Re: [RE-wrenches] Conductor supporting requirements

338.10(B)(4)(b) says to support in accordance with 334.30: 334.30 Securing and Supporting. Nonmetallic-sheathed cable shall be supported and secured by staples, cable ties, straps, hangers, or similar fittings designed and installed so as not to damage the cable, at intervals not exceeding 1.4

Re: [RE-wrenches] community solar

If you have a muni then it's possible, but I'd guess that with most investor-owned utilities they'd just laugh in your face. There are a few utilites out there that have done this- I think that Portland, OR and Seattle have this and we're working on it here in Orlando too. These links should h

Re: [RE-wrenches] SLDs with Mac

Nick, you can still use Visio/AutoCAD on the Mac if you install Parallels or VMWare, which allow you to run Windows programs. Either of those would run you about $80, which is cheaper than OmniGraffle. Each of these three software packages have trial versions so you can check them out before yo

Re: [RE-wrenches] SLDs with Mac

alters r...@solarray.com <mailto:r...@solarray.com> Solar Engineer On Apr 9, 2011, at 10:40 AM, Dave Click wrote: > Nick, you can still use Visio/AutoCAD on the Mac if you install Parallels or VMWare, which allow you to run Windows programs. Either of those would run you about $80, whic

[RE-wrenches] Fwd: Berkeley Lab Study Finds that Solar Photovoltaic Systems Boost the Sales Price of California Homes

All, just noticed that this email hadn't gone through to the wrench list. Good follow-up to our March discussion (subject line: Value of PV system to a home). Original Message Subject: Berkeley Lab Study Finds that Solar Photovoltaic Systems Boost the Sales Price of Californ

Re: [RE-wrenches] Hydrometer source

We used to buy temperature compensated hydrometers from AEE to include with the sale of a battery bank for off grid customers. My sales person says AEE is no longer carrying that item. I believe they were made by Dekka. Recommendations for a new source for battery hydrometers in the $8 to $ 15

Re: [RE-wrenches] National grid hertz adjustment

Dan, I think we're only looking at an error of 20 minutes per (8760 hrs x 60 min / hr) = 0.00381%, well within the frequency drift allowed under UL 1741. So as you point out, it would only be the shorter excursions away from 60.0Hz that would be the issue. This shift isn't the easiest thing in

Re: [RE-wrenches] Fed ITC

Can individuals take a Fed ITC on a SHW system installed on a second home property? David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 23 Years Experience, (802) 888-7194 _

Re: [RE-wrenches] enphase D380 reliability

, BUT are being discontinued and the enphase tech guy I spoke with said that they are slightly less reliable than the M190's. What have the wrenches experienced with enphase D380's? Thanks, Dave David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 ww

Re: [RE-wrenches] Fed ITC

gy to generate electricity for use in your home located in the United States. This includes costs relating to a solar panel or other property installed as a roof or a portion of a roof. The home does not have to be your main home. On 2011/7/9 9:24, Dave Palumbo wrote: Can individuals take a Fed ITC

Re: [RE-wrenches] pole mounts

. Dave From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of toddc...@finestplanet.com Sent: Tuesday, July 26, 2011 2:50 PM To: RE-wrenches Subject: [RE-wrenches] pole mounts Wrenches, Fact or fiction: Adding concrete to the inside

Re: [RE-wrenches] pole mounts

Roy, I have heard that the small amount of water from condensation will be absorbed by the concrete itself. Don't know for an absolute fact that this is true though. Dave -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lis

Re: [RE-wrenches] Trojan RE Series Tech question

Our go to guy at Trojan, Ron Parades, is evidently gone. That's what they said at his old phone extension at Trojan. I left a message for tech support there and have not heard back as of yet. Is there another Trojan Tech person to specifically ask for now? And is there one on this list helping

Re: [RE-wrenches] Grounding system for a shack on a frozen lake?

Per 690.41 you probably wouldn't need to ground it for a system like this, but I like the idea of dropping a ground rod down into the water. Then curve the end and find a big worm, of course. ** 690.41 System Grounding. For a photovoltaic power source, one conductor of a 2-wire system with a p

Re: [RE-wrenches] mechanical vs. electronic kwh meter

I just asked a guy I know in utility metering, and he confirms that there's no basis for the utility's concern. Their claim that backfeeding is a safety hazard could be an attempt to dissuade some non-PV folks from flipping their meters to steal power. Or that could be their justification to ch

Re: [RE-wrenches] Enphase M190 availability?

Do you know of a source for (18) enhase M190's? Thanks, David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 23 Years Experience, (802) 888-7194 _

Re: [RE-wrenches] 310.15(A)(2) Exception

As I read the rule, that 100' in the trench allows you to go 10' above grade on each side while just worrying about the ampacity in the 100' section (be sure to check that your terminals are OK). For 200' in the trench, you're still looking at 10' above grade on each side. The rule doesn't say

Re: [RE-wrenches] 310.15(A)(2) Exception

That's right, Drake. The long wire acts as a heat sink for that short section. On 2011/8/17 17:58, Drake wrote: I think this answers a question I was pondering. If a conduit is run on standoffs over a roof, the temperature is cooler than on the roof, so the derating of the wire's ampacity is l

Re: [RE-wrenches] Lithium Ion Phosphate for grid back up

We have a potential client for a net metered PV with battery backup system with a serious interest in using lithium ion storage batteries. I do not know of any systems that have used these batteries yet. From some quick calcs I come up with 105 LiFEYPo4 3.2 volt cells. 7 strings of 15 cells for 700

Re: [RE-wrenches] Pump

Hi Jeff, Do you see the increased pressure on the pump submerged an extra 180' deep as a non issue? I know with cheaper pumps it is an issue to consider. Here in the soggy northeast static water levels hardly fluctuate at all. Dave From: re-wrenches-boun...@lists.re-wrenche

Re: [RE-wrenches] Enphase 215

Do the 215's output more than 215 Watts? From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Keith Cronin Sent: Wednesday, August 24, 2011 12:21 AM To: RE-Wrenches Subject: [RE-wrenches] Enphase 215 Hey gang With the 215's on

Re: [RE-wrenches] Enphase 215

The inverter should be current-limited on its output. The other Enphases have a higher output power than rated (199 @ 190, 219 @ 210, if memory serves from earlier list posts), so this may have a similar window. 215Wac max inverter output / 240V = 0.896 0.896 x 17 = 15.23A 15.23A x 1.25 < 20A s

Re: [RE-wrenches] AUO Unison integrated inverter modules

Has anyone gotten their hands on the AUO modules with the built in micro inverter? Cut sheets on mono and poly modules. AC Unison PM240PA0 AC Unison PM250MA0 David Palumbo Independent Power LLC 462 Sol

Re: [RE-wrenches] Ladders for Inspectors

A letter from your insurance company may do the trick here. They probably wouldn't be too happy about the homeowner, curious child, OR inspector using your ladder even if you are on site watching it. On 2011/9/1 7:45, Jason Szumlanski wrote: Is anyone being forced to leave ladders up and secur

Re: [RE-wrenches] Designing PV systems for lightning prone areas

To add to Ray's comments, it's a good idea to minimize the area of your source circuits' wiring loops as well, to minimize voltage jumps from nearby strikes (of course, direct strikes blast a hole in the roof, so no suppression can really help you there). I have a DC arrestor from surgesuppress

Re: [RE-wrenches] Enphase M190 source?

I'm looking for 18 enphase M-190's for an installation here in Vermont. 72 cell modules 185 Watts. Anybody know of a source? David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 23 Ye

Re: [RE-wrenches] Module Load Rating

UL 1703 is a 30 psf positive (downward) or negative (upward) load, or a design load designated by the manufacturer. I've never seen a module advertising a 30psf loading requirement--everything I've seen is at least 50psf--which I take to mean that this "designated" design load is usually spec'd

Re: [RE-wrenches] Module Load Rating

agree that if Schott specs a UL test for 50 psf (ie a test of 75psf) they should call it that. Claiming 75psf under UL 1703 should therefore include testing at 112.5psf. On 2011/10/7 10:26, Jamie Johnson wrote: Dave, thanks for the clarification on the difference between NRTL and IEC tests

Re: [RE-wrenches] intermittent battery problem

I have been following this topic over the past couple of weeks. What Dave Katz said matches up with what I have seen over the years. Although it can be difficult to diagnose battery issues from long distance there has been a fair amount of information that points to sulfation. I think Mr. Katz is

Re: [RE-wrenches] SMA electrical noise?

Wrenches, This is a new one on me. Any ideas of what may be happening? In a follow up she said it happens every day. System was installed two months ago. SB8000US inverter 8.28kW array. << Dave We are experiencing electrical noise at dawn and dusk. The power back ups for our com

Re: [RE-wrenches] [!! SPAM] Re: SMA electrical noise?

id voltage would be a variable. Note: Hot temperatures have not been an issue here since system was installed. Dusk and dawn, when problem occurs, we've been seeing temps from 25 to 55 degrees F. Dave -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:r

Re: [RE-wrenches] OB Radian Inverter avilability

oes anyone know of availability of one Radian? Contact me off list if so. Thanks, Dave David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 23 Years Experience,

Re: [RE-wrenches] OB Radian Inverter availability

things about it. Dave From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Palumbo Sent: Thursday, November 03, 2011 7:44 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] OB Radian Inverter avilability We were recent

Re: [RE-wrenches] federal tax credit

I support what Daryl DeJoy said below. Although it's not that straightforward an issue. Check out http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=US37F&re=1&e e=0 you'll see that for Solar Electric, Solar Water Heating, Small Wind and Geothermal Heat Pumps it is stated "The home se

Re: [RE-wrenches] GT inverter

The Square D switches would work (as would others, I'm sure, but I knew how to find this file). And you don't need to break each pole twice: http://static.schneider-electric.us/docs/Electrical%20Distribution/Safety%20Switches/Solar%20Disconnect%20Switches/3110DB0401.pdf Note wiring diagrams 1A,

[RE-wrenches] Connectors and Crimpers

UL listing dictates brand specific application, but it's difficult to maintain down to the tool level... Anyone had any experience or problems mixing it up? Dave Bell Engineering Services NABCEP Certified PV Installer(tm) DC Power Systems & Solar Depot

Re: [RE-wrenches] calculating low string voltage

At an SMA training last year they recommended the following temperature adders: Open field: +22°C Rooftop, lots of ventilation: +28°C Rooftop, some ventilation: +29°C Rooftop, little ventilation: +32°C Rooftop BIPV, no ventilation: +43°C Façade, some ventilation: +35°C Façade, little ventilation

Re: [RE-wrenches] calculating low string voltage

alculation. Should I suggest that my students just use the inverter manufacturers' online tools, and forget about trying to run this voltage calc themselves? Thanks, Ray On 12/1/2011 6:30 AM, Dave Click wrote: At an SMA training last year they recommended the following temperature adders: Open f

Re: [RE-wrenches] Gross PV production meter options

We are installing a grid interactive, with battery back-up, OutBack Radian GS8048 with 5kW of PV. Vermont has a "Solar Adder" premium that varies from utility to utility but in this case adds 6 cents per kWh over and above net-metering (basically to come up to a par value of 20 cents/kWh for PV pro

Re: [RE-wrenches] SMA combi switch in s.s.

Marco, the easiest solution may be to just replace it with a 4-pole disconnecting combiner from another manufacturer. SolarBOS, for example, has one available in 4X (fiberglass or SS). On 2011/12/7 12:41, Marco Mangelsdorf wrote: Anyone ever come across the SMA combi switch in a stainless encl

Re: [RE-wrenches] Battery Backup for Older Enphase Systems

You could go with a Sonnen. That is meant to be AC coupled, and its a very simple install. Nice piece of equipment, but its expensive. We just installed one that has right around 8kw of Enphase M215 inverter output. So far, no issues. Cheers, Dave *--* *Dave Tedeyan* *Project Engineer

Re: [RE-wrenches] Battery Backup for Older Enphase Systems

this answered your question... If not, I'll try to respond quicker next time. Cheers, Dave > DAVE: > > How does the brute force OFF transitions of the 8K of Enphase AC-coupled > micro-inverters affect the AC loads being served by the Sonnen? Are > there any noticeable/measur

Re: [RE-wrenches] AFCI Faults, SMA Inverters, Solectria RSB's, & RF Signals

was less than 6 months ago and some of these will arc fault about once per year. Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com On Thu, Jan 25, 2018 at 8:52 AM, Steven Lawrence wrote

Re: [RE-wrenches] Looking for Solar Ready pedestal

and have never had an issue. Then you get 65A of backfeed capacity. Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com On Wed, Jan 24, 2018 at 1:28 AM, William Miller wrote: > Frie

Re: [RE-wrenches] experience with the Tesla Powerwall

the up front expense scares many people away. We are located in upstate NY which may have something to do with it. Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com On Tue, Feb 13, 2018 at 10

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

: https://www.fallprotectionpros.com/guardian-two-way-standing-seam-roof-anchor.html Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com On Sat, Mar 31, 2018 at 1:19 PM, Ray wrote: > Hi B

Re: [RE-wrenches] PV Cell Temperature Variation

south of the array casting a thin shadow. The hot cell pattern did not specifically follow the shade pattern on the front of the module. Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com On Fri

Re: [RE-wrenches] 5 battery strings

cost effective than just getting a whole new battery bank right off the bat when they have 10 batteries that have essentially never been used. Cheers, Dave *--* *Dave Tedeyan* *Senior Engineer* *Taitem Engineering, PC* 10 Verizon Lane, Lansing, NY 14882 Voice: (607) 930-3481 x6 www.taitem.com

Re: [RE-wrenches] Bi-Directional / Netmetering question

have the wrong voltage reference. Cheers, Dave *Dave Tedeyan* Senior Engineer | Taitem Engineering, PC 10 Verizon Lane | Lansing, NY 14882 o. *607.930.3481* x6 f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Honoree On Thu, Aug 16,

[RE-wrenches] PV210 Curve Tracer Issues

Seaward, and they gave me a free calibration, even though it had been well under a year since I owned it. But they did not address the issue I am seeing here. So does anyone know why I might not be getting a good curve, and if there is anything that can be done about it? Thanks, Dave *Dave Tedeyan

Re: [RE-wrenches] Multiple inverters

. No inspectors here seem to care as long as the labeling shows what is happening. Although we are also fortunate that most inspectors around here will not make us fix old work as long as we did not touch it and it presents no safety hazard. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem

[RE-wrenches] large(ish) AC coupled battery backup

whether this will be a whole home backup or just a subset of their loads, but they have two 200A panels on a single 200A service. Thanks, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119

Re: [RE-wrenches] large(ish) AC coupled battery backup

paralleled, does that jump up to a single 12kw input, or are you just limited to two 6kw inputs? Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy

Re: [RE-wrenches] large(ish) AC coupled battery backup

m the solar all the way back to the house. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Ho

Re: [RE-wrenches] rapid shutdown units for obscure inverter

em to not work at all. It held the string voltage down even when it should not have. The only way to get the string voltage back up was to physically disconnect the PV from the inverter. So we had to pull the rapid shutdown and will need to find another solution. Cheers, Dave *Dave Tedeyan, PE* S

Re: [RE-wrenches] rapid shutdown units for obscure inverter

I may have spoken too soon on this. It turns out that the LSOB system just does not work with PV charge controllers. The Princeton Power Systems DRI-10 inverter has charge controllers built in, which is why the system was not working. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem

Re: [RE-wrenches] Low OC Voltage

amera when the system is functioning can often show if 1/3 the module is not working or if there are some bad cells in the module. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taite

Re: [RE-wrenches] Residential tracker options

Chris, We have used AER for trackers. We've had good success with them. https://www.allearthrenewables.com/product/allearth-solar-trackers Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277

Re: [RE-wrenches] Low OC Voltage

modules for second hand use that otherwise would have ended up in the dump this way. Obviously though it wont be like new anymore. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com

[RE-wrenches] Sunpower Ensemble

MI's will need to be upgraded. Can anyone confirm this? -Will Sunpower AC modules be compatible? If anyone out there has any of this info, that would be much appreciated! Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca,

[RE-wrenches] Damaged in shipping

... but I am still not sure if it is right to charge the customer for all this back and forth when my actions have not resulted in a fixed and usable inverter. I'd appreciate anyone's thoughts and feedback on this sort of situation. Cheers, Dave *Dave Tedeyan, PE* Senior Enginee

Re: [RE-wrenches] Damaged in shipping

ly, I know that they are good people, who are also well connected in the area, so keeping a good relationship with them is certainly important. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119

Re: [RE-wrenches] Consolidating meters

over when the power gets cut off.) They also had a set list of approved meters that can be used for submetering. We were planning on using eGauges, but ended up needing to put in an approved glass meter as well. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South

Re: [RE-wrenches] SMA phantom arc faults

.. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Honoree On Mon, Sep 2, 2019 at 12:03 PM Je

Re: [RE-wrenches] SMA phantom arc faults

wer dealer and you are a Sunpower dealer yourself. If the original system was from a Sunpower dealer, you can also have the customer call Sunpower directly. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.111

Re: [RE-wrenches] SMA phantom arc faults

to show up again. Cheers, Dave On Sun, Sep 15, 2019, 20:33 frenergy wrote: > I've only had the "tapping" method work on SB-22 inverters, not on -40 > inverters. You gotta log on to the machine which I think you can only do > onsite. Has anyone ever done a reset of

[RE-wrenches] Running a grid tied system when the grid is down

d of setup before. Thanks much! -Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 20

Re: [RE-wrenches] Running a grid tied system when the grid is down

troller to initiate RSD. So this way it will continue to work with the grid down. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corpor

Re: [RE-wrenches] Running a grid tied system when the grid is down

g for in this particular case. Although I am still curious if others have retrofitted other systems with something like I was initially talking about for an inverter that does not have a SPS. I think that at least in this market a low end 3rd party solution could gain a lot of traction. *Dave Tedeya

[RE-wrenches] Eversource utility in CT

the road)? This is a fairly simple roof mounted system, <25kw. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best

[RE-wrenches] SPR-5200 inverter parts

inverter. Has anyone experienced this, and would a replacement board fix the issue? And would anyone have anything like that available? And if not, can anyone even get a grounded inverter these days? Sunpower tells me to get a SB6000US, but I cannot even find one of those. Thanks, Dave *Dave Tedeyan

[RE-wrenches] trickle charger for 4 12V batteries

? And is it best to get 4 separate 12V chargers, one 48V charger, or a single 12V charger and put them all in parallel? Or am I just overthinking this? Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f

Re: [RE-wrenches] SolarReady Service Panel vs adding Supply Side connection?

something in 2017 code makes this all not possible, as we are still on 2014 in NY. See 705.12(D)(2)(c) Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability

Re: [RE-wrenches] non-sensor based tracker controller

Hey Mac, AER (All Earth Renewables) trackers are a dual axis tracker that uses GPS to follow the sun. We've had good luck with them. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277

[RE-wrenches] Xantrex SW 4048 grid tie mystery

e multiple N-G bonds could be causing these issues. Does anyone have any ideas? Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design C

Re: [RE-wrenches] Xantrex SW 4048 grid tie mystery

Dave, Sorry, misspeak on my part. It is DC negatives and grounds that are tied together. No neutrals in the DC box. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar

Re: [RE-wrenches] Xantrex SW 4048 grid tie mystery

. Can you tell me a little more about what operation this would confirm? The system is not AC coupled. I'll report back with what I learn. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277

Re: [RE-wrenches] Xantrex SW 4048 grid tie mystery

to begin with and it was not until many hours later that the issues with powering the backed up loads started appearing. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com

Re: [RE-wrenches] Xantrex SW 4048 grid tie mystery

grid connection does not seem to work. Or maybe it would not waste too much energy to use the bulk charge timer initiate a bulk charge every evening after it has been selling all day? Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14

Re: [RE-wrenches] Inverter Output Circuit OCPD Meltdown

eaker in there to fail. Another thing I've seen burn marks on a breaker like that just due to loose connection (is what it appeared to be, anyway) arcing over time. Good luck, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *60

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

Since Enphase stopped making the old M215's, they have been sending out M215's that look like IQ microinverters, with an adapter. These supposedly work with the old Envoy. I am not sure if they are only available as warranty replacents, or if you can purchase them new though. Cheers, Da

[RE-wrenches] Mate3 not saving data

mware with the SD card. But there are never any logfiles on there. Any suggestions? Thanks! -Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design

[RE-wrenches] Outback EQ not holding voltage

with this before and have any suggestions on how they fixed it? This system is 3-4 years old, and the issue only started in the past year or so. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277

Re: [RE-wrenches] Outback EQ not holding voltage

Brian, I had tried lowering the EQ voltage by 0.4V. The batteries still get up to the EQ voltage, but then fluctuate right at or 0.1V below. Dave, The EQ countdown timer does not count down when the battery voltage is below the EQ setpoint (even if by 0.1V). And since the timer never gets to 0

Re: [RE-wrenches] Outback EQ not holding voltage

el battery strings all have the same length of premade cable, so current should be balanced (unless there is a dead cell or two in there...). Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.

Re: [RE-wrenches] Outback EQ not holding voltage

to 61.6V it hovers around 61.6 and 61.5. Lots of good info and ideas here, thanks all. -Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design

Re: [RE-wrenches] Rapid Shutdown Compliance

about? It seems that this would solve many of the issues associated with MLPE, but still be able to have the benefits. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar

[RE-wrenches] Skybox

same niche. Are those even available for purchase yet? If so, does anyone have experience with these? Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustaina

Re: [RE-wrenches] Skybox

way more conservative as to what loads are allowed to be backed up. Also, is there an inverter bypass built into the BOS enclosure, or do you need to wire up a separate one in case of inverter failure. Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street

[RE-wrenches] Princeton Power UL Listing

press release from Princeton Power stating that the DRI-10 inverter has received its UL listing. But does anyone out there actually have the certificate that they would be willing to share? Thanks! -Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY

Re: [RE-wrenches] Oversized meter enclosure for line side connection recommendation

Make sure that your utility allows for this. NYSEG in NY gets very upset if you put anything in a meter enclosure other than the meter. Cheers, Dave On Thu, Jun 18, 2020, 10:00 AM Kristopher Schmid wrote: > If you are going to replace the meter socket, using a 200 amp Milbank and > a

Re: [RE-wrenches] lay in lugs

Burndy's changed its part# from the CL50-DB-T to the CL50-1TN. Still direct-burial, still tin-plated, still "commonly used for solar panel grounding." The tech support guy I spoke with last December said that their lugs are now all direct-burial, so they decided that there wasn't a point in kee

Re: [RE-wrenches] plug in gridtied inverter

I'm not sure what my favorite part is: 1. the note at the bottom of the page of "NOTE: This unit is NOT UL listed so it can only be represented as an experimental device. It does shut down and disconnect from the grid if it senses that the grid has gone down (power outage). This protects utilit

Re: [RE-wrenches] residential ITC and second homes

From DSIRE: http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=US37F&re=1&ee=1 "The home served by the system does not have to be the taxpayer’s principal residence." And from the IRS: http://www.irs.gov/pub/irs-pdf/f5695.pdf "Your main home is generally the home where you live most

Re: [RE-wrenches] What is a "direct-current system"?

minal. DKC Original Message Subject: Re: [RE-wrenches] What is a "direct-current system"? From: Peter Parrish To: 'Dave Click' Date: 2009/6/19 14:12 No, the inspector is saying that 690.47(B) applies, and as a consequence, 250.166 applies. He didn'

Re: [RE-wrenches] Inverter AM Interference

Weird! I was looking through the list archive for info on lightning arrestors earlier this afternoon and coincidentally, this email may help, from Aaron Wellendorf on 2006/4/12: http://lists.re-wrenches.org/htdig.cgi/re-wrenches-re-wrenches.org/2006/019214.html "I have used a different brand of

Re: [RE-wrenches] Tube solar collectors

Yes they do: http://www.solyndra.com/Products/More-Electricity Original Message Subject: Re: [RE-wrenches] Tube solar collectors From: Joel Davidson To: RE-wrenches Date: 2009/7/21 09:46 Hello Kelly, Thanks for the feedback. Does anyone know if the Solyndra CIGS modules c

Re: [RE-wrenches] String Combiners for a-Si modules

Peter- Appendix J of "PV and the NEC" covers this, too; as Kirpal said, you'll need to know the series fuse rating for the module first, though. http://www.nmsu.edu/~tdi/pdf-resources/pdf%20version%20divided%20PV:NEC/APPENDIX%20J.pdf Original Message Subject: Re: [RE-wrenche

Re: [RE-wrenches] Watt-hour meter

something like this? http://www.hialeahmeter.com/eawame.html Original Message Subject: [RE-wrenches] Watt-hour meter From: Eric Andrews To: RE-wrenches@lists.re-wrenches.org Date: 2009/7/28 13:16 I’m looking for a Watt-hour meter that is hard-wired (not a Kill-O-Watt plugin)

Re: [RE-wrenches] High snow load on PV Modules

SolarWorld modules are 5400pa-rated too, but that's "only" 113 psf, right? These might be OK if you do a full clamp along the long sides of the modules (for SolarWorld at least, the 5400pa rating was determined per IEC 61215, while supporting only the short sides), but it's obviously not withou

<    1   2   3   4   5   6   7   8   9   10   >