Re: [RE-wrenches] Fronius IG4, State 417 error

Wallace, I can't attest to that particular error code. I can attest that many or most of the original Fronius IG inverters we installed ended up failing and have since been replaced. As a general rule, we advise on installing a new model inverter when old out-of-warranty units fail since the techn

Re: [RE-wrenches] High Power Split phase inverter/chargers

The Tesla Powerwall system has worked well for us, and be configured up in the 50 kW + range. We've installed several 4-Powerwall systems totalling 20 kW / 54 kWh. In order to get to 50 kW battery inverter capacity, you'd need 10 Powerwalls. Now you can do multiple Gateways on site, so could concei

Re: [RE-wrenches] Old & new Enphase communication issues

Nick - Slightly different question related to the same topic - can we buy IQ based MIs for legacy positively grounded SunPower systems? Thanks, August Luminalt On Tue, Mar 10, 2020 at 10:23 AM Nick Soleil wrote: > As Dave mentioned, > > We manufacture M215 and M250 microinverters that are bas

Re: [RE-wrenches] Disconnect spacing

Jason - I'm not understanding what your inspector is pushing back on. The enclosure lid needs to be able to open, the handle needs to be accessible for operation, and NEC 110.26 working clearances need to be maintained. I suppose there may be manufacturer clearance requirements, but I haven't seen

Re: [RE-wrenches] Rapid Shutdown Compliance

Hi Corey - As we've grown, and as our fleet of installed systems has grown, I've become increasingly interested in choosing an inverter solution that shows per-module production data. I realize that you specifically asked not to consider optimizers or microinverters, but I wonder if that will be a

Re: [RE-wrenches] Rapid Shutdown Compliance

All - Ray has a good point, the discussion here is really about two different types of systems - mainstream ongrid PV, and small scale (and a relatively small market) offgrid PV. It's really tough to design a small offgrid system (especially DC coupled) with rapid shutdown. I think it's just a case

Re: [RE-wrenches] Enphase intermittent breaker trippjng

Hi Jason - I know I've mentioned this before, but were you able to verify that the branch trunk cable end caps are properly installed? We've had a few cases of intermittent breaker tripping where the end caps were not installed, had fallen off, or not properly installed. A little moisture leads to

Re: [RE-wrenches] MLPE Mapping

Our crews have been doing daily reports that include a Google Photos link of the work they accomplished that day. Creating the shared photos link is so easy now with both Android and iPhone that we've had widespread adoption among our crews. It really is awesome. Anyway, part of their report is to

Re: [RE-wrenches] SHW photos wanted

r pros and cons, I could go on and on. Have fun with the article! Best, August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com aug...@luminalt.com -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mai

Re: [RE-wrenches] Heat dump or Stagnate?

d possibly degrade the glycol inhibitors. Tom Lane, thoughts? Best, August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com aug...@luminalt.com -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wre

Re: [RE-wrenches] Heat dump or Stagnate?

t here: http://www.dow.com/PublishedLiterature/dh_0040/0901b80380040bd2.pdf?filepath =heattrans/pdfs/noreg/180-01315.pdf&fromPage=GetDoc I guess I better get back to work... Anyone else have experience with degrading systems? Best, August August Goers Luminalt Energy Corporation O: 415.5

Re: [RE-wrenches] lay in lugs

pic: http://www.allproducts.com/manufacture7/femico/kkep.html These lugs are widely available from most solar suppliers. Yea, those old standard aluminum lay in lugs just don't hold up in our climate, at least. Best, August August Goers Luminalt Energy Corporation 4000 Irving Street San Fran

Re: [RE-wrenches] squirrel problems & now, snow!

ing a best practices class at the Solar Power conference this year and would like to be able to address these issues with some good pics. We'll certainly give you credit for your photos. Since we primarily work in the Bay Area we don't run into either problem. Thanks in advance, Aug

Re: [RE-wrenches] Chinese solar cells and modules and pricing

about five years and learned among other things that Chinese produced product reliability can vary drastically. We would purchase say maybe 5000 units from a manufacturer with perfect results and then purchase 5000 more a year later with 50% failure rate. Just my 2 cents. -August August

[RE-wrenches] Enphase Recall?

Hi Wrenches, I was at an inspection yesterday and the inspector asked me if we were installing Enphase inverters. I told him that we have not to date - we're waiting for a couple of years of solid performance history. Anyway, he mentioned that he had heard that a batch of already installed Enphas

Re: [RE-wrenches] Enphase Recall?

Marv, Thanks for giving a definitive answer. -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com <http://www.luminalt.com/> aug...@luminalt.com _ From: re-wrenches-boun...@lists.re-wrench

Re: [RE-wrenches] Craftsman 82062 DC/AC Amp Clamp

functioning perfectly so I stick with the fluke. -August  August Goers Luminalt Energy Corporation 4000 Irving Street San Francisco, CA 94122 Office: 415.564.7652 Mobile: 415.559.1525 aug...@luminalt.com www.luminalt.com - Original Message From: Max Balchowsky To: RE-wrenches Sent

Re: [RE-wrenches] myers hubs

314.15(A). Anyone agree or disagree with me? -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com <http://www.luminalt.com/> aug...@luminalt.com _ From: re-wrenches-boun...@lists.re-wrench

Re: [RE-wrenches] myers hubs

y good in a non-metallic enclosure. -August August Goers VP, Engineering Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com <http://www.luminalt.com/> aug...@luminalt.com _ From: re-wrenches-boun...@lists.re-wr

Re: [RE-wrenches] myers hubs

pec.pdf> -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com <http://www.luminalt.com/> aug...@luminalt.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-

Re: [RE-wrenches] myers hubs

um/albums//tc_us/tc_1_rigidoverspec.pdf <http://tnblnx3.tnb.com/emAlbum/albums/tc_us/tc_1_rigidoverspec.pdf> -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com <http://www.luminalt.com/> aug...@luminalt.c

Re: [RE-wrenches] myers hubs

-wrenches.org] On Behalf Of August Goers Sent: Friday, July 24, 2009 10:15 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] myers hubs William, See: http://www.arlcatalog.com/EMT/EMT%20Rain%20Tight%20Compression%20Couplings.h tm These fittings are nice because the steel is tinted bl

Re: [RE-wrenches] myers hub

Drake and Wrenches - See pg 19 for a T&B Grounding hub: http://tnblnx3.tnb.com/emAlbum/albums/tc_us/tc_1_rigidoverspec.pdf I'm not 100% certain on whether the standard hub on the page above qaulifies to be a suffient bonding solution in a non-concentric knockout. Their comment #3 "Sharper an

Re: [RE-wrenches] Fall protection anchors for comp shingle roofs

Hi Andrew, Good topic! We typically use a ridge anchor like this: http://www.guardianfall.com/product.php?id=16 On existing comp roofs one option is to gently peel the top shingle off and then fasten the anchor down. After work is complete you can remove the anchor (often times with gre

Re: [RE-wrenches] Fall protection anchors for comp shingle roofs

Andrew - This might be what you're looking for since it's designed to be permanently mounted: http://www.guardianfall.com/product.php?id=61 -August _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf

[RE-wrenches] Surge protector update?

Wrenches -   Anyone have experience with lighning hitting an array with a surge protector installed? What happened?   I'm Here's an ad, point number 5 mentions that the surge protectors installed in the array combiner box "protects solar modules and blocking diodes..."   http://www.citel.us/dc_s

[RE-wrenches] Dealing with snow

Hi Wrenches, I'm working on a PV installation best practices training agenda and I'm trying to gather some info on dealing with snow. I don't have experience with snow because I've always worked in the California coastal area. Here are some questions which I'm hoping some of you might be ab

Re: [RE-wrenches] DC positive and negative in same conduit, other inspection issues

Dave, Do you have any photos? -August From: re-wrenches-boun...@lists.re-wrenches.org [re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click [davecl...@fsec.ucf.edu] Sent: Wednesday, August 19, 2009 2:41 PM To: RE-wrenches Subject: [RE-wrenc

[RE-wrenches] Rooftop wiring methods between multiple subarrays

nd EMT which is robust but time consuming. I've also used strut with a cap strip on the top which effectively makes a wire raceway but it is difficult to properly ground both ends of the raceway and is also time consuming. Looking forward to hearing your ideas. Best, August August Go

[RE-wrenches] Bare copper in EMT?

ght: http://www.engineersedge.com/galvanic_capatability.htm However, I inspect PV installations on a regular basis and commonly see bare copper in EMT with no significant signs of corrosion. Maybe they're not old enough? Thanks, August August Goers Luminalt Energy Corporation O:

Re: [RE-wrenches] Rooftop wiring methods between multiple subarrays

ctions (complies with NEC 250.92(B)(2)). As William point out, EMT is robust and reliable. I still think that there must be more efficient way to go between arrays. Maybe that's why commercial low profile racking systems are often fully integrated systems with built in wire raceways. -A

Re: [RE-wrenches] Rooftop wiring methods between multiple subarrays

d idea from a galvanic perspective but through experience I haven't found any problems with it. Does any one have any reference to code material specifically allowing or not allowing this? -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.

Re: [RE-wrenches] Rooftop wiring methods between multiple subarrays

Hi Ray - What coastal region or regions are you familiar with? I'm really only familiar with the San Francisco Bay Area but thoroughly painted EMT seems to hold up through the long haul even just a few blocks from the ocean. If it isn't painted the straps and fittings start rusting in less than

Re: [RE-wrenches] Rooftop wiring methods between multiple subarrays

William - I agree with you about a no-shortcuts and full workmanship plan of attack. That is how we will all stay in business and continue to make local scale PV a success. However, when we dissect the details of running between multiple array sections I still don't see a good solution. I'm gla

Re: [RE-wrenches] Wire Management--was RE: Rooftop wiring

Wiley would probably have some good insight on this issue. Things are changing – we’ll fix this issue sooner or later. -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun

Re: [RE-wrenches] Canadian Solar modules

Dan - Thanks for sharing this information - I found it an interesting read. It's always good to review the different factors which may effect module output and longevity. Only time will really tell. In quick review, it sounds to me like encapsulation materials and methods, soldering quality, ce

Re: [RE-wrenches] Stainless steel, self-tapping grounding screws

the Solar Power conference! Best, August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com<http://www.luminalt.com/> From: re-wrenches-boun...@lists.re-wrenches.org [re-wrenches-boun...@lists.re-

Re: [RE-wrenches] Splice Caps

Chris - We use these Panduit C-taps: http://pdf.directindustry.com/pdf/panduit/panduit-catalog/12722-23882-_455.html They work great and the compression tool is relatively inexpensive but there is question about whether they're listed for use with solid wire. -August August Goers Lum

Re: [RE-wrenches] Splice Caps

it's a 14 MB file. Kent Osterberg Blue Mountain Solar August Goers wrote: Chris - We use these Panduit C-taps: http://pdf.directindustry.com/pdf/panduit/panduit-catalog/12722-23882-_455.html They work great and the compression tool is relatively inexpensive but there is question about wh

Re: [RE-wrenches] NABCEP

personally certified I would have less clout when making management decisions with a NABCEP certified installer. At the very least I've been contacted many times by people who found my name on the NABCEP website oftentimes resulting in new positive relationships. -August August Goers Lumi

[RE-wrenches] Labels Revisited

ations for sources and or materials which meet these requirements? We typically use placards but they won't work well when trying to wrap the conduit as required. Any labeling sources and or thoughts would be great. Thanks in advance, August August Goers Luminalt Energy Corporation O:

Re: [RE-wrenches] fancy stud sensors (was RE: Clean Energy Brands)

lly disappointed that the scanner was such a worthless device. -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Beh

[RE-wrenches] anti islanding?

Hi Wrenches, Does anyone know where I can go to read about general information on how grid tied inver anti islanding works? I'd like to be able to describe this in better detail to our tech-savvy clients. Thanks, August August Goers Luminalt Energy Corporation O: 415.564.7

Re: [RE-wrenches] anti islanding?

Bil, boB, Darryl, Thanks for all the input... now I have some good Valentine's Day reading ;-0 -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com From: re-wrenches-boun...@lis

[RE-wrenches] Module Warranty

tput warranties. Any thoughts welcome! Thanks, August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 aug...@luminalt.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches

Re: [RE-wrenches] NABCEP website ideas

CEP certified PV and Thermal installer. -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com<http://www.luminalt.com/> From: re-wrenches-boun...@lists.re-wrenches.org [re-wrenches-boun...@lists.re-

Re: [RE-wrenches] Module Warranty

Joel - Yea, that's about what I figured... Thanks for your input. -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 [mailto:re-wrenches-boun...@lists.re-wrenches.org] On B

Re: [RE-wrenches] SolarEdge

Holt, I haven't used these yet but I've been following DC MPPT products for a while just to see where things are going. They appear to offer similar benefits as the microinverter products such as reduced shading and orientation concerns and individual module level remote monitoring. Here are a

Re: [RE-wrenches] Supply Side Tap Overcurrent Protection

service wires. This is a requirement in San Francisco and come to think of it I haven't looked deep enough into the code to see if it is an actual NEC requirement or not. Thoughts? -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminal

Re: [RE-wrenches] Supply Side Tap Overcurrent Protection

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

Re: [RE-wrenches] DC wire sizing

Hi All - It seems to me that there is indeed a rather simple set of calculations that we can run to determine costs and benefits of wire sizing. Solar Pro 3.2 (Feb/Mar 2010) has a good article on this on page 16. http://solarprofessional.com/issue/?backissues=1 -August August Goers

Re: [RE-wrenches] 600VDC Safety Switch question

Allan - What is the application? Are you trying to switch a large PV array before the inverter but after the strings have been fused and combined? -August August Goers Luminalt Energy Corporation O: 415.564.7652 M: 415.559.1525 F: 650.244.9167 www.luminalt.com<http://www.luminalt.

Re: [RE-wrenches] bare tinned solid copper

Phil, The inspector wants to see #2 tinned copper for equipment ground in exposed areas? Or is he referring to the grounding electrode conductor? This kind of stuff gets mixed up all the time in my neck of the woods... -August August Goers Luminalt Energy Corporation O: 415.564.7652 M

Re: [RE-wrenches] GT 3.0 FAILURES

n is certainly not robust enough - maybe Xantrex has fixed it by now? Best, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 m: 415.559.1525 o: 415.641.4000 aug...@luminalt.com *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto

Re: [RE-wrenches] solar hot water penetration flashing

We're using coolie caps for our installations at this point and of course they are a very robust solution. We typically make them in house. That said, Chemlink makes a product called DuraSil which is supposidly good up to 400F and compatible with copper: http://www.chemlinkinc.com/docs/datash

[RE-wrenches] SHW Mixing Valves Vs. Anti-Scald

clear from the info above that we need to use valves that meet the ASSE 1017 standard but maybe I'm over thinking it? Best, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 m: 415.559.1525 o: 415.641.4000 aug...@luminal

[RE-wrenches] SHW Mixing Valves Vs. Anti-Scald

above that we need to use valves that meet the ASSE 1017 standard but maybe I'm over thinking it? Best, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 m: 415.559.1525 o: 415.641.4000 aug...@luminal

[RE-wrenches] Production and Consumption monitoring?

. Thanks, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 m: 415.559.1525 o: 415.641.4000 aug...@luminalt.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re

Re: [RE-wrenches] Best practices for mounting on cedar shake roof?

We've used the big 18" x 18" Quickmounts with good results. http://www.quickmountpv.com/products/shake-mount.html -August *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Aladdin Solar *Sent:* Wednesday, July 14, 2010 10:0

Re: [RE-wrenches] Battery Boxes?

on battery boxes? We've been using L16 AGM batteries but we might be going to a different size and shape. Any recommendations on favorite batteries is also appreciated. I hope you're all enjoying solar high season! Best, August August Goers Luminalt Energy Corporation 1320

Re: [RE-wrenches] Battery Boxes?

ke the > inevitable ' stuff ' that gets piled on top of boxes in garages,etc. If you > need acid resistance, coat the inside with an epoxy paint, like garage floor > paint. But for GTWB, it's mostly AGM's. > > Ken Schaal > CommonWealth Solar > > - Origina

Re: [RE-wrenches] Battery Boxes?

WB, it's mostly AGM's. > > Ken Schaal > CommonWealth Solar > > - Original Message - > *From:* August Goers > *To:* RE-wrenches > *Sent:* Wednesday, July 14, 2010 2:37 PM > *Subject:* Re: [RE-wrenches] Battery Boxes? > >Hi Wrenches - > >

Re: [RE-wrenches] Battery Boxes?

al Message - *From:* August Goers *To:* RE-wrenches *Sent:* Friday, July 16, 2010 8:16 AM *Subject:* Re: [RE-wrenches] Battery Boxes? Joel - I think this is the tool box you mentioned: http://www.toolboxes4less.com/titan-packer-storage-chest-31.html Looks almost ideal. I'll let

[RE-wrenches] Onyx walkable PV floor

lcome. I am skeptical to say the least. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email ad

[RE-wrenches] Battery backup under attack in CA

of sending battery power to the grid. Thoughts? -August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address

[RE-wrenches] 1000 V meters?

looking at the Fluke 376 which also measures AC and DC current but it is a bit expensive. The Fluke T5 is much cheaper, measures 1000 VDC, but doesn't measure DC current. Anyone have a meter that they like that can handle 1000 V? Best, August *August Goers* Luminalt Energy Corpor

Re: [RE-wrenches] 1000 V meters?

is very inexpensive and works great. We also use a Seaward Solar PV150 solar test kit for testing strings. On Thu, Aug 22, 2013 at 4:03 PM, August Goers wrote: Hi Wrenches, It's new tool time! We're starting engineering for our first 1000 V small and medium commercial systems. Th

Re: [RE-wrenches] double-insulated PV wire

Marco, You might try http://pv-cables.com/ my contact there is Bryan. They sell all kinds of PV wire, connectors, etc for good prices. Do you have 1000 V TL inverters or just 600 V? If you are using 1000 V the whole wiring game changes quite a bit. Best, August Luminalt *From:* re

Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation

ecific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August *August Goers* Luminalt Energy Corpor

Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation

if multiple 7" Unirac 2-piece Stand-Offs cylinders threaded together with all-thread would be a structurally sound solution. I'll pass that option by the engineers... Still hoping for an off-the-shelf solution... J ason On Tue, Sep 10, 2013 at 4:38 PM, August Goers wrote:

Re: [RE-wrenches] copper roof

e the issue here. Looks like a nice building! Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Nik Ponzio, Building Energy

Re: [RE-wrenches] GEC sizing for a high amp, low voltage PV system with microinverters

Hi Charlie, I can't help but be intrigued by your setup here. It seems like the complete opposite of where our commercial systems are going with transformerless 1000 V inverters entering the market. Anyway, I'm sure it's an interesting project and there may very well be advantages to the system

Re: [RE-wrenches] transformerless inverters and conductor colors

beast and the only viable option I've found to date is to run 1000 V PV wire all the way from the array to the inverters. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* re-wrenches-boun...@lists.re-wrenches.org [mailt

Re: [RE-wrenches] transformerless inverters and conductor colors

Marco, My understanding is that PV wire is a separate listing. Exposed DC wiring with ungrounded non-isolated systems must be PV wire. USE-2 wire is not necessarily PV wire unless listed and labeled as PV wire. Here's a decent article: http://www.renewableenergyworld.com/rea/news/article/2010

Re: [RE-wrenches] transformerless inverters and conductor colors

E-wrenches] transformerless inverters and conductor colors Thanks. Does this wire have “PV Wire” written on the insulation jacket? *From:* re-wrenches-boun...@lists.re-wrenches.org [ mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *August Goers *Sent:* Friday, September 27, 2013 7

Re: [RE-wrenches] transformerless inverters and conductor colors

Even though they say "Photovoltaic" in the spec sheet, I am not sure that this is "PV Wire". I don't see anywhere that it actually uses those exact words, and that is the designation in the NEC. Blessings, Kelly On Sep 27, 2013, at 10:38 AM, August Goers

Re: [RE-wrenches] Energy usage for an electric car

Here's a good place to go to find mileage: http://www.fueleconomy.gov/feg/Find.do?action=sbs&id=32557 38 kW-hrs/100 mi for the Tesla Model S. Todd, isn't your estimate below off by a decimal? Best, August *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun.

Re: [RE-wrenches] Using legacy modules on micro-inverters

All - If you haven't already seen it, you might want to try playing with the numbers on Enphase's online calculator: http://enphase.com/module-compatibility-calculator-m250-update/ -August *August Goers* Principal Luminalt Energy Corporation o: 415.641.4000 m: 41

Re: [RE-wrenches] SatCon Inverter Maintenance Manuals

Jason, There is a small ex-Satcon employee group supporting their inverters for a fee. If you're interested contact me off list and I'll get you a contact or two. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* r

Re: [RE-wrenches] transformerless inverters and conductor colors

All - Just a quick follow up to this thread. My understanding is that you can use black USE-2 or PV Wire under the 2008 and 2011 NEC for all grounded and ungrounded conductors. 2008 NEC has section 200.6(A)(2) Grounded Conductors which reads (it is section 200.6(A)(6) in 2001 NEC): "A sing

[RE-wrenches] Solar City Aquires Zep

Wrenches, Have you folks seen this: http://www.greentechmedia.com/articles/read/SolarCity-Acquires-Zep-Solar-For-158-Million Lots of interesting ramifications for us smaller guys as the bigger companies move closer and closer to vertical integration. -August

Re: [RE-wrenches] Point of connection question

William, You have 9 M190s each running at 800 mA according to spec sheet. That equals 7.2 A nominal output current. Plus you have 10 M250s (if you look at your drawing) each running at 1 A = 10 A. 7.2 A + 10 A = 17.2 A * 1.25 = 21.5 A min breaker size. So, you'll need to round your breaker to a

Re: [RE-wrenches] Enphase and Line Noise

ystem yet where it didn't work. Our pricing has this cost worked into it. Best, August *August Goers* Principal Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com On Wed, Oct 16, 2013 at 1:01 PM, wrote: > Guys, > > I am thinking of getting back into

Re: [RE-wrenches] Fronius Installer Support Sucks- but who else?

Don - Unfortunately I believe the Sunny Tripower is only good for 480 V applications. I'm not aware of other 240 V 3-phase inverters on the market (other than the Fronius). We run into a lot of 208 V 3-phase here in the Bay Area and unfortunately can't use these cool new 3-phase inverters from S

Re: [RE-wrenches] smaller 3-phase commercial inverters

Chris, Good point, we've installed a few of these P1 10k units and have been relatively happy. My understanding is that the first batch being sold in the US was very problematic but I think they're ironing out the kinks now. We have had a couple of failures but P1 tech support swapped them with

Re: [RE-wrenches] smaller 3-phase commercial inverters

Hi Bill - Thanks, this is helpful info. Do you know how to calculate or approximate how we would keep the unbalanced voltage to less than 3%? I guess I need to check out ANSI/C84.1-2011 but I thought maybe there are some ballpark rules of thumb. Thanks, August *August Goers

Re: [RE-wrenches] smaller 3-phase commercial inverters

they might be worth checking out. -August *August Goers* Principal Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com On Fri, Oct 18, 2013 at 9:45 AM, August Goers wrote: > Hi Bill - > > > > Thanks, this is helpful info. Do you know how to calc

Re: [RE-wrenches] RE-wrenches Digest, Vol 6, Issue 423

the box. Luckily it didn’t spread to the roof – it was still arcing away when I busted open the rusted lid. That seems like a workmanship the materials selection issue to me. Best, August August Goers Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com *From

Re: [RE-wrenches] PV Wiring methods

Hi All – I’m not sure whether Hellermann Tyton is related to Heyco, but I know of the SunBundler product through Heyco: http://www.heyco.com/Alternative_Energy_Products/pdf/1-15-new.pdf -August *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenc

Re: [RE-wrenches] PV Wiring methods

conduit so the question had never occurred to me. Obviously, you have to bond both ends of the conduit if it is over 250 v. I know that AC would have induction issues with running individual conductors but I’m not sure with DC. Thanks, August August Goers Principal Luminalt Energy

Re: [RE-wrenches] PV Wiring methods

ing a return leg which would have no pair back to the combiner/junction box? jay peltz power On Nov 19, 2013, at 9:38 AM, August Goers wrote: Hi All – On a related note, I’ve become good friends with some of the inspectors in San Francisco and they called me yesterday with a questio

Re: [RE-wrenches] A related question - Individual AC conductors through separate conduits

4) [which don't help here]. On 2013/11/19, 12:38, August Goers wrote: Hi All – On a related note, I’ve become good friends with some of the inspectors in San Francisco and they called me yesterday with a question. Is it okay to run *individual* DC conductors through EMT for wire managemen

[RE-wrenches] Any experience with Power-One AFCI inverters

All - As many of your are aware, the 2011 NEC is coming to California in the new year and so we'll start installing AFCI inverters on our projects. Has anyone had experience with the AFCI string inverters from Power-One? I've heard through the grapevine that some people have had problems with Powe

Re: [RE-wrenches] Mike Holt Solar Video - LIVE in your town, limited time only

Hi Glenn, This is a confusing passage without seeing the context from the other parts of 690.47 (A, B, C etc). Can you send the full passage if it’s handy for you? My 2014 NEC is in the mail so I have yet to see the full implications of this section. Best, August *From:* re-wrenches-bou

Re: [RE-wrenches] Return on investment information

Hi Chris, Another free option might be RETscreen: http://www.retscreen.net/ang/version4.php OnGrid and Clean Power Finance Tools are two popular paid options, both offer free trials I believe. -August *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@list

Re: [RE-wrenches] Power One Micro inverters

Hi Roland, We’ve installed around ten Power-One micro systems with mostly good results. All in all, I’d say the installation is very similar to an Enphase M215 based system if you are familiar with those. As William mentioned on a separate post, the cabling is a bit expensive but otherwise simil

[RE-wrenches] Deka AGMs

All Battery Wrenches, I’m servicing an existing battery backup system with some big Deka AGM battery banks. I believe they are about 12 years old. Does anyone have any general comments about Deka batteries? Any suggestions about how I would test these would be greatly appreciated. Here’s a link

Re: [RE-wrenches] Concrete tight versus raintight

Hi William, About 5 years ago this became a big issue up in San Francisco and we had to learn the hard way. We used to just go buy outdoor EMT fittings and we were okay, then the inspectors started requiring fittings that say raintight or wet location (often stamped “wetloc”) on them. I don’t kn

Re: [RE-wrenches] Concrete tight versus raintight

e-wrenches-boun...@lists.re-wrenches.org [ mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *August Goers *Sent:* Thursday, January 16, 2014 8:00 AM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Concrete tight versus raintight Hi William, About 5 years ago this became a big i

Re: [RE-wrenches] Tray cable with PV-Wire on roof

point of no return from sun exposure although the color definitely fades. We also bonded both ends of the tray per NEC 250.97 which added a little complexity to the installation. NEC article 392 Cable Trays is worth reading if you haven't already. -August August Goers Principal Lumin

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