[RE-wrenches] useful info on wire color coding

_ From: Mark Frye [mailto:ma...@berkeleysolar.com] Sent: Sunday, August 22, 2010 6:58 AM To: 'RE-wrenches' Subject: RE: [RE-wrenches] useful info on wire color coding Too lazy to look myself, but maybe one of you guys with an electronic version of the Code can search

Re: [RE-wrenches] RETURN AMP SETTING

Steve, Just to make sure I am not missing something, there is no way to directly set Outback equipment for a particular return amp rate. Rather one must observe the charge cycle and set the absorption timer accordingly. Do have that right? Thanks, Mark Frye Berkeley Solar Electric Systems

[RE-wrenches] Imbalance In Multiple String Charging Current

? Or is there a single bad cell with high impedance in this string? Both, neither, something else, or can't know without further information? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] Imbalance In Multiple String Charging Current

OK, So no takers for the low current string being in a healthier, higher state of charge! 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] Propane Generator, Dual Outback Inverters

foothills location. What exactly do you mean by harsh environment? 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

Re: [RE-wrenches] Propane Generator, Dual Outback Inverters

the batteries up through the absorption phase, once the gen is shut off. I would be interest to learn more about your approach to this. Thanks, 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] Outback Charging Method

Jay, I took your advice on removing the foam and vents and it did make a significant difference in the available charging power. Thanks for the tip. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http://www.berkeleysolar.com

[RE-wrenches] Pentametric as gen controller

Is anyone using the Pentametric to provide SOC gen control in lieu of the Outback AGS (w/o FlexNet DC)? If so, how is it working? Any success/disaster stories? Thanks, Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

[RE-wrenches] Two batteries with an MX60 in between (was big bank)

of three strings, and the output to the off-line sting, and let the MX keep the off-line string in float? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com ___ List sponsored by Home Power

Re: [RE-wrenches] For Big Bank Off Grid System Connoisseurs

What is the best way to measure cell temp in the situation you describe? 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

Re: [RE-wrenches] For Big Bank Off Grid System Connoisseurs

In this case the 4 individual banks are connected to a common buss. All four buss-to-bank cable sets are of identical lenght. 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] For Big Bank Off Grid System Connoisseurs

sometime. When a major capital component needs to be replaced they can make the best choice at that time. I like a lot of the other ideas that have come up such as more ventilation, both of the room and the inverters. Please any more thoughts you may have. Mark Frye Berkeley Solar Electric

[RE-wrenches] Outback Charging Method

current a constant maximum all the way up to the absorption set point. So if I don't see this, I am looking for a problem somewhere. Not so according to technical support. Any thoughts? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024

Re: [RE-wrenches] Outback Charging Method

levels so I suppose it is possible that entire chargers are being dropped, but I thought that was only for managing the on/search mode on larger stacks. I am guessing that this is more a matter of reporting errors in the mate. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City

Re: [RE-wrenches] Outback Charging Method

The inverters are mounted in a vertical orientation. 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-wrenches] For Big Bank Off Grid System Connoisseurs

parameters to match the seasonal condition including tacking on as much absorption time as feasible. So what to do with all those extra batteries? Can I cut them all out into the individual cells, drain the acid and keep them in storage, available to replace bad cells in the future? Any advice? Mark

[RE-wrenches] How many Ahs?

. And at the time that I complete this bulk charge, the battery bank will be restored to 1320/1690 = 78% of its starting capacity. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] electrical permit requirements

in whiskey or cigars. Still I like to think that the most important thing is to do good clean work and you'll have not problems with the inspectors. Getting past the permit counter is another matter. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401

Re: [RE-wrenches] Rennsteig Crimper Tool

requirements for the sack of a few hundred bucks peals off the vanier of emerging maturity and reveals the underlying backwards-ness inherent in the PV industry... Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http://www.berkeleysolar.com

Re: [RE-wrenches] dual stacked inverters on 208V service

I guess it would be both. The slaves sees 208V line-line not 240V, and the phase angle is 120 deg not 180 deg. 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

[RE-wrenches] Off-Grid Sizing Case

controller to get to a PV based system with gen support 2 - Get a 3K to 5K propane gen and and run as a gen based system with PV support 3 -? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] SWR2500U Inverter

Does anyone know about what it will cost me to have an out of warranty U series inverter refurbished? By whom? 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

Re: [RE-wrenches] Grounding detached buildings

Try 250.32. In this case, you consider that the panels at the home are not actually new service enterance equipment. The service is up at the shed and the home is part of two or more buildings supplied from a common service. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada

Re: [RE-wrenches] Enphase installation details

William, What do you think about the reliability of the Tyco AC connectors used in the Enphase system? 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

Re: [RE-wrenches] Enphase track record

the life cycle testing of the inverter, but in this case it all comes back to a connector to connector connection. So a real question becomes, how will the Tyco connectors hold up over time in real world applications. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959

Re: [RE-wrenches] Enphase track record

I have had 40 enphase 190s on a roof with sweeping shade for 4 months now. I had no DOA units and no unit failures to date. They are part of a standard Pro Solar rack. That is about all I can say. The customer is very happy. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada

Re: [RE-wrenches] Great service at the wholesale level?

Take it somewhere else. 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

Re: [RE-wrenches] Rooftop wiring methods between multiple subarrays

, I don't nessecarily need to bond the EMT as if it were part of a service. 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

Re: [RE-wrenches] 30 kW Inverters

we have to split the AC output into two separate services. How can this be done with a single inverter? 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

Re: [RE-wrenches] down-sizing main breaker

See Article 220 for load calculation and resulting breaker sizing requirments. 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

Re: [RE-wrenches] Efficiency Curves of Fronius Inverters?

Jeff, Here is what they submitted to the California Energy Commision: http://www.gosolarcalifornia.ca.gov/equipment/inverter_tests/summaries/Froni us%20IG%204000.pdf Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http

Re: [RE-wrenches] fronius IG Plus practical engineering WAA???

per pole or 11.5A Isc per pole. Depending on the modules used, this may or may not preclude doubling up strings on individual poles. 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] fronius IG Plus practical engineering WAA???(Mark Frye)

http://millersolar.com/resources/SQDHU361Bulletin.pdf Greg, You can get it from William Miller's site. 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

Re: [RE-wrenches] Solar Magic

My guess: Each unit is a DC to DC converter with a controllable 1:10 boost to the output side; module side has a MPP tracker; inverter side outputs are parralleled and adjust to a single common voltage. The string inverter sees a constant DC voltage of 200-300 depending on the module Vmp. Mark

Re: [RE-wrenches] Enphase Recall?

, going from 2 weeks to 12 weeks leadtime in 2 weeks is no way to manage customer expectation. In my mind it's a black eye for Enphase. I am hoping that they will win a feather back into their cap with an on time delivery of a stellar product. Mark Frye Berkeley Solar Electric Systems 303

Re: [RE-wrenches] FW: 690.47D (revisited)

/DC systems to the DC GEC and that this wire need only be sized to the inverter PV AC backfeed breaker. This same conductor also serves at the EGC for everything on up to the array. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] FW: 690.47D (revisited)

Rick, I don't see that applying to Kelly's question. He said that the AHJ is not requiring the separate array grounding in his case. The discussion has to do with the number and sizing of conductors run in various parts of the system in order to accomplish various grounding requirements. Mark

Re: [RE-wrenches] 690.47D (revisited)

6 ft) to the practiable location, then the ne DC array GEC must still be run directly to exist GE system which is now the AC/DC GE system. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com -Original Message- From: re

Re: [RE-wrenches] 690.47D (revisited)

the grounding electrode system. MPF 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 Kelly

Re: [RE-wrenches] 690.47D (revisited)

to respond with increasingly creative nterpretations. I am in California which is inspecting to CEC 2007 referring to NEC 2005. The next adoption cycle is 2010, so it will be a year before the California AJH's have NEC 2008 officially on their desks. Mark Frye Berkeley Solar Electric Systems 303

Re: [RE-wrenches] 690.47D (revisited)

sell them to the AJH, if any. 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 Richard L

Re: [RE-wrenches] Santa Monica guidlines/ CEC

He may have been refering to the California Electric Code. 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

[RE-wrenches] Latch Locking

? Thanks, 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-wrenches.org Options settings: http://lists.re

Re: [RE-wrenches] Latch Locking

any of this matter? 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] Enphase Application

inverters. No experience needed. 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 Max

Re: [RE-wrenches] Enphase Application

Bob-O, It ain't that public, as in general public as in everybody here knows there are 15-20% markups to list. 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

Re: [RE-wrenches] Enphase Application

estimated at the time of sales. 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 Jason

Re: [RE-wrenches] BOSCH

much time it can save when it works. 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

Re: [RE-wrenches] Inverter with two strings of different orientation

with the Fronius White paper: one inverter, multiple strings, all modules in any given string with the same orientation. If you must, throw a number at the orientation loss, but how meaningful will it be in the overall picture? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City

Re: [RE-wrenches] SS zip ties

. Their data shows 12-15 year life expectancy. Most of these ties are actually protected from direct sunlight and weather, so I think they have a fighting chance in most environments. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] load side taps and NEC 240.21

120% allowance is only ..For a dwelling unit. Clearly this is a load side Point of Connection. If it is a dwelling unit then the 120% allowance is applicable. If it is not a dwelling unit, then there is no room to connect under NEC 2008. Mark Frye Berkeley Solar Electric Systems 303

Re: [RE-wrenches] load side taps and NEC 240.21

to the decretion of the AHJ. Still, if Jerry is going to rely on NEC 2008 to get the 120% for commercial, it still doesn't sound like he can meet it since I assume that the bolts he wants to use are not located on the opposite end of the buss from the main breaker. Mark Frye Berkeley Solar Electric Systems

[RE-wrenches] SDHW Anti-Scalding Valve

? If so, by what authority? If a solar heated storage tank (drain back) is installed ahead of the main storage tank, does that change the requirements? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com

Re: [RE-wrenches] DLO wires in PV systems

Mike, The RHH/RHW-2 do not cross to USE-2 because they do not have any rating for UV exposure. If these conductors are run outside of conduit on the array, you need USE-2 or PV conductor. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http

Re: [RE-wrenches] DLO wires in PV systems

Mike, If they are not in conduit (a raceway), then they are exposed. They may not be and must not be subject to physical damage (protected by the modules, etc.), but that does not mean they are not exposed and must have the USE-2 / PV rating. Mark Frye Berkeley Solar Electric Systems 303

Re: [RE-wrenches] CA CSI warranty interpretation

the CSI program. So what are the real legal obligations (if enforced) that apply to what? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http://www.berkeleysolar.com/ www.berkeleysolar.com _ From: [EMAIL PROTECTED] [mailto

Re: [RE-wrenches] Enphase inverters

in operation? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 http://www.berkeleysolar.com/ www.berkeleysolar.com _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Anderson Sent: Monday, November 10, 2008 1:17 PM

Re: [RE-wrenches] Request for Enphase inverter comments

. The question arises, what model for real maintenance costs over a 25 year term should be included in estimates for an Enphase system. Our industry is mature enough that we should expect this kind of information from all providers, old and new. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way

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