Re: [RE-wrenches] White Paper on on the affects of a "snow, melt, refreeze process" (no pun intended)

Lee I worked on a job on Washington pass in Washington state about 12 years ago, near the border of Canada in the North Cascades wilderness area. Design snow load was specified 200 #/sq ft as I recall (far greater than the forces on a module at 120 mph wind load) and the Cascades are known for w

Re: [RE-wrenches] lifting shingles

Bennett I have a roof similar to the one you described. It was designed for coastal regions of Alaska, heat-freeze cycling and high winds. Roofer warned me that I better plan my penetrations because after season in the sun I would never be able to lift the shingle again! That being said have yo

Re: [RE-wrenches] Megger for array testing

levels without a problem. Bill Bill Hoffer PE Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatchee WA 98802-3941 suneng...@gmail.com (509)470-7762 Cell(509)679-6165 On Wed, Nov 17, 2010 at 9:05 AM, Joel Davidson wrote: > Hello Drake, > > I think you should talk t

Re: [RE-wrenches] Strawbale wall penetration

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Re: [RE-wrenches] NABCEP is Union Based? That's news to me!

you can do without it , more power to you, but don't whine to me about it being unfair that we want to toot our horn about what we are trying to do for this industry! Bill -- Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatche

Re: [RE-wrenches] Spot welding PV's to rails for theft prevention: bad idea?

-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquet

Re: [RE-wrenches] Heavy Duty Modules?

pile up is essential. www.silicon-energy.com or call Mike Farrell mfarr...@silicon-energy.com supp...@silicon-energy.com (360)539-1851 cell (425) 319-2780 Bill Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatchee WA 98802

[RE-wrenches] New Inverter or New Scam????

Beware! Thanks for any and all comments Bill -- Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatchee WA 98802-3941 suneng...@gmail.com (509)470-7762 Cell(509)679-6165 ___ List sponsored by

Re: [RE-wrenches] SolarWorld Poly

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Re: [RE-wrenches] Module Racking Attachment to SIP Roof

t; > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out partici

Re: [RE-wrenches] High PSF Mods?

cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Bi

Re: [RE-wrenches] High PSF Mods?

ons & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participan

Re: [RE-wrenches] array commissioning

agazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiqu

Re: [RE-wrenches] battery buss bar stock

Jay Just copper stock is not good enough necessarily...make sure it is specified for electrical current carrying. I have seen some spectacular failures with people using plumbing pipe malled flat and drilled. It is was too soft to handle the heat at high currents! I do not know the exact specs,

Re: [RE-wrenches] heating a lithium battery bank

thought of? Bill hoffer On Feb 28, 2018 8:15 AM, "Daniel Young" wrote: These issues are not lost on me for sure. I have to plan out a new protective setup to try to ensure that if the temperatures drop and the battery bank hits LVD, that the array cannot just charge the battery back

Re: [RE-wrenches] rail less standing seam attachments

Jay Just finished using S5PV railess on standing seam roof 12x12 pitch. Worked great, but wire management was challenging with minimal clearance under modules. Had to think ahead to make it work. And still was a struggle. I also used 6 rather then 4 per module to even out the loads on the roof

Re: [RE-wrenches] PV Cell Temperature Variation

Corey I consulted and did some independent tests with a module manufacturer who had some modules with low Power output and curve traces similar to yours. They however could detect no abnormal cracks in the modules with EL testing. I also detected no issues on the thermal image at no or low power,

Re: [RE-wrenches] Mission PVs

It is actually better for minimum shipping damage stacked on their sides. There is a right side to start removing and a really wrong side which you will know immediately! Usually marked start removing this side, follow manufacturer instruction when in doubt. I am not familiar with Mission, but ot

Re: [RE-wrenches] Convex modules

Jay Not sure what you are implying by this comment. I do not believe that glass is pre bowed by any glass manufacturer that I know of nor on purpose by a module manufacturer. Glass is manufactured shipped and stored flat on a pallet. How were the modules Shipped? If glass down with no packing i

Re: [RE-wrenches] Rail-less Racking

why I opted for railess, since the cutting of rails would have been very time consuming. Bill Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 420 SE Wyers St ,# 1823. P.O. Box 1823 White Salmon, WA 98672 bhof...@sunergyengineeringservices.com Cell:(509)679-6165

Re: [RE-wrenches] Fwd: Solar Panels for 98 Cents Per Watt

us hot spotting issues. I suspect the line between "A" and "B" is pretty well defined and between "B" and "shunt" cells is a little bit gray. Many of all three categories are not distinguishable by visual inspection. Beware of the great deal.there i

Re: [RE-wrenches] Evergreen

the grid. Resultng in a near zero energy home, even though I have electric heating (at $0.0175/kw hydro power off the Columbia no other source makes sense). In addition my energy demands are quite low with my small passive solar straw bale house. Bill Hoffer PE Sunergy Engineering -Original

Re: [RE-wrenches] DC wire sizing

ice! When we are talking about Mega-watt commercial installations, It would be pretty silly to have a system shut down (ie lost production = lost investment money) because of saving some money on wire. Bill Hoffer PE Sunergy Engineering Services PLLC On Thu, Apr 8, 2010 at 11:41 PM, R Ray Walt

Re: [RE-wrenches] Rip in panel backing

> Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out p

Re: [RE-wrenches] Who has the best overall solar racking solution?

Dyno Rack tool less best flat roof ballasted! Bill On Sep 10, 2013 2:12 PM, "Jay Peltz" wrote: > Sub question/ > > Best ballasted flat roof rack? > > Jay > Peltz power > > Sent from my iPhone > > On Sep 10, 2013, at 1:04 PM, James Rudolph > wrote: > > Greetings Fellow Wrenchies, > With all the

Re: [RE-wrenches] Adding Charge Controller(s)

t; http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > >> > >> List rules & etiquette: > >> www.re-wrenches.org/etiquette.htm > >> > >> Check out participant bios: > >> www.members.re-wrenches.org > >> > >> >

Re: [RE-wrenches] Square D Disconnects mounted on the slope of the roof.

Rd., > Livermore, CA 94551 > > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re

Re: [RE-wrenches] PV Wiring methods

the rest and in quantities of 500 buy direct for $.28 - .29 each depending on the style. They are open to custom design ideas, made in the good old USA, and customer service was outstanding too! Bill Hoffer Sunergy Engineering Services PLLC On Thu, Nov 14, 2013 at 11:08 AM, Jason Szumlanski

Re: [RE-wrenches] Return on investment information

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Re: [RE-wrenches] PID

ss & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out p

Re: [RE-wrenches] MC 3 cables

Chris I have had great luck with PV Cables. Quick service and reasonable prices. They do have MC-3 connectors and custom made cables. Bill On Fri, Jan 31, 2014 at 11:01 AM, Chris @ The Oasis wrote: > Dear

Re: [RE-wrenches] 72-cell modules

Tump Try Silevo, they are currently making a 125mm 72 cell module in China. This is thier 36MW proof of concept plant ( lower cost HIT technology like Sanyo , cystalline cell with amorphous coating giving higher efficiency

Re: [RE-wrenches] Subject: Re: Best Ground Racking?

Ray Gave up on stainless fasteners and anti-sieze a long time ago after discovering Dura-Con Fasteners . Better corrsion resistance against aluminum than stainless and no galling! We have used them for training where systems are assembled and disassem

Re: [RE-wrenches] Autocad

William I second using Sketchup and Layout for $500 . I have seen the add on Roof Pro Plug in and Skelion ( $199) demo that lays out the array and links to PVwatts for power analysis. Plus Combined with google earth , does great shading analysis I. I think you can do a quick design in an hour

Re: [RE-wrenches] Nano cleaning and sealing products.

James It is probably a Silane solution ( Silicon based), it is commonly used for skyscraper windows to insure that the Very High Bonding (VHB) tape used to adhere them is not undermined by water intrusion I have also seen it used in solar modules on the edge of the glass prior to lamination to k

Re: [RE-wrenches] Solar World shattered module

Dave Sometimes tempered glass will have a defect that will cause spontaneous breakage from a relatively small stress in exactly the right spot. We have seen that happen during module manufacturing, so usally it never makes it out the door. What does the shatter pattern look like. If it is from

Re: [RE-wrenches] Article 690, or The Haves Vs. Have Nots

Dave I agree, in the case of microinverters, you already have a main PV System disconnect at the Load Panel to shut down the system that is readily accesible. I would consider the disconnect on the roof as a supplemental disconnect for the purposes of maintenance by authorized personal that only

Re: [RE-wrenches] Module Degradation - voltage or current?

Dana Bill Brooks, passed on past data, ( correct me Bill if I am out of date here) recommends 1% Power loss per year with approximately 0.5% current and 0.5%voltage. That is also what Solar Energy International Best Practices curriculum recommends. Based on some newer data from larger projects r

Re: [RE-wrenches] AFCI disturbances.

William I agree with Bob-O, wire nuts are not the best choice for DC connections, for all the reasons he mentioned, but SMA claiming that wire nuts are causing arc faults seems like a long shot at covering up an arc fault detection nuisance tripping problem. IMHO AFCI protection circuits are far

Re: [RE-wrenches] Diode Failure

Corey The most common cause of diode failure are surges.   They usually fail shorted initially and eventually open circuit. Hopefully they are replaceable and not potted! Bill Sent from my Verizon Wireless 4G LTE DROID Corey Shalanski wrote: >___ >

Re: [RE-wrenches] PV panel backing

Ron A silicon based spray sealer should work, just make sure whatever you use is air cured and not accelerated cured by using acetone or some other solvent that may get trapped and eventually cause corrosion of the cells or cell interconnects. Even if it buys you a couple of years that is better

Re: [RE-wrenches] Cooler Modules

Mark Loaded modules will have hotter cells. I know this from searching for bad cells with a thermal camera. At open circuit I could not see a difference, but short circuit or loaded I could see 20 - 30 C increase in mismatched cells . Bill On Wed, Sep 10, 2014 at 9:43 PM, Mark Frye wrote: > F

Re: [RE-wrenches] Cooler Modules

Bill Flir E40, works well and has some good features that make it easy to write reports with the software. E60 is similar with additional features, but a little more expensive. IMHO any of the E - series is a pretty good bet. Bill Sent from my Verizon Wireless 4G LTE DROID Bill Loesch wr

Re: [RE-wrenches] Microfractures in PV Modules

Christopher There are some level of micro fractures that are always present in cells and not visible to the naked eye. Some of these will produce visible fractures over time from loading and flexing of the module from weather and temperature changes. The micro fractures can be an issue with perf

Re: [RE-wrenches] module testing

Marco TUV can test to UL1703 standards not just IEC standards. UL still trys to make a big deal about the UL mark vs all other testing labs, but any NRTL ( Nationally Recognized Testing Laboratory) can certify to UL standards. The mark is what counts and it will state specific standards tested t

Re: [RE-wrenches] PV Mod skylight (clear backsheet)

Eric Try Lumos Solarscape s Bill On Thu, Mar 19, 2015 at 8:33 AM, wrote: > Anyone have a recommendation for a PV module that doubles as a skylight, > i.e., has a clear backsheet? I have a client who would like to explore the > option of p

Re: [RE-wrenches] Recommendation for torque tools

Bill I like the CDI product line and use a dual scale dial indicator model for larger fasteners and their driver for smaller electrical connections. Good quality and pricing. They contract produce for SnapOn ( owned by them now) and have had their own line now for qui

Re: [RE-wrenches] Design Class Recommendations

Howie I am biased to SEI. Full disclosure I do teach for them. Great instructors and a solid curriculum. Options for online, in person and hands on. Great thing about SEI is most instructors are part time teachers working full time in the industry, so students get a good industry perspective. R

Re: [RE-wrenches] Module defect? Cell interconnections

Benn I personally would not accept these modules, the defect is what you can see and makes me wonder of how good the remainder of the soldered connection is. It is a red flag and very likely will become a problem in the future under load thermal cycling. Shading of the cell is the least of the w

Re: [RE-wrenches] SolaEdge Outback AC Coupling

Kirpal Actually the Radian system does adjust the battery voltage point that it disconnects the grid inverter based on the stage of the charge timers using the 3 stage inverter charger set points. The FNDC will also over ride the timers if all fully charged parameters are met. It has the advanta

Re: [RE-wrenches] SolaEdge Outback AC Coupling

ng power from the > grid tied inverters is regulated allowing for healthy multi stage > charging. > Another thing to consider if using the Outback Ac coupled solution is that > your DC coupling options becomes limited in the same load center > Cheers > Kirpal > On Jun 30, 20

Re: [RE-wrenches] Clamp on Meter

Dana I highly recommend the Power Quality Clamp meter. My most useful meter, I will never buy just a plain old clamp meter again, for a few dollars more having the ability to measure ac/dc power directly is huge! I have had the Seaward Power Clamp for several years now, when it was the only sing

Re: [RE-wrenches] Trina Module Annual Degradation

systems it is occurring more quickly. Bill Hoffer On Thu, Jul 16, 2015 at 10:33 PM, jerrysgarage01 wrote: > Wrenches > We used to use Sharp but now its Trina, containers of 250 watt modules, > data logging has not shown any abnormal power loss. Now that I say this > Trina as the

Re: [RE-wrenches] PV testing

Bill Performance verification would be your first test that can be done with 2 clamp on meters ( idealy two Power meters like the Seaward Clamp Power Meter ) , ie testing under load knowing the irradiance and cell temperatures and measuring watts in and watts out of the inverter. With that data y

Re: [RE-wrenches] Silicon energy

WA Silicon Energy has been shut down for almost a year now, leaving behind a lot of warranty claims for delaminated modules. Not a pretty picture at all. Hope you have only the first generation modules, before they went to a thinner lamination.. Bill On Dec 18, 2015 3:51 PM, "Solar" wrote:

Re: [RE-wrenches] Inverter identification quiz

Jay Eltek Theia HE-t, highest efficiency transformer based inverter..97%..no longer available! Too bad damn good inverter! Bill On Jan 17, 2016 7:37 PM, "Jay" wrote: > Hi all > > Home power, latest issue 171, page 18 > > Has a photo of an inverter (display only no name)that wasn't doing a g

Re: [RE-wrenches] SW series fuse rating

Jay I believe that is the same. I hate that they say it that way...very confusing. I think it comes from the way it is tested by UL. They reverse current at 1.5 times the fuse rating to insure the fuse size is correct (fuse plus safety factor). Bill On Mar 18, 2016 6:56 PM, "jay" wrote: > HI

Re: [RE-wrenches] SW series fuse rating

Rebekah I am not 100% sure but I think that there is often confusion between max fuse and max reverse current. When you list a module you request a fuse rating , in this case 4 A and UL will test it by applying a max reverse current of 1.75(max fuse rating) or 7 Amps with out a fuse to insure tha

Re: [RE-wrenches] Clearing Snow From Modules

thermal shocked them washing them off I am sure that they would find a clause in their warranty to weasel out of it! Bill Hoffer On Wed, Feb 1, 2017 at 6:19 PM, frenergy wrote: > Drake, > > I am no expert, BUT, about a year ago I covered an older > not-in-service PV wi

Re: [RE-wrenches] SMA and Tigo

Matt I believe that Itek Energy will be shipping either June 1 or July 1 with Tigo ready modules. Please contact contact Karl Unterschuetz - ka...@itekenergy.com about sales. They are calling for a pre-order since they are transitioning from their old junctionbox to the Tigo. Tell him Bill

Re: [RE-wrenches] Shedding ice

s:www.members.re-wrenches.org > > > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org &g

Re: [RE-wrenches] Apparent power

see how the added features can be cost effective. IMHO, I am not convinced that this inverter is really doing what they are claiming, however I would love to be proved wrong! Bill Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East

Re: [RE-wrenches] AUO ac moudles

t of grief for us installers. IMHO installers need to beware of this hassle potential and at a minimum insure that their local inspector accepts it before installing and make sure your insurance is up to date! It would be interesting to hear from Bill Brooks on this one! Bill Bill Hoffer PE NABCEP

[RE-wrenches] Installations in High Salt Spray Environments

writing warranties that give them an out. Any info on what products have done well ( or not) and best practices to minimize corrosion issues would be very welcome. Thanks Bill -- Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatchee

Re: [RE-wrenches] Washington made

Mark Try http://bluefrogsolar.com/wa-made-solar-products I believe that they are now shipping a Washington made micro inverter. There is one other microinverter, but I do not believe that they have passed UL yet and have not gone public. Bill Hoffer Bill Hoffer PE NABCEP Certified Solar PV

Re: [RE-wrenches] poly tape

@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm >

Re: [RE-wrenches] L feet no flashing in shingle roof

ists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > > > List rules& etiquette: > > www.re-wrenches.org/etiquette.htm > > > > Check out participant bios

Re: [RE-wrenches] L feet no flashing in shingle roof

screws on that site but none called "structural". > > Thanks > > Chris > > On Mon, Jul 2, 2012 at 7:08 PM, Bill Hoffer wrote: > >> Mark >> >> Lags for me are old hat after using the newer structural screws. I get >> them local from www.screw-p

Re: [RE-wrenches] L feet no flashing in shingle roof

.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > &g

Re: [RE-wrenches] module glass

Marco Textured glass facing the sun accumulates dirt faster, will not readily self clean from rain and cannot be easily cleaned in my experience. Textured surface face down, smooth side sunny side up works like any other module. Bill On Jul 23, 2012 11:35 AM, "Marco Mangelsdorf" wrote: > Does

Re: [RE-wrenches] Ilsco SGB bonding lug

Jay Seems to be the preferred method in salt spray environments like the South Pacific Islands! Copper and Aluminum don't play well together under those conditions Bill Hoffer On Mon, Aug 27, 2012 at 1:04 PM, Jay Peltz wrote: > Hi Brian > > Isn't another way to go: >

Re: [RE-wrenches] Ballasted Roof Racking Recommendations?

Ryan I do not think that they have a 30 degree option, but I have been pretty impressed with Dynoraxx <http://dynoraxx.com/>tool-less approach and using fiberglass non-conductive material ( read no grounding of racking). Now all we need is a fiberglass non-conducting module frame! Bill

Re: [RE-wrenches] 120V grid tie inverter recommendation

ules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Bill Hoffer PE NABCEP Certified Solar PV Installer™ Sunergy Engineering Services PLLC 2504 Columbia Ave NW East Wenatchee WA 98802-3941 suneng...@g

Re: [RE-wrenches] Enphase voltage out of range errors

enches-re-** > wrenches.org<http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> > > List rules & etiquette: > www.re-wrenches.org/etiquette.**htm<http://www.re-wrenches.org/etiquette.htm> > > Check out participant bios: > www.members.re-wren

Re: [RE-wrenches] Seaward Solarlink

Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Bill Hoffer PE NABCEP Certified Solar PV Inst

Re: [RE-wrenches] Seaward Solarlink

> ** ** > > Kirk Herander > > VT Solar, LLC > > dba Vermont Solar Engineering > > NABCEPTM Certified Inaugural Certificant > > NYSERDA-eligible Installer > > VT RE Incentive Program Partner > > 802.863.1202 > > ** ** > > *From:

Re: [RE-wrenches] Cable tray

eply immediately to the sender. >> >> *P* Please think of the environment before printing this email >> >> ___ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >

Re: [RE-wrenches] Micro-inverters for 3-phase 220/127 in Mexico

s & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Bill Hoffer P.O. Box 1823 White Salmon, WA 98672 suneng...@gmail.com ___ List sponsored by Home Power magazine

Re: [RE-wrenches] Cleaning Modules

iquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > ___ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email a

Re: [RE-wrenches] PV-direct electric water heating

_ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wre

Re: [RE-wrenches] modules

List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > -- Bill Hoffer P.O. Box 1823 White Salmon, WA 98672 su

Re: [RE-wrenches] Adhesives. (Was "used panel mount questions")

Also realize that most chaulks use acetone to cure faster, not good for back sheets. PV adhesives are air cured and take a lot longer to become full strength, at least 24 hrs under ideal conditions! PV804 is bomb proof, I have done adhesion tests on junction boxes And I literally had to destroy

Re: [RE-wrenches] used panel mount questions

Don Actually Very High Bond (VHB) foam tapes are incredibly strong and if formulated for glass, will work quite well. They have been using it for decades to mount heavy glass and aluminum panels on curtain walls on sky scrapers. I would trust it totally as long as it was not bought at HomeDepot.

Re: [RE-wrenches] Thermal imaging

Andrew I highly recommend any of the fluke E series. Better resolution and you can get accurate temperature measurements at a safe distance from live circuits. IMHO , any lower model, you will wish you could do more! I also recommend Solar Energy International's Advanced tools lab, a week of han

Re: [RE-wrenches] Thermal imaging

sts.re-wrenches.org >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & et

Re: [RE-wrenches] Thermal imaging

ome Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wre

Re: [RE-wrenches] Panels appear to be different colors

guessing the lower quality guys are not holding their suppliers to the same standard QC. However I have no data to verify that and like I said probably not a serious hit in performance. Bill Hoffer On Fri, Nov 5, 2021, 3:50 PM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > I&

Re: [RE-wrenches] Panels appear to be different colors

any OEMS outsource cells, is it possible the cells came from different > cell companies? > > Jay > Peltz power. > > On Nov 5, 2021, at 7:27 PM, Bill Hoffer wrote: > >  > Like any manufacturing process there are variations, especially solar > cells, regardless of typ

Re: [RE-wrenches] Panels appear to be different colors

Nov 6, 2021, at 9:18 AM, Bill Hoffer wrote: > >  > Jay > > That is possible. Also the sorted cells are packaged in boxes that do not > match the number needed per module (and there is always some breakage > during soldering and layup) so it is likely that they are mixing lots