Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

ltage gets too high. Once the voltage drops the contactor can close and bring the Fronius back on line and then the 5-minute start up delay before it is feeding the line again. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berk

Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

the DC diversion side solution if you have someplace to put the power instead of just the batteries, although that might be generally less commonly available for retrofits into existing on-grid households. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401

Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

Hi Mark, Gary, The Xantrex XW series inverters will do a frequency shift to cause most models of grid-tied inverter to disconnect when the batteries are full, while the system is operating in an ac coupled off-grid mode. The following app-note describes this operation. Cheers, Mark http

Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

I see. Can this function be enabled/diabled? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenche

Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

Hi Mark, The point of operation can be adjusted above normal battery operating levels, which essentially disables the feature. Mark _ Mark Edmunds, P.Eng. | Schneider Electric | Renewable Energies

[RE-wrenches] Two Buildings, Two Services, One Roof

I have a customer who has two separate buildings, a home and a shop. Each dwelling has it's own service. He wants to put in two pv systems, one for each service, but wants all the PV modules to be on the shop roof. Why is mind going "clunk" when I try to deside if this is allowed

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

along my merry way? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] O

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

g the groundingstem of multiple seperately derived systems, but could we construe a utility service to one dwelling as a seperately derived system relative to another dwelling with it's own service? Where can one find the definition of a "seperately derived system" in the Code?

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

ed systems in this case because each building has it's own service and therefore cannot be considered as a seperately derived system. So where does the Code speak to this. My sense is that it is a big no-no, but can exactly explain why. Anyone else out there agree or disagree? Mark Frye

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

I have not yet visited the site to see, but I would guess that they are feed from the same transformer. If they were, how would that make it OK? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

one of the two. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

Or another way to illustrate this problem: There is nothing in the Code that would stop me from hauling out the old #6 and bonding my GEC to my next door neighbors GEC, if I wanted to? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <h

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

it. Otherwise it's onward and upward. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun.

Re: [RE-wrenches] Two Buildings, Two Services, One Roof

Folks, I did send the question to John Wiles and he was gracious enough to reply. Here is his response: "Mark: Better ask the utility involved. Probably depends if they are on a common transformer or not." Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City,

[RE-wrenches] FYI - John Wiles

hwest Technology Development Institute, New Mexico State University 575-646-6105 575-646-3841 (FAX) http://www.nmsu.edu/~tdi/Photovoltaics/Codes-Stds/Codes-Stds.html SWTDI/NMSU 3705 Research Drive Box 30001/MSC 3 SOLAR Las Cruces, NM 88003-8001" Mark Frye Berkeley Solar Electric Systems

[RE-wrenches] Commisioning AGM bats

Folks, I have a couple of new SunExtender AGM batteries that I will be using in a UPS application. My understanding is that I should cycle them before floating them out for standby service. Am I getting this right? How many cycles - to what DOD? Mark Frye Berkeley Solar Electric Systems 303

Re: [RE-wrenches] METAL ROOF ATTACHMENT

Generally, in order to develope the full tensil strength of the bolt, it should be engaged by a minimum of 5 threads. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _

Re: [RE-wrenches] Oatey and Standoff vs QuickmountPV Labor

..except..there wasn't any rubber there anymore...all rotted out. Back in the day I went for a custom rolled cone flashings that I could caulk into the post and slide a rubber counter-flashing over the whole thing. Overkillperhaps. Best of Luck. Mark Frye Berkeley Solar Electric Sy

[RE-wrenches] Enphase Inards - Any Guesses?

of these three is electrically identical and solidly connected inside the inverter. But, I don't know. The folks at Enphase tech support will not tell me whether or not this is true. Anyone out there have any ideas about this? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada

[RE-wrenches] Conergy Solar Linea

Any comments good or bad? Tips? Best regards, Mark Dickson, NABCEP Certified Solar PV Installer T Oasis Montana Inc. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http:/

Re: [RE-wrenches] AC Coupling Xantrex XW Inverters to EnphaseMicroinverters

nd upfront. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of

Re: [RE-wrenches] Working on metal roofs.

Bob, I think you are talking about Cougar Paws: http://www.cougarpaws.com/ I love them and buy a pair for anyone who works for me. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysol

Re: [RE-wrenches] Tigo to go?

How closely have you looked at this? It looks like the Tigo is already about 1/4 the cost of an Enphase. So how close are you to moving from an optimizer / inverter combination to a microinverter? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024

[RE-wrenches] SolarEdge v Enphase

, with high voltage (over 250V) DC wiring, and doubling DC connector count. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com ___ List sponsored by Home Power magazine List Address: RE

[RE-wrenches] Warranty Claim Based On Enphase Monitoring Data

total system yield….0.0013%. I am not complaining, just musing over this interesting evolution. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com ___ List sponsored by Home Power magazine

Re: [RE-wrenches] Warranty Claim Based On Enphase Monitoring Data

Thanks Phil, I have already swapped the module to confim that the problem follows the module, not the inverter. I am currently working within channels with my distributor for warranty replacement having just requested an RMA. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada

Re: [RE-wrenches] SolarEdge v Enphase

ure is inherent in microinverters as well. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun

Re: [RE-wrenches] 3,200AH Battery Bank?

The question is not well addressed without knowing the nominal dc system voltage. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@li

Re: [RE-wrenches] smart meters/bidirectional

dics meters. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of jay peltz Sent: Monday, Jun

Re: [RE-wrenches] Enphase Nema 6 enclosure - not

Was that an M190? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On

Re: [RE-wrenches] Enphase Nema 6 enclosure - not

ssing the internal face gasket. I really haven't looked into it much further but I wonder if the water you observed entered through an incomplete connector mate, along the conductors, into the inverter enclosure? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 9

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

Multiple power stages in the Plus make for a more efficient inverter at lower solar outputs. Just installed six of the 11.4s and went really smoothly. Love the modular disconnects which the inverter literally plugs/drops into. Best regards, Mark Dickson, NABCEP Certified Solar PV

[RE-wrenches] AUTO: Mark Edmunds is currenlty out of the office. (returning 07/04/2011)

I am out of the office until 07/04/2011. I am traveling and will have no access to e-mail, please contact Sandra Steffan (sandra.stef...@schneider-electric.com) for immediate assistance if required. Note: This is an automated response to your message "Re: [RE-wrenches] Sealed L-16 size batter

Re: [RE-wrenches] Efficient step up, down transformers

f not, it is possible that the coil taps are connected in a manner that is not efficient. That being said, 15.6 A @ 120V sound like an awefully large number. Perhaps you have a bad connection at one of your pull boxes. I would be happy to stop by and take a look at the xfrm spec etc. with you.

[RE-wrenches] Out of Warranty Inverter Replacements

customers: - Buy the refurbished units w/ 1 year warranty - Buy new replacement units with 10 or 20 year warrranties - Buy entirely new equipment such as Enphase or SolarEdge What are other folks experiencing as we move well past the 5 year warranty horizon for many of our earlier customers? Mark Frye

Re: [RE-wrenches] Out of Warranty Inverter Replacements

"Good" based on their online configuration tool, and also well in line the the SMA white paper of many years ago suggesting a 120% mod/inv ratio as optimal. And yet, the first unit failed in 4 years and the refurb failed in 2 year. Mark Frye Berkeley Solar Electric Systems 303 Redbud W

Re: [RE-wrenches] Out of Warranty Inverter Replacements

, 75%? Would I have avoided most of my inverter failures if I had? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mai

[RE-wrenches] PG&E Interconnection Agreement Equipment Changes

Folks, Has anyone talked with PG&E about needing (or not needing) a new Interconnection Agreement when changing out inverter make and model without increasing the size of the PV generator (number of modules) on a system that is already interconnected? Mark Frye Berkeley Solar Electric Sys

Re: [RE-wrenches] AC Coupling

be either a diversi9on load or a contactor that disconnects the grid tied inverters all together. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenche

Re: [RE-wrenches] 690.31(B) "within the photovoltaic array"

tting from Lumeta around this? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenche

Re: [RE-wrenches] Grounding Requirement Question

electrode shall be permitted to be used for both systems... Review this article and share it with your inspector in order to determine what is motivating him. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.

Re: [RE-wrenches] Sharp modules

er of the frame brings it into square and on we go. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wr

Re: [RE-wrenches] Adding on to existing PV System

breaker in the existing main panel. Move the existing 30A breaker into the new subpanel and install the new 15A breaker into the same. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysol

Re: [RE-wrenches] Adding on to existing PV System

d no additional circuits." I think this is a much better interpretation and method that preserves a clean and functional load side connection topology. I think most reasonable inspectors would agree as well. Good Luck. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City,

[RE-wrenches] Sharp 62W Modules

and maybe a special cable from Sharp, as well. Mark Byington Cobalt Power Systems, Inc. ma...@cobaltpower.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-

Re: [RE-wrenches] Cummins DC generator

How would you integrate a dc generator like to Polar Power into a "standard" inverter/charge-battery-pv charge controller system? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.b

Re: [RE-wrenches] Cummins DC generator

I see. So there is a big difference between using the DC generator. With an AC unit I can run it into the inverter/charger and it will give me three stage charging. With the DC unit, I can really only us it to bulk charge. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City

[RE-wrenches] Storing Batteries

Can you store the acid dry for ten years? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenche

Re: [RE-wrenches] under performing Enphase inverters

eimbursement of $150. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrench

Re: [RE-wrenches] Sizing 3 phase OCPD - main

Rebekah, If you knew only the power and voltage, then you would use the root of 3 to determine the amps. But since you know the amps, you don't need to use the root. The second equation would be the correct one. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City

Re: [RE-wrenches] intermittent battery problem; ...Battery Sulfation

Todd, I thought you were totally off-grid. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenche

[RE-wrenches] Recycling failed modules

Allan, Try www.pvrecycling.com Haven't used them myself, so can't address cost or other questions. Mark Byington Cobalt Power Systems, Inc. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wr

[RE-wrenches] Enpase 210 and LA County

rs? I am hoping that by taking in the CEC list and perhaps talking with a different permitting clerk, he will find that the first person was simply uninformed. Have any of you run up against this? Was there a way around it? Best regards, Mark Dickson, NABCEP Certified Solar PV Installer T

Re: [RE-wrenches] blue planet batteries

Looking at the info on-line, it does seem like you are going to need significantly more foot print for higher capacity systems. But had to laugh when I saw the note, "Ideal for Eco-Mansions". Hadn't heard that one before. On 1/4/2018 10:35 AM, jay wrote: While we are talking about batteries,

Re: [RE-wrenches] TJI rafters

If you can take multiple 1/4" lags, you can consider the Hollaender Speed Rail square flange. I have used this to built steel pipe rack, then attaching solar rail to the pipe with u-bolts. On 3/3/2018 12:45 PM, Ray wrote: I can see that the TJI manu doesn't want us blowing 3/8" lags through

[RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

he DC disconnect to the exemption from rapid shutdown, right? Mark Frye ___ 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-wr

Re: [RE-wrenches] Location of DC disconnect vis-a-vis rapid shutdown exemption

what might need to be "Outside readily accessible". Is there something other than 690.12 that I need to look at? Mark On 4/15/2018 8:26 PM, Darryl Thayer wrote: I think the code says Outside readily accessible, On Sun, Apr 15, 2018 at 12:22 PM, Mark Frye <mailto:ma...@berkeleysola

[RE-wrenches] Conduit Across "Walkway"

Folks, I have a 3 foot "walkway" on a roof pitch and between two separate arrays, as required. Is there anything that prevents me from running a conduit between the two arrays, across the "walkway"? Thanks, Mark Frye _

Re: [RE-wrenches] Conduit Across "Walkway"

Thanks Brian, I would read this as saying that I CAN run a conduit across the walkway since it would be only a "minimal obstruction". MarK On 4/19/2018 8:34 AM, Brian Mehalic wrote: Mark- The 2018 IFC and IRC both state "Pathways shall be located in areas with minimal obs

[RE-wrenches] Disappearing Thread

Could have sworn there was a thread here about melted batteries, but it not showing in my email client anymore. ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://

Re: [RE-wrenches] Silly off grid

Please let the list know when you get your first request for off-grid Bitcoin mining.  :-) On 7/24/2018 11:57 AM, Ray wrote: Oh boy, do I get a bunch of calls for folks wanting to take a 24/7 grow operation off grid.  Dana nailed it: Green house. Even with LED grow lights the numbers are ju

Re: [RE-wrenches] Altitude and controllers

Higher altitude equals lower air density equals lower capacity for heat transfer to atmosphere equals more heat build up inside equipment. On 8/20/2018 10:18 AM, ch...@oasismontana.com wrote: Hi Folks: What is the deal with altitude restrictions on charge controllers and other solid state c

[RE-wrenches] Generator for DC Coupled System

Folks, Has anyone had the chance to work with the Polar Power DC generators such as https://www.polarpower.com/wp-content/uploads/8220K-972_0115.pdf ? Anyone aware of good alternatives? Thanks, Mark Frye ___ List sponsored by Redwood Alliance

Re: [RE-wrenches] Enphase and Tesla Powerwall

Uh, Looking at what is happening with Tesla's share price, I am not sure I would want to be "investing" in the products of the neglected solar division. With Elon alone at the wheel , the Powerwall et. al. might go the way of the Dodo before too long. I have been working lately with folks who

Re: [RE-wrenches] 120/240 to 3 phase 120/208

Years ago I used something called a RotoPhase Phase Converter to supply some 3ph equipment on a site that only had 1ph (2ph?). Not efficient. On 8/6/2019 6:30 PM, Jay wrote: Hi all Is there a way to convert a 120/240v generator to a 120/208 3 phase output? Thx Jay ___

Re: [RE-wrenches] 30 amp disconnect/40 amp breaker

high load/over load conditions which are not relevant to the situation we are talking about. Another way of saying this, which would be more sensible is: yes, evaluate the circuit in both directions, but only consider the load to be continuous in the direction from the inverter to the grid. Mar

[RE-wrenches] Amphenol Connectors

Speaking of Tesla... What with Walmart and (Amazon?) suing them for PV fires... Can anyone here give a brief run down on the whole Amphenol UTX (?) defective or cross-mated connector story? Thanks, Mark Frye ___ List sponsored by Redwood

[RE-wrenches] Recycling of LI vs Pb

future? This is why I ask about the recyclablility / sustainability of Li batteries? Some what agnostic here but wondering what the thinking around this is? Thanks, Mark Frye ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re

[RE-wrenches] Parts List For AC Couple Disconnect

voltage and latch a coil on when it raises above a set point (250VAC). I then want a timer to release the latch after about 1 hour. Sound about right? Are any vendors selling such a device? How about a parts list from Digikey? Thanks, Mark Frye

[RE-wrenches] Parts List : Reprise

Folks, I guess what I am asking is does anyone know of a cheaper way of implementing than: Digikey, Relay Monitor Voltage, 646-1145-ND, $117 each, Qty. 1 Digikey, On-Delay Timer, RTE-P1AF20, $49 each, Qty. 1 Digikey, Relay Socket, 27E891, $7 each, Qty. 2 Total = ~ $200 Thanks, Mark Frye

Re: [RE-wrenches] Parts List For AC Couple Disconnect

Glenn, OK, while I would prefer to not get into compiling code onto an ARM, my main question would be, how do you get the voltage value into the Arduino? Rectify the AC voltage and then voltage divide down to the chip input pin? Mark On 11/2/2019 10:14 AM, Glenn Burt wrote: Sounds like a

Re: [RE-wrenches] Parts List For AC Couple Disconnect

vercharged, but rather to prevent the AC line from becoming unstable? I am hoping this is correct and that with $200 of industrial grade devices from Digikey I can implement a robust control that will disconnect the GT inverters before the AC line goes so high that the BB inverter

Re: [RE-wrenches] Parts List For AC Couple Disconnect

coming back on line after tipping off. Mark On 11/3/2019 9:53 AM, Brian Mehalic wrote: With frequency-on/off, frequency power control, or other “inverter integrated” control based on battery voltage/state of charge there is also control in regards to when the ac coupled inverters come back on

Re: [RE-wrenches] Parts List For AC Couple Disconnect

ll, this is why I am asking. Anyone on the list have more confidence in their understand of BB inverters in off-grid mode with AC coupled GT inverters? Mark On 11/3/2019 10:44 AM, Kienan Maxfield wrote: Mark, I think that you're not understanding what Brian is saying. In any case, yo

Re: [RE-wrenches] Parts List For AC Couple Disconnect

ed to endlessly push available energy into the batteries. You can turn off the switch that connects the charger to the battery. Mark On 11/3/2019 11:13 AM, Kienan Maxfield wrote: Mark, Sorry, my post must not have been perfectly clear... I have total confidence in how the BB inverters work

Re: [RE-wrenches] Parts List For AC Couple Disconnect

does this end, when the batteries blow up? Is that the consequence of not disconnecting the GT? With many thanks in advance for your help in understanding. Mark ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org

Re: [RE-wrenches] Parts List For AC Couple Disconnect

sti.net text 209 813 0060 On Sun, 3 Nov 2019 16:17:39 -0800, Mark Frye wrote: Folks, Please allow me to ask another question: Suppose I have a bi-direction inverter/charge with no connection to the grid. I have GT inverter ac coupled and producing 2000w. The battery is in float, and I have 200

[RE-wrenches] hueRe: Parts List For AC Couple Disconnect

Happy Hour, yes it is that time here in our home. Thanks again, but I guess I don't see that there is a catastrophic result here, the BB raises the frequency and trips the GT. So what, as long as the BB returns to a standby. On 11/3/2019 4:31 PM, Mark Frye wrote: OK, I am hearing this

Re: [RE-wrenches] hueRe: Parts List For AC Couple Disconnect

cture. That most commonly is ensured with an interposing relay controlled by the BB inverters knowledge of the battery charge, or a secondary device that performs the measurement. -Glenn Sent from my 'smart'phone, so please excuse typos and spelling errors. -- Original message

Re: [RE-wrenches] Parts List For AC Couple Disconnect

have no communication with a Rule 21 GT inverter. The BB, it will just keep charging and charging with any extra energy coming from the GT inverter. The BB has no regulation, there is no absorb or float, just charge. jay peltz power On Nov 3, 2019, at 4:31 PM, Mark Frye wrote: OK, I am

Re: [RE-wrenches] Parts List For AC Couple Disconnect

6:10 AM, Bradley Bassett wrote: Mark, The difference is that when AC coupled the power is coming backwards into the AC out. When it's charging from the grid or generator it is charging from the AC inputs. The inverter can control the charge from the inputs but not what is coming in re

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

Most every industrial grade tracker run off of location and time, calculates the required array angle. The core code for this is open source out of NREL (your tax dollars at work). Still over my pay grade to actually integrate this into a home made tracker. On 12/2/2019 6:28 AM, Mac Lewis wrot

[RE-wrenches] Watch Out For Third party Tesla Modules - no warranty

I received a sales email for some of these recently. https://www.pv-tech.org/news/panasonic-warns-us-solar-installers-of-tesla-designated-panels-on-the-marke ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Cha

Re: [RE-wrenches] Watch Out For Third party Tesla Modules - no warranty

I spoke with the vendor who sent me the email and she confirmed that the modules are not warranted by Panasonic, but rather by Tesla with slightly different terms, so all is well, buyer beware. On 1/10/2020 6:46 AM, Mark Frye wrote: I received a sales email for some of these recently

[RE-wrenches] OK, so what iwould happen if I do this...

five minutes. Voila, I can run house loads from 0 to 2kw with my existing GT PV with the balance of energy dumped as needed to the immersion heater. Right? Mark Frye ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re

[RE-wrenches] How much Li battery?

In the way back machine I remember being at a product roll out meeting for the brand new Outback FX inverter. I asked the engineer, what was the smallest battery bank that could be connected to the inverter. He said on the fly that probably you would want the battery to "weight" at least as muc

Re: [RE-wrenches] How much Li battery?

Humm, so maybe a 3kwhr would work for my situation. On 5/23/2020 10:55 AM, Jerry Shafer wrote: Mark The smallest battery I have used is the Blue Planet 8 kWhr. its a half stack in there cabinet with a 10.8 k PS-3 inverter system with about 6 k on the roof, 8 K is not much but this particular

[RE-wrenches] Split Phase Load Rating

hanks, Mark ___ 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://www.mail-archi

Re: [RE-wrenches] Split Phase Load Rating

et text 209 813 0060 On Mon, 25 May 2020 14:08:03 -0700, Mark Frye wrote: Folks, Back again into the way back machine, I once installed a system with multiply FX's stacked in a split-phase configuration. At the advice of the engineer, I also installed an auto-transformer across the line

Re: [RE-wrenches] How much Li battery?

mean its right. Ray Walters Remote Solar 303 505-8760 On 5/23/20 5:48 PM, Mick Abraham wrote: Greetings, All~ Mark Frye had asked:  "...with a

Re: [RE-wrenches] How much Li battery?

/2020 10:47 AM, la...@starlightsolar.com wrote: Hi Mark, One of the many benefits of Li-ion is the ability to provide much higher continuous current than any comparable size LA battery. You don’t need more than 2kWh (40Ah) and want to know the smallest battery you can use. To directly answer

[RE-wrenches] Goal of charge regulation FLA vs LiFePo

different for a LiFePo? I am pretty sure it is much easier to damage a Li with bad charging, but why? Thanks, Mark ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings:

[RE-wrenches] Magnum Frequency Shift

.5 Hz (in 0.3 volt increments) This is from my notes from a tech support call, but I am wondering if I have it mixed up. Protecting at 6 volts above the Absorb seems a bit high. Thanks, Mark ___ List sponsored by Redwood Alliance List Address: R

Re: [RE-wrenches] Magnum Frequency Shift

this feature as a backup to an AC dump load controller set to maintain Float voltage. On 6/12/2020 7:12 AM, Jay wrote: Hi Mark I found this which might be of help. https://www.magnum-dimensions.com/sites/default/files/MagArchive/AN-0002-AC-Coupling-Rev-5-10.pdf Jay Peltz power. On Jun 12, 202

Re: [RE-wrenches] Magnum Frequency Shift

Hello, I have a small array of 8 - SMA SB240 microinverters on the roof. Peak power out of the array has never exceeded 1800 W. I am adding a Magnum MS-PAE 4448 with a 315 AH flooded Lead Calcium battery bank. Cheers On 6/12/2020 12:31 PM, Chris Schaefer wrote: G'Day Mark, Which

Re: [RE-wrenches] Magnum Frequency Shift

d to an XW+5548. They are very solid performers. Brad AEE Solar On Fri, Jun 12, 2020 at 3:39 PM Mark Frye <mailto:ma...@berkeleysolar.com>> wrote: Hello, I have a small array of 8 - SMA SB240 microinverters on the roof. Peak power out of the array has never exceede

Re: [RE-wrenches] Magnum Frequency Shift

coupled array feeding the system. Brad On Fri, Jun 12, 2020 at 4:34 PM Mark Frye <mailto:ma...@berkeleysolar.com>> wrote: Yes an elite group within an elite group. So the SB240 does not have frequency shift /wattage control. How are you implementing charge control in stand a

Re: [RE-wrenches] Magnum Frequency Shift

On. On 6/12/2020 7:27 PM, Jay wrote: Hi Mark Is this off grid or on? Jay On Jun 12, 2020, at 7:09 PM, Mark Frye wrote:  I see. What you say about the frequency shift being slow makes me again doubt the value of even using it in my application. I have a controller that can regulate

Re: [RE-wrenches] Magnum Frequency Shift

Jay, Do you use an NO or NC solid state relay? Mark On 6/13/2020 7:46 AM, Jay wrote: Hi Mark, Then the relay method is easy and reliable to use. Relay trips at whatever battery voltage you don’t want to exceed. I use a solid state relay with a good heat sink, only switching one leg. Jay

Re: [RE-wrenches] SPAN - Smart home electrical panel....

Built in auto transformer. On 6/15/2020 8:15 PM, Jim Duncan wrote: Anyone looking at these, yet? 32 Circuit Breaker Panel with (if looks like) individual (relay?) control on each circuit and CT Monitoring? I suppose Arc Fault Trip and GFI are built in? https://solarbuildermag.com/energy-storage

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