Re: [RE-wrenches] Does a Neutral Count as a CCC

inverters are likely to have current on the neutral. Peter, since it sounds like you have battery backup in your example it sounds like you will need to count the neutrals between your inverter(s) and critical loads as current carrying. Best, August *From:* August Goers [mailto:aug

[RE-wrenches] 2014 NEC 705.22 disconnect for inverter capable of being locked

Hi Wrenches, We have a particular plan checker who wants us to provide a *lockable* AC disconnect for our inverter output circuit. His particular issue is that he wants the locking mechanism to be installed and on site. Here is a little NEC background info: 2014 NEC 705.22 Disconnect Device

Re: [RE-wrenches] 2014 NEC 705.22 disconnect for inverter capable of being locked

pr 28, 2016, at 5:58 PM, jay wrote: HI August, I guess my question is. Are they asking for a lockout AC disconnect on a AC circuit IE from the AC panel? or are they asking for a lockout from the inverter AC at the inverter? thanks jay peltz power On Apr 28, 2016, at 3:11 PM, August

Re: [RE-wrenches] Goofy roofing

Hi Bill, It sounds like you’re talking about a purlin type setup – 4’ sounds a little far apart but I guess that’s what you have to deal with. If you have a corrugated metal roof, we’ve used S-5 CurruBrackets screwed through the metal and into the purlins and then either run the solar rail up an

Re: [RE-wrenches] Goofy roofing

ket. The name of it escapes me at the moment. Maybe FixT? We are attaching to purlins which are 2"x6". I wouldn't think 1"x anything would provide enough pull-out? Benn Kilburn SkyFire Energy Inc. 780-906-7807 On Apr 29, 2016, at 9:09 AM, August Goers wrote: Hi Bill,

Re: [RE-wrenches] Goofy roofing

feedback/good ideas. Bill Feather River Solar Electric On 4/29/2016 3:28 PM, August Goers wrote: Benn, We’ve done it several ways including putting four 14 x 1.5” TYPE 17 screws per attachment point through the metal and into the 1” x wood purlin. The key is that the load path all the

Re: [RE-wrenches] supply side connection - Tap connector recommendations

I don’t know about other parts of the country. If we have a self contained revenue meter – ie the type that cuts off power to the building when it is pulled, then we just pull it for any type of supply side connection or service upgrade. Sometimes we have to cut the utility locking mechanism (we

[RE-wrenches] meter main combo with multiple main breaker spots and NEC 705.12

Hi Wrenches, We have a 125 A meter/main combo with space for up to 6 breakers (or three two-pole breakers). Here is a Google photos link: https://goo.gl/photos/kftDerEESg3giLrB9 The configuration is such that the busing is unprotected and connected directly to the utility feeds through the

Re: [RE-wrenches] meter main combo with multiple main breaker spots and NEC 705.12

panel since the connection would qualify as a supply side connection. However, I’m still curious about main breaker limitations for these types of panels. Best, August *From:* August Goers [mailto:aug...@luminalt.com] *Sent:* Wednesday, May 25, 2016 2:39 PM *To:* 'RE-wrenches' *Subje

Re: [RE-wrenches] Generator factory wiring issues

All – Just to cheer you up, this reminds me of client of ours who had 12/3 NM Romex run between the utility service-drop conductors and weatherhead: https://goo.gl/photos/m5kDypbXmyPSftnU7 This was a 200 A service and the client had been running his entire house this way for years! I wo

Re: [RE-wrenches] closets and working space

Hi Adam, Check out “NEC 240.24(D) Not in Vicinity of Easily Ignitible Material. Overcurrent devices shall not be located in the vicinity of easily ignitable material, such as in clothes closets.” -August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On B

Re: [RE-wrenches] Metal Battery Box

Hi Dave, We’re used Midnite’s battery enclosures with good success: http://www.midnitesolar.com/products.php?productCat_ID=12&productCat_ID=12&productCatName=Battery See the MNBE-CL16 Best, August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On

Re: [RE-wrenches] getting PV modules up to the roof

0.318.7646 On Thu, Feb 7, 2013 at 10:44 AM, August Goers wrote: Hi Wrenches, I imagine that all of us working in rooftop PV have put some good hard thought on the best way to get the modules up to the roof. There are various lifts on the market, you can hoist them with ropes manually, or walk t

Re: [RE-wrenches] Canadian Solar / MC4 connectors in a marine environment

Kirk, It sounds like you might have a bonafide ground fault somewhere, possibly at a location other than the module lead connections. I’ve seen current leakage cause all kinds of strange corrosion problems. Maybe there is a pinched or cracked module lead or homerun? It might even be possible tha

Re: [RE-wrenches] New Pge TOU rates

Hi Jason, The mandatory switch to a TOU rate along with NEM 2.0 forces all of us working with grid tied systems in CA to thoroughly rethink our game plan! We have been using Energy Toolbase (as Mac mentioned) to model proposals to accurately estimate post-solar bills under one of these new rates

Re: [RE-wrenches] New Pge TOU rates

? Please enlighten me. Bill Feather River Solar Electric Bill Battagin, Owner 4291 Nelson St. Taylorsville, CA 95983 530.284.7849 CA Lic 874049 www.frenergy.net On 6/27/2016 6:57 AM, August Goers wrote: Hi Jason, The mandatory switch to a TOU rate along with NEM 2.0 forces all of u

Re: [RE-wrenches] Conext XW+ always feeding critical loads subpanel from battery bank

Dan, I went through what sounds like a similar situation with a XW+ recently. Ours had the Schneider charge controllers, not Outback, so I’m not sure how the two would interface in your situation. You should be able to update firmware through the SCP, call Schneider support for help. You basi

Re: [RE-wrenches] Conext XW+ always feeding critical loads subpanel from battery bank

:* August Goers [mailto:aug...@luminalt.com] *Sent:* Tuesday, July 19, 2016 6:43 AM *To:* RE-wrenches *Subject:* RE: [RE-wrenches] Conext XW+ always feeding critical loads subpanel from battery bank Dan, I went through what sounds like a similar situation with a XW+ recently. Ours had the

Re: [RE-wrenches] California AB2188 and Streamlined Permit App

Hi Bruce, We haven't run into multiple jurisdictions in the Bay using the same application forms, although there is a slow convergence of similarities in what jurisdictions are requiring. More and more jurisdictions are allowing us to email in plans, however. I believe Grid Alternatives is a CALS

Re: [RE-wrenches] Replacing grounded inverters

This topic came up on the list previously. Since isolated transformer based inverters are going the way of the dodo, the only reasonable inverter upgrade choice is to replace old inverters with new transformerless models. As was previously pointed out here, these modern inverters have much more rob

Re: [RE-wrenches] PG&E requirements

Jay, Current NEM 1.0 customers are not required to go TOU. NEM 2.0 will require mandatory TOU. E-6 is closed for new applicants - if your client is already on E-6, I highly suggest that they stay on it as it is an excellent solar rate unless they have low afternoon production or very high afterno

Re: [RE-wrenches] Replacing grounded inverters

Glen, It’s interesting you mention that you’re having AFCI issues with new TL inverters and old modules. We are too. We have a particular system with BP modules where we’re trying to figure out if we have a warranty claim situation. We’ve cleaned up all the DC-side wiring and still the Sunny Boy

Re: [RE-wrenches] Replacing grounded inverters

*jay *Sent:* Friday, July 22, 2016 7:32 AM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Replacing grounded inverters Oh boy. Which BP models. I mean those things have had lots of trouble. jay peltz power On Jul 22, 2016, at 8:23 AM, August Goers wrote: Glen, It’s interesting you

Re: [RE-wrenches] New Construction Enphase Romex / NM

Hi Jason, We’re in a territory where we can’t run Romex (NM) directly into Soladecks because of the wet location issue. I actually think inspectors are easing up on enforcing this particular code grey area, but nonetheless we haven’t run NM directly into Soladecks. I imagine that using a regular

Re: [RE-wrenches] Roof attachment

Here are a couple of products that come to mind: http://www.ecofastensolar.com/store/pc/viewPrd.asp?idproduct=4&idcategory= 2#.V5jb0TsrJaQ http://www.anchorp.com/ (I believe IronRidge resells these as well) -August -Original Message- From: RE-wrenches [mailto:re-wrenches-boun...@lists.r

Re: [RE-wrenches] Off grid

Bill, I don't know about Samlex. We have a small offgrid system with an Outback GFX1424 1.4 kW inverter and FM80-150VDC charge controller. There were some issues early on with incompatible LED dimmer switches that apparently fried the Outback inverter board, so that was replaced under warranty.

Re: [RE-wrenches] Protecting Asphalt Shingled Roofs

Hi James, Great topic! Minimizing roof wear and tear during installation is a big deal. We have Yellow Spaghetti mat ( http://www.bestmaterials.com/PDF_Files/yellow-spaghetti-datasheet.pdf) and carpet scraps. Each has pros and cons. Spaghetti mat is durable and we use it over and over. It does g

Re: [RE-wrenches] Pass through/transition box for Enphase

Hopefully manufacturers will steer away from supplying fine stranded wires with their trunk cables – it’s been a joke trying to fine the proper listed reasonably priced parts to make these connections. I bet that a huge percentage of the installs out there are not meeting the listing for fine stran

Re: [RE-wrenches] Which commercial string inverters?

Hi Stephen, My most recent experience has been with SMA Tripower and Fronius Symo inverters. Previously, we installed dozens of Power-One (ABB) PVI 10.0 and 12.0 inverters in the < 2015 time period. Although I’ve heard lots of bad stories about those inverters, ours have been quite reliable over

Re: [RE-wrenches] Cat 5 cable in 240 AC power conduit with #2 alum entrance wire.

John, I’m assuming that you’ve got a mix of household voltages (120 or 240 volts) and low voltage cat-5 cable. You can’t do that, here is the code: *NEC 300.3(C)(1) Conductors of Different Systems. 1000 Volts, Nominal, or Less.* Conductors of ac and dc circuits, rated 1000 volts, nominal, or

Re: [RE-wrenches] Ballasted Roof Racking?

whole lot of benefit to ballast that I can think of. Is anyone on this list successfully installing small ballast systems? Best, August August Goers Luminalt Energy Corporation m: 415.559.1525 o:415.641.4000 aug...@luminalt.com *From:* RE-wrenches [mailto:re-wrenches-boun

Re: [RE-wrenches] Metal roof multi-fastener attachment

Hi Daryl, You might check out S-5 VersaBrackets and RibBrackets: http://www.s-5.com/clamps/index_71.cfm http://www.s-5.com/clamps/ribbracket/index_5336.cfm -August -Original Message- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of penobscotso...@midmain

[RE-wrenches] Getting ready for 2014 NEC rapid shut down with string inverters

? Best, August August Goers Luminalt Energy Corporation m: 415.559.1525 o:415.641.4000 aug...@luminalt.com ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings:

Re: [RE-wrenches] Getting ready for 2014 NEC rapid shut down with string inverters

trings is leading to false arc fault trips. > > Matt > > > On Mon, August 29, 2016 3:42 pm, August Goers wrote: >> Hi Wrenches, >> >> >> >> >> I’m preparing for 2014 NEC 690.12 Rapid Shutdown to hit in California >> January 2017. Spec

Re: [RE-wrenches] SMA Tripower

I checked the math and it indeed seems like a rounding issue – 20,000 W / 480 V / √3 = 24.05626122 A I wonder if the SMA tech support agent that Brian spoke with was just reading the manual when they said it was 24.1 A. Regardless, it seems like we would need to rely on the manufacturer to clari

Re: [RE-wrenches] Wire nuts

Are those wire nuts listed for wet locations? Most ideal outdoor (damp/wet) rated wire nuts are blue or grey in my experience. August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Benn Kilburn *Sent:* Tuesday, September 06, 2016 12:02 PM *To:*

Re: [RE-wrenches] Wire nuts

ction/transition boxes. ​Jason Szumlanski​ On Tue, Sep 6, 2016 at 3:19 PM, August Goers wrote: Are those wire nuts listed for wet locations? Most ideal outdoor (damp/wet) rated wire nuts are blue or grey in my experience. August Luminalt *From:* RE-wrenches [mailto:re-wrenches

Re: [RE-wrenches] Wire nuts

, August Goers wrote: We’re using ideal/Buchanan splice cap crimp connectors as I’ve posted here a couple of times: http://www.idealind.com/ideal-electrical/us/en/products/wire-termination/60-crimp-connectors/copper-splice-cap-crimp-connectors.aspx We really like these in nearly every way. I just

Re: [RE-wrenches] Troubleshooting Stumper - Homerun Interference in Conduit/Inverter Turning Off/On Rapidly

Definitely check polarity on each string. Could be positives and negatives are mixed up and the wire colors are adding to the confusion. August *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Roy Rakobitsch *Sent:* Wednesday, September 07, 2016 3:35 PM

Re: [RE-wrenches] Troubleshooting Stumper - Homerun Interference in Conduit/Inverter Turning Off/On Rapidly

Certainly seems like a stumper so far! I'd still check voltage and polarity with the strings through the conduit but not landed in the inverter. We've seen all kinds of mistakes where the negatives were mixed-up between strings, etc, causing strange behavior. Voltages can test fine when landed in i

Re: [RE-wrenches] Splices in service panel

Ray, I’m intrigued by this. We’ve always gone off NEC 300.3(B): (B) Conductors of the Same Circuit. All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors and bonding conductors shall be contained within the same raceway, auxiliary

Re: [RE-wrenches] micro-inverters

Here’s a pic of an M210: [image: burned enphase m210.jpg] I guess a picture is worth a thousand words. August *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *frank -bz products *Sent:* Wednesday, September 14, 2016 12:25 PM *To:* RE-wrenches *Subj

Re: [RE-wrenches] #6 PV Wire Transition

My gut is that MC4 can’t handle the kind of current that you need for #6 wire. Why such large PV wire? August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Corey Shalanski *Sent:* Thursday, October 06, 2016 3:23 PM *To:* RE-wrenches@lists.re-w

Re: [RE-wrenches] Conduit in a slab

We run PVC underground but typically transition to RMC starting at the 90 bend underground, up out of the ground, and to a box or conduit body where we then transition to EMT. August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *AE Solar *Sent

Re: [RE-wrenches] SMA Arc-Fault

Dave, It is particularly interesting that you have two inverters with intermittent arc faults. I’ve been following this thread, and agree that looking for noise on the AC side makes sense. Definitely update firmware too! That said, I thought I’d share a recent arc-fault story to this list. We

Re: [RE-wrenches] Milwaukee M18 one key tools

I was at Home Depot a week or so ago and a sales rep was pointing me to DeWalts new 60v system! http://www.dewalt.com/products/power-tools/shop-by-cordless-platform/60v-120v Luckily, it is backwards compatible with the 20v stuff. Our crews are still using the DeWalt 18v system but sooner or l

Re: [RE-wrenches] Retaining Clips

Hi Adam – Can you elaborate a bit on what you are trying to accomplish and perhaps give a description of the single line setup? August Luminalt *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *AE Solar *Sent:* Tuesday, November 29, 2016 7:15 PM *To:* R

Re: [RE-wrenches] Retaining Clips

Hi Adam, Most load center panels list backfed breaker requirements on the inside of the cover or inside the can. Some panels do no require breaker hold down kits at all, even when backfeeding as a main breaker. As you mention below, utility-interactive inverter breakers don’t need to be fast

[RE-wrenches] Equipment for rapid shutdown NEC 690.12

Hi Wrenches, We are adopting the 2014 NEC in just a few weeks and will be installing NEC 690.12 rapid shutdown compliant systems for all permits pulled on or after Jan 1 2017. I thought I’d take a quick poll to see what equipment you are all planning on using to comply with rapid shutdown for yo

Re: [RE-wrenches] 690.47(D)

Hi Mark, The current issue of IAEI magazine has an article writing by Bill Brooks called "Hot Topics for PV System Installations." In the article, he directly addresses 2014 NEC 690.47(D). Unfortunately I don't see this article posted online, but you might want to check it out if you can find it.

Re: [RE-wrenches] Deck Flashing

I don’t know if this will meet your goals, but we’ve been using Sunmodo’s deck mount with good results: *K10068-020 EZ Roof Mount Kit w/ L-Foot, Clear, Decking* http://sunmodo.com/product/ez-roof-mount-kit-w-l-foot/ -August *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrench

Re: [RE-wrenches] 1000vdc rated multi meter/clamp on

We have a couple of Fluke 381 meters. I recommend them although battery life has been a problem. Now we always keep spare batteries in the case. I like having the iFlex option for measuring amperage where the standard clamp jaws can't reach. The removable display is nice but not a must have for me

Re: [RE-wrenches] Discharging a high voltage battery

Larry – My immediate thought is that you would need a listed grid tied inverter designed for the purpose of connecting to this type of battery and inverting to the grid. A regular PV inverter won’t cut it since it is designed to MPT PV modules. The SolarEdge StorEdge product sounds like the c

Re: [RE-wrenches] Discharging a high voltage battery

, at 1:04 PM, August Goers wrote: Larry – My immediate thought is that you would need a listed grid tied inverter designed for the purpose of connecting to this type of battery and inverting to the grid. A regular PV inverter won’t cut it since it is designed to MPT PV modules. The SolarEdge

Re: [RE-wrenches] Conduit Bushings

fitting. August August Goers Principal Luminalt m: 415.559.1525 o: 415.640.4000 aug...@luminalt.com *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Kirk Herander *Sent:* Tuesday, March 07, 2017 10:58 AM *To:* 'RE-wrenches' *Subject

Re: [RE-wrenches] Tesla 2.0

All – Yea, it’s amazing how much buzz Tesla was able to generate with their Powerwall without even having a product ready for sale. I’ve been keeping track of these next generation lithium-ion batteries so that we can keep up with the demand of all the tech savvy early adopters here in the Bay A

Re: [RE-wrenches] Sunpower micros and mysterious outages

Strange one. I would be surprised if the PV system has anything to do with this. We’ve experienced strange electrical intermittent problems and they have almost always been related to grounding or neutral problems. I realize that two different electricians have checked out the site, but maybe they

Re: [RE-wrenches] NM Cable temp rating, ampacity, application

Hi Eric, Regarding the supply side connection, check out this article: http://iaeimagazine.org/magazine/2013/11/16/supply-side-pv-connections-a-closer-look/ Check out 2014 NEC 230.50 – I don’t think NM is allowed. In our neck of the woods we need to use RMC or IMC. Secondly, I’d recommend

Re: [RE-wrenches] Polaris gone bad?

Hi Chris, I’ve contacted Ideal about the suitability for their copper crimp connectors to be used in outdoor locations in approved junction boxes. Their response was that they are listed to UL 486C and are designed to be used in approved outdoor boxes. I’ll forward the email to you off list.

Re: [RE-wrenches] Polaris gone bad?

As a related note, the 2014 NEC has an addition that allows field-installed drainage holes in junction boxes: We’ve found that installing drain or weep holes is a very good idea to keep water from accumulating in outdoor boxes and conduit bodies. August *From:* August Goers

Re: [RE-wrenches] Third Radian ---> Class T Fuse With/Without Fuse Holder

Hi William, Check out NEC 314.16(C)(2): I don’t know per se about putting fuses in conduit bodies, but the code allows for some limited splices, taps, or devices in conduit bodies. August *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *William Mi

Re: [RE-wrenches] 4 Wire Delta

We have done many high-leg delta installations with both single phase and three phase inverters here in the Bay Area. Besides the normal stinger-leg type issues of trying to install a single phase 120 volt load across the high leg, I’m not aware of any particular problems. Certainly we see many

Re: [RE-wrenches] Ginlong inverter current measured when no power being produced

transformer manufacturer, seems to hit the nail on the head: https://ctlsys.com/support/inverter-power-factor/ 😊 August Luminalt *From:* August Goers [mailto:aug...@luminalt.com] *Sent:* Monday, June 12, 2017 12:37 PM *To:* RE-wrenches *Subject:* [RE-wrenches] Ginlong inverter current

[RE-wrenches] Generator choice for Sunny Island

Hi Wrenches, especially those of you who work on off-grid projects, We have an upcoming off-grid project where we will be powering a storage container with electronics in it. The loads are mostly 120 volt but there is a 240 volt heat pump that might occasionally run. We’re AC coupling the Sunny

Re: [RE-wrenches] Generator choice for Sunny Island

:* Thursday, June 15, 2017 12:03 PM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Generator choice for Sunny Island Sho you want diesel, propane or natgas? Nathan is more reliable as it does not require a refuel. On Jun 15, 2017 12:02, "August Goers" wrote: Hi Wrenches, especiall

Re: [RE-wrenches] Generator choice for Sunny Island

1227 Greenfield, MA 01302-1227 USA phone: +1.413.773.0611 email: matthewsi...@gmail.com Original Message Below [RE-wrenches] Generator choice for Sunny Island August Goers august at luminalt.com Thu Jun 15 09:02:41 PDT 2017 Hi Wrenches, especially those of you who work on of

Re: [RE-wrenches] concrete roof tile install

Hi Jay - We don't do a whole lot of tile, but when we do we've switched to using a tile replacement mount product. Quickmount and EcoFasten both make similar products: http://www.quickmountpv.com/downloads/datasheet/QMPV-datasheet-QMTRM-TileReplacement-web.pdf http://www.ecofastensolar.com/store

Re: [RE-wrenches] concrete roof tile install

issues and stay away from self-waterproofing tile roofs that are older than 10 years or that show signs that they weren't installed properly in the first place. August -Original Message- From: August Goers [mailto:aug...@luminalt.com] Sent: Thursday, June 22, 2017 8:07 AM To: RE-wrench

Re: [RE-wrenches] Generator choice for Sunny Island

*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org ] *On Behalf Of *August Goers *Sent:* June-16-17 7:22 AM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Generator choice for Sunny Island Thanks for the good feedback folks! We are using a Sunny Island setup because

Re: [RE-wrenches] Generator choice for Sunny Island

27;ll be up and running next week and I'll keep you posted. http://www.kohlergenerators.com/home-generators/products/14RESA -August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com On Fri, Jun 23, 2017 at 3:46 PM, Dave Angelini Off

Re: [RE-wrenches] Generator choice for Sunny Island

The 14RESA unit we have has an integrated battery charger. We just need to wire a 15 A circuit from our backup panel to the terminals to keep the starter battery charged. I confirmed that the warranty is 18 months or 1000 hours of operation for offgrid use. August *August Goers* Luminalt Energy

Re: [RE-wrenches] Generator choice for Sunny Island

ldn't find any literature from US battery on recommendations for their AGM. August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com On Mon, Jul 24, 2017 at 5:36 AM, Drake wrote: > Are you getting a good taper charge with this system?

Re: [RE-wrenches] Generator choice for Sunny Island

27;ve been installing Sunny Islands in grid tied battery backup applications (with AGM batteries) for over 10 years now and they have been very solid. August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 www.luminalt.com On Tue, Jul 25, 2017 at 3:16 AM, Drake

Re: [RE-wrenches] TPO Roofing

lieve both a Chem Link M1 and Geocel 4500 can be used with primed TPO, but there may be more TPO-specific sealants available. August *August Goers* Luminalt Energy Corporation o: 415.641.4000 www.luminalt.com On Wed, Aug 30, 2017 at 11:00 PM, William Miller wrote: > Friends: > >

[RE-wrenches] Sunny Island grid tie battery back and backup stability issues with ABB

ugust *August Goers* Luminalt ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http:/

Re: [RE-wrenches] Sunny Island grid tie battery back and backup stability issues with ABB

ot;magic code " and walk me through >> the programming. Once the Sunny Boy was reset to operate on the lower hertz >> range everything worked great. You may have a similar situation, not sure >> if the ABB folks will help with the hertz adjustment but you should give it >>

[RE-wrenches] Sunny Boy Storage - backup unit

rstand the diagram correctly on the spec sheet, it looks like SMA is going the same route as Tesla where there will be a sort of automatic transfer switch (aka the Gateway with the Powerwall) at the hub of the system. Best, August *August Goers* Luminalt Energy C

Re: [RE-wrenches] Sunny Boy Storage - backup unit

Hi Sam - Yes, I believe SMA is planning on being compatible withe LG Chem battery. However, I'm referring to the transfer switch unit highlighted here in yellow, not the battery: [image: Inline image 1] *August Goers* On Tue, Oct 3, 2017 at 2:48 PM, Sam Haraldson wrote: > > Does

Re: [RE-wrenches] breaker instead of fused disco

eutility/electrictransmission/handbook/060559.pdf -August *August Goers* On Tue, Oct 3, 2017 at 7:25 PM, Jerry Shafer wrote: > Jerry > Historically the utilities require a bladed disco, we had one on a military > base which required a breaker by the base but we also were requir

[RE-wrenches] sizing up equipment ground per NEC 690.45

meant to only include PV source and PV output circuits: [image: Inline image 1] [image: Inline image 2] Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 www.luminalt.com ___ List sponsored by Redwood Alliance List Address: RE

Re: [RE-wrenches] Array Mock-up Software

Hi Chad - We've been using Solar Census which has some very nice features for sales reps. It is fast and easy to use - a layout can typically be created in about 15 minutes. It uses LIDAR data to calculate the pitch of the roof and estimate shade and we've found it to be generally quite accurate.

Re: [RE-wrenches] Outdoor rated insulation covering for Solar Water Heating Systems

Chris - I agree with Carl that aluminum "cut and roll" jacketing is the only way to go for longevity. It is a pain to install but once it's done it will last the duration of the system. There is a video on this website showing the idea: http://www.buyinsulationproductstore.com/aluminum-jacket-for-

[RE-wrenches] 120% Rule - applying to multiple load centers etc

Hi Wrenches, Please see question below forwarded from one of my fellow engineers. Thanks, August *From:* Eric Schoonbaert [mailto:e...@luminalt.com] *Sent:* Monday, May 07, 2012 9:38 AM *To:* August Goers *Subject:* 120% Rule The 120% rule, and how it is applied to panel board bus size

Re: [RE-wrenches] 120% Rule - applying to multiple load centers etc

ission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless!" ~William McDonough On Mon, May 7, 2012 at 10:55 AM, August Goers wrote: Hi Wrenche

[RE-wrenches] Independent vs common trip two-pole breakers

type busbars) seems to be more prevalent on the common trip models. Anyone a breaker guru who can explain why one might one or the other? Thanks, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 o: 415.641.4000 aug...@luminal

Re: [RE-wrenches] Solar sub-contractors barred from project publication

Jeff, Yea, sounds like a pain. We've been through this before with several high profile projects in the Bay Area. Luckily, we have a lawyer on staff and have gone through the waiver process in order to obtain marketing approval. It might be possible to obtain a waiver that blankets the future us

Re: [RE-wrenches] Wind Turbines killing birds and bats

Hi All Wind Wrenches, We have 5 turbines recently installed in the Golden Gate National park land in San Francisco. They are small 1 kW vertical axis units - I was not happy about installing vertical axis but that was what the client wanted. The good news is that each turbine is being monitored fo

Re: [RE-wrenches] Wind Turbines killing birds and bats

(and installers) to see. Thank you, Jason Lerner Waldron Power and Light Co. On Jun 22, 2012, at 8:01 AM, August Goers wrote: > Hi All Wind Wrenches, > > We have 5 turbines recently installed in the Golden Gate National park > land in San Francisco. They are small 1 kW vertical axi

Re: [RE-wrenches] Best practices for comp shingle flashing?

Hi Eric, We've used TTi, EcoFasten, and Quick Mount. I like Quick Mount the best but they are a bit pricy so we've been using Eco Fasten for the majority of our work over the last year. If anything, I've found that TTi requires more labor and is more likely to require shingle cutting plus I'm gu

Re: [RE-wrenches] S5! question

All - We attempted a couple of jobs with the S5! kit and no rails and lining everything up was tough. Pro Solar rail directly to the S5! clamps works great or Unirac with L feet even gives more installation flexibility. Sounds like almost all of the responses are along these same lines. -A

[RE-wrenches] Labels for PV systems

Wrenches, I'm still on the hunt for a good label supplier or method of making them ourselves. We install several projects each week and the label expense is not insignificant. We're currently using a mix of the Tyco labels, custom engraved labels, custom reflective labels required by some fire j

Re: [RE-wrenches] Power line communications interference

William, You might try calling Enphase again. I was discussing a similar issue with them recently and they said that they have a noise filter option for handling noisy lines. As with all tech support, some representatives are better than others. -August August Goers Luminalt Energy

[RE-wrenches] corrosion on SHW storage tank fitting

galvanized nipple to corrode so quickly. I wonder if there is a grounding issue with the tank or maybe it's just the nature of galvanized fittings. Best, August August Goers Luminalt Energy Corporation 1320 Potrero Avenue San Francisco, CA 94110 m: 415.559.1525 o: 41

[RE-wrenches] Independent vs common trip breakers

Hi Wrenches, Do any of you know the reason why we might use an independent trip versus a common trip two pole breaker for a solar inverter? My understanding is that the independent trip will only trip the individual line effected by the overcurrent condition compared to the common trip which wil

Re: [RE-wrenches] Independent vs common trip breakers

William, Good points. Keep in mind that both of these breakers have handle ties (both are two pole), it's just that one can trip independently and the other forces both to trip. What is the correct solution for 240 V solar inverters? It seems like common trip is the best way to go but I've not bee

Re: [RE-wrenches] SunnyIsland - was AC coupling and Outback inverters

I'm looking forward to checking out the SMA Smartformer. We're sending one of our guys to SMA training later this month to learn more about it is depth. Up to date, we used the Outback PSX-240 like the one found here to 120/240 step up: http://www.altestore.com/store/Enclosures-Electrical-Safety/M

Re: [RE-wrenches] Two NEC questions

Hi David and Rebecca - We're still in the 2008 code cycle here in California so AFCI hasn't become an issue yet. I just listened to a webinar by SMA last week and I believe that their AFCI Sunny Boys wont' be shipping for at least a couple of months. Rebecca, have you already installed this s

Re: [RE-wrenches] Two NEC questions

with detection since replacing PV arrays and other products may be far more costly than installing an AFCI detector. Bill. *From:* re-wrenches-boun...@lists.re-wrenches.org [ mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *August Goers *Sent:* Sunday, October 14, 2012 9:11

[RE-wrenches] center fed main panel and 120% rule

ple, is it okay to install our inverter breaker on either the bottom or the top? If not, then our only resort is to either upgrade the service or downsize the main breaker which isn't always possible to do. Thanks for your thoughts in advance. Best, August August Goers

Re: [RE-wrenches] center fed main panel and 120% rule

to these either. Kent Osterberg Blue Mountain Solar, Inc. www.bluemountainsolar.com On 10/15/2012 9:32 AM, August Goers wrote: Hi Wrenches, Here is yet another 120% rule question as it relates to center fed main panels. 2011 NEC 705.12 deals with inverter point of connection and 705.12(D)(7

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