eco-65's. It took about 12 man-days to install
200 of the base plates and L-Feet on a flat roof with wood blocks on a
metal deck with about 3" total from the rolled roof surface to the metal
deck. We custom-cut patches to go over the metal flashing supplied with the
base plate.

Email me privately if you would like some pictures.

The materials are not cheap, but the installation was quite smooth and did
not require getting into the drop-ceiling or displacing office workers
below. We used 6" OMG extra heavy duty fasteners (part no. XHD006B).

*Jason Szumlanski** *

*Fafco Solar*


On Wed, Dec 12, 2012 at 8:52 AM, Will White wrote:

>  Have you looked at EcoFastens Eco-65 plate?  We used them on a roof
> similar to what you’ve got and went right into the 2x6 so we didn’t have to
> go into the structural members.  They’ve got a flashing that will work with
> asphalt roofs.
>
> ** **
>
> Just make sure you get the right length fasteners so it doesn’t go through
> the finished ceiling inside.
>
> ** **
>
> Thanks,
>
> Will
>
> ** **
>
> *
> __
> *
>
> Will White
>
> Regional Field Operations Manager – New England
>
> ** **
>
> Real Goods Solar
>
> 64 Main St.
>
> Montpelier, VT 05602
>
> Tel: (802) 223-7804
>
> Cell: (802) 234-3167
>
> www.realgoodssolar.com
>
> ** **
>
> ** **
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jesse Dahl
> *Sent:* Tuesday, December 11, 2012 9:01 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Pilot Hole Template
>
> ** **
>
> Hello,
>
> ** **
>
> The roof I'm currently working on is not a typical roof.  The construction
> is as follows:
>
> ** **
>
> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board)
> and on top of that 3/4" plywood with asphalt shingles on top of that.
>
> ** **
>
> I'd like to make a template to ensure that my pilot bit doesn't wander
> when I'm going through the blue board.  If I miss the beams inside, the
> hole or the lag would be exposed.  
>
> ** **
>
> Anybody run across this? Ideas?  I thought of maybe using a qucikmount
> flashing, with a short section of EMT attached to help guide the bit**
> **
>
> ** **
>
> Thanks!
>
> ** **
>
> Jesse
>
> ___
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Re: [RE-wrenches] Wind Turbine sources?

[Chris Daum]

Jeremy:

The XL.1 is now sold with the Classic controller, so a 48V Bergey XL.1 is
quite a viable solution.

Best,

Chris Daum
Oasis Montana Inc.
406-777-4309 

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeremy
Rodriguez- All Solar Inc.
Sent: Tuesday, December 11, 2012 10:36 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Wind Turbine sources?

With news that Southwest Windpower has layed off some of its staff and that
they are discontinuing the Whisper line I wonder who will pick up the slack,
if anyone!
Perhaps Bergey will make their XL.1 in 48V. 
What turbine brands can the wrenches recommend?  
Sorry if this does not pertain to this list, Michael Jeremy All Solar CO,
USA Sent via BlackBerry. Sorry for typos and shorthand!
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Re: [RE-wrenches] Pilot Hole Template

[Will White]

Have you looked at EcoFastens Eco-65 plate?  We used them on a roof similar to 
what you've got and went right into the 2x6 so we didn't have to go into the 
structural members.  They've got a flashing that will work with asphalt roofs.

Just make sure you get the right length fasteners so it doesn't go through the 
finished ceiling inside.

Thanks,
Will

__
Will White
Regional Field Operations Manager - New England

Real Goods Solar
64 Main St.
Montpelier, VT 05602
Tel: (802) 223-7804
Cell: (802) 234-3167
www.realgoodssolar.com



From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jesse Dahl
Sent: Tuesday, December 11, 2012 9:01 PM
To: RE-wrenches
Subject: [RE-wrenches] Pilot Hole Template

Hello,

The roof I'm currently working on is not a typical roof.  The construction is 
as follows:

2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) and 
on top of that 3/4" plywood with asphalt shingles on top of that.

I'd like to make a template to ensure that my pilot bit doesn't wander when I'm 
going through the blue board.  If I miss the beams inside, the hole or the lag 
would be exposed.

Anybody run across this? Ideas?  I thought of maybe using a qucikmount 
flashing, with a short section of EMT attached to help guide the bit

Thanks!

Jesse
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Re: [RE-wrenches] Pilot Hole Template

[benn kilburn]

Jesse,Are the 2x6s the 'beams' you are referring to or are the 2x6s supported 
by the beams you want to attach to?I think i realized what you were thinking 
with the QM flashing and EMT. ...stick a ~1/2" EMT piece in the QM block and 
hold it perpendicular to the roof.  Is that right?  You would still have to 
hold the EMT straight as well as the drill.
What if you used a piece of plywood about the same size or a bit bigger than 
the flashing and attach two 2x4s perpendicular and tall enough to allow your 
drill and bit to 'guide' between them. Taper the 2x4s so the drill would have a 
'V' shape to guide thru.  Throw a block on the top to keep them from spreading 
out.  This should keep your holes perpendicular with the roof/beam as long as 
you are directly above the spot you want to hit.
That does sound like a non-typical roof.  Have fun!
Cheers,benn

DayStar Renewable Energy Inc. www.daystarsolar.ca780-906-7807 Certified 
Construction Electrician Solar Photovoltaic Systems CertifiedCertificate # 
0007SHAVE A SUNNY DAY

> From: dahlso...@gmail.com
> Date: Wed, 12 Dec 2012 05:54:25 -0600
> To: re-wrenches@lists.re-wrenches.org
> Subject: Re: [RE-wrenches] Pilot Hole Template
> 
> Benn,
> 
> If you were to look at the roof from the side, it would look like this: 2x6 
> tounge and grove (laid flat and exposed inside) foam board, 3/4 plywood, 
> shingles.  I guess I'm looking for a way to ensure my bit goes in at the 
> right angle, perpendicular to the beams inside. 
> 
> William,  Im not sure.  I was hired by a large electrical contractor to 
> oversee this project.  The job required NABCEP and they didn't have anyone 
> certified. These are all things that were not thought about before hand. My 
> hope is that the 3/4" plywood will help, blue board is very hard to crush on 
> its face, so I can only hope it holds, if not, I don't know what they will 
> do.  
> 
> Jesse
> 
> Sent from my iPhone
> 
> On Dec 12, 2012, at 12:02 AM, William Miller  wrote:
> 
> > Jesse:
> > 
> > How are you going to avoid crushing the foam when you tighten your 
> > fasteners?
> > 
> > William Miller
> > 
> > 
> > At 06:00 PM 12/11/2012, you wrote:
> >> Hello,
> >> 
> >> The roof I'm currently working on is not a typical roof.  The construction 
> >> is as follows:
> >> 
> >> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) 
> >> and on top of that 3/4" plywood with asphalt shingles on top of that.
> >> 
> >> I'd like to make a template to ensure that my pilot bit doesn't wander 
> >> when I'm going through the blue board.  If I miss the beams inside, the 
> >> hole or the lag would be exposed.
> > 
> > ___
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Re: [RE-wrenches] off-grid permitting problem

[Jason Szumlanski]

See 690.10, 690.1, and 690.3.


*Jason Szumlanski** *

*Fafco Solar*


On Wed, Dec 12, 2012 at 1:00 AM, William Miller wrote:

> Jeff:
>
> There is a code passage that specifically states that one does not need to
> provide full rated ampacity to a service.  I am sure you can find it.
>
> Find a way to prove, mathematically, that the system planned will provide
> adequate power.  Create or find a spreadsheet listing all appliances and
> wattages and system watt hours provided.  Dress it up, put your logo on it
> and sell it to the building department.
>
> William Miller
>
>
>
>
> At 07:52 PM 12/11/2012, you wrote:
>
>> Content-Type: multipart/alternative;
>> boundary="=_NextPart_000_**0006_01CDD7F2.373D3CB0"
>> Content-Language: en-us
>>
>>
>> We have a client that just had assembled on his rural property a pre-fab
>> modular home with  "normal" wiring and 200 amp main panel and meter base.
>>  However, landowners around his property will not grant access for electric
>> utility to cross and he needs to move in ASAP.  He realizes that some day
>> he should be able to resolve this utility access but until then he wants us
>> to do an off-grid "basic" solar system with generator backup so he can at
>> least power lights, well pump, and basic appliances.   His budget will not
>> allow a fully off-grid solar system so we wanted to do reduced solar and
>> battery system with larger generator to fill in on bad solar days.  He does
>> have good solar exposure and lots of cleared land, but figures one day the
>> solar and generator will become a backup system to a future grid connection
>> so does not want to spend any more than absolutely necessary.
>>
>> However ,this local inspector for this rural county has no experience
>> with solar and is expecting to see a 200 amp service connection from the
>> utility before allowing occupancy.  He did hint that a 100 amp service
>> connection may be allowed but nothing less.  I know NEC does mention that a
>> panel does not have to be supplied with the amount of service capacity it
>> is rated for, but what other code issues can I point out to get this
>> accepted without getting into a pis- contest?
>>
>> Thanks,
>>
>> Jeff Yago
>>
>
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Re: [RE-wrenches] Wind Turbine sources?

[John Blittersdorf]

Michael,
   Bergey has the 48 v XL.1 available, now called the Excel 1.  3 wire to base 
of tower so the rectifier is now accessible!  The controller is now a Midnite 
solar Classic.   Very sweet setup.  Price is higher but comes with the switch 
box (with shutdown breakers and rectifier).  I have installed one and it works 
great. 

John
CV Solar

Sent from my iPhone

On Dec 12, 2012, at 12:36 AM, "Jeremy Rodriguez- All Solar Inc." 
 wrote:

> With news that Southwest Windpower has layed off some of its staff and that 
> they are discontinuing the Whisper line I wonder who will pick up the slack, 
> if anyone!
> Perhaps Bergey will make their XL.1 in 48V. 
> What turbine brands can the wrenches recommend?  
> Sorry if this does not pertain to this list, Michael
> Jeremy
> All Solar
> CO, USA
> Sent via BlackBerry. Sorry for typos and shorthand!
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Re: [RE-wrenches] Pilot Hole Template

[Jesse Dahl]

Benn,

If you were to look at the roof from the side, it would look like this: 2x6 
tounge and grove (laid flat and exposed inside) foam board, 3/4 plywood, 
shingles.  I guess I'm looking for a way to ensure my bit goes in at the right 
angle, perpendicular to the beams inside. 

William,  Im not sure.  I was hired by a large electrical contractor to oversee 
this project.  The job required NABCEP and they didn't have anyone certified. 
These are all things that were not thought about before hand. My hope is that 
the 3/4" plywood will help, blue board is very hard to crush on its face, so I 
can only hope it holds, if not, I don't know what they will do.  

Jesse

Sent from my iPhone

On Dec 12, 2012, at 12:02 AM, William Miller  wrote:

> Jesse:
> 
> How are you going to avoid crushing the foam when you tighten your fasteners?
> 
> William Miller
> 
> 
> At 06:00 PM 12/11/2012, you wrote:
>> Hello,
>> 
>> The roof I'm currently working on is not a typical roof.  The construction 
>> is as follows:
>> 
>> 2"x6" tongue and groove exposed inside, with 4 inches of foam (blue board) 
>> and on top of that 3/4" plywood with asphalt shingles on top of that.
>> 
>> I'd like to make a template to ensure that my pilot bit doesn't wander when 
>> I'm going through the blue board.  If I miss the beams inside, the hole or 
>> the lag would be exposed.
> 
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