[RE-wrenches] Energy Storage Equipped Appliances

Haven't seen this discussed on the list yet: startups are making appliances with integrated batteries,"Energy Storage Equipped" appliances. Good podcast interview with someone from DOE on how these are being funded and

Re: [RE-wrenches] Utitlity Rate question

NREL’s free SAM tool can model tiered & TOU rates with PV generation: https://sam.nrel.gov/ It’s a little clunky to use on every project, but everything can be exported to spreadsheets to dial it in further/work outside of the tool. Consumption data can also be input into the tool. -- *Phil

Re: [RE-wrenches] California SGIP Program requirement for 10 year service warranty and maintenance contract

Hi Vic, I had an SGIP application approved with the following language: Contractor provides a 10-year service workmanship warranty covering the battery, inverter, and installation, and references Attachment A, *Battery **Limited Warranty*, a 10-year manufacturer warranty for the battery I

Re: [RE-wrenches] ANSI-C12.20 compliant meters for PPAs

eGauge is also ANSI-C12.20 compliant On Wed, Nov 7, 2018 at 5:55 AM Lloyd Hoffstatter < ll...@sunstruckconsulting.com> wrote: > Jerry, > > > > The Locus meters are a pretty straightforward solution. > > > > Best regards, > > > > Lloyd Hoffstatter > > Sunstruck Consulting > > > > Sent from Mail

Re: [RE-wrenches] Whole house energy moniters

This product by Sense is similar to CURB (or eGauge , or other multiple-CT devices), but you install a single set of CTs on the main feeds (plus on on the solar if you have it). The device then 'learns the electronic signature' of the loads in the house to disaggregate what

Re: [RE-wrenches] New Pge TOU rates

I use NREL's SAM software for TOU analysis and rate comparisons. Free, but you don't get the nice proposals that come with EnergyToolbase. Also not as helpful without a customer load profile to use as the baseline. https://sam.nrel.gov/ -Phil Boutelle, PE On Mon, Jun 27, 2016 at 9:54 AM, August

Re: [RE-wrenches] Smappee anyone?

I haven't installed this brand, Smappee, but I have installed a Verdegris Technologies unit, another nonintrusive load monitoring (focusing on commercial, while Smappee looks geared towards residential). According to wikipedia, the technology has been around since the 80's, and was invented at

Re: [RE-wrenches] Off-grid e-gauge system

William, The installer or end user can rename the graph legends themselves by going to the eGauge settings menu and editing the 'register' fields under the installation settings. -Phil Boutelle On Thursday, December 27, 2012, William Miller wrote: John: If we can just get one more tweak:

Re: [RE-wrenches] SI5048 Commissioning Test

Carl, If you envision a time when the gen could be on simultaneously with the SB, ie grid down low SOC high load, test those conditions. Depending on the generator brand and firmware, and also on the SI firmware, this test often gave the generator fits. -Phil Boutelle On Monday, October 22,

Re: [RE-wrenches] Fronius State 104

Jeff- See if you can find a PowerSight power meter (http://www.powersight.com/; in PGE territory, we can borrow them from PGE for free). This will allow you to log and chart frequency. Present your data to Fronius, and assuming that your grid frequency is actually within permissible range, push

Re: [RE-wrenches] Voltage Datalogger

Jason, Following up William's comment, here's an eGauge with battery voltage monitoring: http://egauge2093.egaug.es/ De-select all the register choices at the bottom of the graph except for Battery Voltage. The y-scale is in Watts but it's really V-DC; the folks at eGauge are working on that.

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

City of Palo Alto Utility (CPAU) in the Bay Area in CA does not install a new meter when PV systems are added to a house. Quote from section 8 of the 2010 CPAU PV Partners Handbookhttp://www.cityofpaloalto.org/civica/filebank/blobdload.asp?BlobID=14980 : 8.1 Electric Meter CPAU does not

Re: [RE-wrenches] Large, off grid

SMA Multi-Cluster Box, 3-phase up to 60kW using Sunny Islands http://www.grosolar.com/documents/doc_details/294-smacluster-spec-sheet.html On Fri, Aug 12, 2011 at 8:42 AM, penobscotso...@midmaine.com wrote: Hello wrenches, We have an opportunity to install a very large (60 kw) off grid

Re: [RE-wrenches] Fronius IG vs IG Plus inverters

I replaced the IG at my house 5 times under warranty (the circuit board failure that William described, no fires just some internal melting) before finally getting them to give me an IG+, which has been working flawlessly now for almost 2 years. As a company we replaced all of the IGs we

Re: [RE-wrenches] sizing a sub-panel used tocombinemultipleinverter outputs

To echo the wording in Kent's response, John Wiles has always advised that it doesn't matter if there are currently loads connected to the panel/conductors; if the panel/conductors are capable of having additional loads connected to it, you need to apply 609.64(B)(2). I have had luck with AHJ

Re: [RE-wrenches] Generators?

August, SMA recently updated their SI firmware so it would better communicate with the electronic governors on Kohler generators. On two projects so far, this new firmware has proven not to work on Generac generators (now with their own electronic governors, even the small air-cooled units),

Re: [RE-wrenches] Data System Puzzle

Vince, I had a similar experience a couple years ago with a Fat Spaniel string monitoring box w/ Hall Effect sensors, on MODBUS comm, etc. The folks at FS couldn't help at all, and like you I spent countless hours on the phone with the technicians to no avail. Then I found out that their boxes

Re: [RE-wrenches] NEC 690.74

, 2010 at 10:40 PM, Philip Boutelle philboute...@gmail.comwrote: Phil- Thanks for the clarification; the dual listing makes sense, and I should have been more clear with my original wording to cover such dual ratings. I'll be back on-site on Wednesday, at which point I'll notate exactly what

[RE-wrenches] NEC 690.74

Wrenches, We have a string of batteries being inspected by a local AHJ. In plan-check comments, I was asked to ensure that the flexible cable was UL-listed, so we made sure of this when it came from the suppliers. We used 4/0 RHW-2. Now our inspector is asking if RHW-2 is fine-stranded in Article

Re: [RE-wrenches] NEC 690.74

: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Philip Boutelle *Sent:* Monday, November 29, 2010 8:08 PM *To:* RE-wrenches *Subject:* [RE-wrenches] NEC 690.74 Wrenches, We have a string of batteries being inspected by a local AHJ. In plan-check comments, I was asked to ensure

Re: [RE-wrenches] NEC 690.74

On Nov 29, 2010 7:41 PM, Philip Boutelle philboute...@gmail.com wrote: Found the thread, very helpful thanks Glenn. The current parallel discussion on Battery Cables REvisited is helpful too. The inspector (She, btw) is extremely thorough. Although she has asked for proof of purpose

Re: [RE-wrenches] Internet-based monitoring

Joel, I have installed a few more eGuage units since I last posted about them. Each time, the end-user has been totally satisfied with what they ended up with. I haven't installed these in any commercial systems, but have them in several massive residential jobs (400-800A services). eGauge has an

Re: [RE-wrenches] Fat Spaniel

Jeff, If you don't need inverter-direct monitoring, you can use any CT-based 3rd party system (eGauge, Fat Spaniel, Energy Recommerce, Deck, etc all offer these, many charge for web-based hosting). If you want it to connect directly (useful for getting alert emails if one inverter goes down), you

Re: [RE-wrenches] backfeeding six disconnect panel

Dana, I'll echo Scott's earlier comment: connecting to an empty 'main' breaker position that is on the top bus will be a supply-side connection. From Code Corner #126: * * *Some dwellings have main-lug-only panels. There is no * *single main breaker feeding the panel, but up to six main *

Re: [RE-wrenches] Supply side connection to a dedicated panel

Dave, I think you are reading the output current for 277V. The spec sheet lists AC max output at 240V as 7700W and 32A. If you take that number at face value, you can still just use a 40A breaker. If you do the math based on their listed output (7700W/240V=32.1A * 1.25 = 40.1A), you might need

Re: [RE-wrenches] Tight roof layout questions: edge walkway requirements small gap hardware options

Just to clarify what is and isn't law in California: the final draft guidelines developed and adopted by Cal Firehttp://osfm.fire.ca.gov/pdf/reports/solarphotovoltaicguideline.pdfare guidelines, not law, unless the local fire/AHJ has adopted them or parts of them into local ordinances. I have

[RE-wrenches] 200A ATS with Sunny Islands

Does anyone have a recommendation on a 200A ATS to use with a Sunny Island system? I prefer a switch without an internal PCB, so modifying the switching logic with relays etc is easier, but if someone knows a switch that worked out of the box I'd love to hear about it. Thanks, Phil Boutelle

Re: [RE-wrenches] Advice needed on upsizing a battery grid interactive inverter stack

Hi Mick- Regarding the Sunny Island system: you can stack four SI5048U's in a split phase configuration. Install with an AC1 combining subpanel and an AC2 combining subpanel, so your backup load center isn't fed directly on one leg by one inverter--if you lose an inverter, you just lose

Re: [RE-wrenches] attaching to roof decking - Foam Insulation Install

for this specifically). -Phil Phil Boutelle Project Engineer NABCEP Certified Solar PV Installer TM Real Goods Solar, Inc. www.RealGoodsSolar.com http://www.iesolar.com/ On Tue, Jul 20, 2010 at 12:38 AM, Philip Boutelle philboute...@gmail.comwrote: I have an ancient (1999) spec sheet from

Re: [RE-wrenches] LIGHT GAUGE IS NOT CURRENTLY AVAILABLE

Dana, It looks like the LightGauge is available only to their customers, similar to how we at Real Goods only offer our in-house monitoring system, PVWatch, to our customers. However, the LightGague is really a re-branded eGauge, and you can get an eGauge with all the same functionality as the

Re: [RE-wrenches] Production and Consumption monitoring?

August, eGauge monitors both, and the differential accounted for. www.eGauge.net -Phil Real Goods Solar On Tue, Jun 22, 2010 at 8:37 AM, August Goers aug...@luminalt.com wrote: Hi Wrenches - Are any of you familiar with a monitoring product that monitors both solar production and

Re: [RE-wrenches] Production and Consumption monitoring?

Mick, The lightgauge is an eGauge with private labeling to match the installer, Lighthouse Solar. -Phil Real Goods Solar On Tue, Jun 22, 2010 at 11:40 AM, Mick Abraham m...@abrahamsolar.comwrote: August, here's one for you to check out: http://lighthousesolar.com/lightgauge/lightgauge.php

Re: [RE-wrenches] Supply side tap not allowed

Jeff, I'm guessing that the document your AHJ saw or is referring to is here, and might help you prepare for the meeting with the AHJ: http://www.ul.com/global/documents/corporate/aboutul/publications/newsletters/electricalconnections/april10.pdf I got wind of this document from John Wiles, and

Re: [RE-wrenches] Unshaded micro-inverter performance

Darryl, I have a handful of eGauges installed in the field, including one at my house (eGauge68 http://egauge68.d.egauge.net/). I can't speak on comparison to TED, I haven't used it. Today I learned that you can use eGauge with Google Power Meter, where Google imports the data and acts as the

Re: [RE-wrenches] low cost DAS systems

eGauge is not revenue grade, but could cover your requirements (1), (2), and (2). The proprietor David Mosberger-Tang (dav...@egauge.net) is pretty savvy with programming too, and he might be amenable to adding a programmable alarm, since it is just software. Depending on how many loads you need