Re: [RE-wrenches] Off-grid refrigerator

2018-09-08 Thread Bob-O Schultze
Assuming you have a sinewave inverter t this point, I agree with Jerry about going to a 120vac fridge. However, I would suggest going to your computer before the appliance store. For Kathleen and I, Energy Star rated is the starting point. There is some really good info here: https://library.cee

Re: [RE-wrenches] Chevy Bolt

2018-04-24 Thread Bob-O Schultze
Krikey! Can we all please stop using the term “modified sine wave”? It’s just marketing BS and y’all know it. Anyone who has looked at that waveform on an oscilloscope can plaining see that it is a modified square wave. When we use the BS marketing term we are lying to our clients and to ourselv

Re: [RE-wrenches] Ibew is working to exclude C-46 contractor’s from installing Batteries.

2018-04-13 Thread Bob-O Schultze
William, NABCEP writes no state laws, makes no regulations or policies. As such, the only “teeth” it has is to revoke or suspend the Certification of a bad actor. Some states have recognized the value of a NABCEP Certification and tied it to their solar incentive programs in some way, but not al

Re: [RE-wrenches] Ibew is working to exclude C-46 contractor’s from installing Batteries.

2018-03-24 Thread Bob-O Schultze
It’s totally a California issue. On Mar 23, 2018, at 8:51 PM, Solar wrote: I’ve never heard of C-10 or C-46. A quick google search seems to point to it only being a CA thing. Nothing like this happening in MN. Jesse Dahl NABCEP PV Installation Professional IBEW Local 292 - Electrician Elec

Re: [RE-wrenches] Ibew is working to exclude C-46 contractor’s from installing Batteries.

2018-03-23 Thread Bob-O Schultze
and easy path for experienced C-46 workers to upgrade to a C-10 with additional testing. Then, the C-46 should revert to solar thermal again. My two cents. Bob-O Schultze On Mar 23, 2018, at 6:02 PM, Jason Andrade wrote: Hi at this point I believe this is a California only issue, but I was

Re: [RE-wrenches] Fuses

2018-03-19 Thread Bob-O Schultze
I have replaced a few paper fuses over the years in outside boxes which appear to have failed due to moisture as there was no other faults. On Mar 18, 2018, at 10:39 AM, Jay wrote: Hi Jerry, Curious what amp rating the fuses are and what the ISC rating of the modules are. Thx Jay Peltz powe

Re: [RE-wrenches] Apprentice interview

2015-04-28 Thread Bob-O Schultze
An apprenticeship is the original 4 year degree. If the trainers are good, high quality workpersons, and the apprentice WANTS to learn, the apprentice will learn the trade. It's exactly the same in a college situation except that the newly minted journeyman, unlike a college graduate, will actua

Re: [RE-wrenches] RE; SW4024's were off grid, now on grid AC2 Controls?

2014-12-15 Thread Bob-O Schultze
Ray has it right but if he DOES try to sell back, make sure is electric meter is the old disc type. and not de-tented. You can tell if it is de-tented by observing it spin backwards on a sunny day. A de-tented meter will spin back just one revolution then a pawl releases and it spins back to whe

Re: [RE-wrenches] ITC for solar water pumping on a ranch

2014-10-30 Thread Bob-O Schultze
It's totally OK to apply for an offgrid Fed ITC. Some state (like OR) will even give you a State ITC for offgrid. However, I did have an offgrid client a few years back who's ITC was questioned. The IRS wanted to know if the PVs were for real (Mitsubishi just makes cars and TVs, right?) and want

Re: [RE-wrenches] Mounting height

2014-10-21 Thread Bob-O Schultze
If it has some sort of switch or CB, the top of the handle cannot be higher than 6'7". As to the lower limit, I think that would depend on the location. In a garage, for example, the AHJ could make a case for 18" as that's where outlets generally live, but there is no lower limit that I'm aware

Re: [RE-wrenches] Watsun problem

2014-09-22 Thread Bob-O Schultze
A small amount of dirt or (more probably, bird crap on the E sensor might do that. Also, try moving the limit switch to limit the E stop by just a tooth or two. If that works, it's probably because there is a bit of wear on the gearing which would be normal. Bob-O On Sep 22, 2014, at 5:27 PM, S

Re: [RE-wrenches] AFCI disturbances.

2014-06-25 Thread Bob-O Schultze
mount system it is legal to disable the AFCI protection. I will be troubleshooting this job tomorrow and I will let you all know what I learn. William Miller Lic 773985 millersolar.com 805-438-5600 -Original Message- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.or

Re: [RE-wrenches] AFCI disturbances.

2014-06-24 Thread Bob-O Schultze
Wire nuts on the DC side have been verboten in Oregon for over a decade. IMO, copper split bolts wrapped with insulating then regular tape are the way to go. Back in the days of 12V system and no series fusing, we used to use them all the time to combine PVs. I've gone into some of those systems

Re: [RE-wrenches] Timer for SQF pump

2014-06-23 Thread Bob-O Schultze
2nd all that. I would add that since you want all this to run array direct, you need to be VERY aware of the MAX voltage of both the relay and contacts that the switch can handle. If it's a summer only gig, you can probably go with Voc. On Jun 23, 2014, at 6:14 AM, Allan Sindelar wrote: Agree w

Re: [RE-wrenches] Lumos LSX250 modules

2014-06-20 Thread Bob-O Schultze
Ah to be young and immortal again. And not give a rat's ass about safety gear... On Jun 19, 2014, at 10:17 PM, Chris Worcester wrote: Hi Benn, I purchased a set of 4 years ago through a local glass company that does a lot of custom window installs, using these on some really big expensive Tahoe

Re: [RE-wrenches] 60 Cell & Small 12 V System

2014-06-19 Thread Bob-O Schultze
Look into the BZ Products MPPT 500. Bob-O On Jun 19, 2014, at 6:30 AM, Drake wrote: Hello Wrenches, A small town wants to put a kiosk in a park with a video display. It would be great to power this with a 60 cell, 255 W module and charge a 12 V battery. Morningstar has a product that would d

Re: [RE-wrenches] Small pump in larger casing

2014-05-09 Thread Bob-O Schultze
No problem with the smaller pump. Can't do it the other way 'round anyway! While there is no problem with using a torque arrestor, it just isn't necessary with an SQ Flex as the pump "soft" starts. Bob-O On May 9, 2014, at 7:14 AM, Mac Lewis wrote: Hello wrenches, Is there any problem to putti

Re: [RE-wrenches] high efficiency modules in U.S.

2014-04-25 Thread Bob-O Schultze
Try Mage? Bob-O On Apr 25, 2014, at 8:17 AM, Larry Crutcher, Starlight Solar Power Systems wrote: Hey Kirk, We have sold sanyo then Panasonic modules for over a decade. Not only were they highly efficient, they were the last truly high performance modules in the US. I have exhausted my sear

[RE-wrenches] Golf Cart Array

2014-04-11 Thread Bob-O Schultze
Esteemed and just steamed Fellows, I've rebuilt an old dead 36V golf cart and I'd like to put an array on it. The problem is that the roof area is only 40" x 65ish" and it's 36V. I'm OK with a bit of overhang the 65" dimension, but not side to side as it will be a head bumper getting in and out.

Re: [RE-wrenches] 72-cell modules

2014-02-15 Thread Bob-O Schultze
MAge has a 190W 72 cell mono. On Jan 30, 2014, at 8:37 PM, Allan Sindelar wrote: Wrenches, About a year ago I asked for suggestions of 72-cell modules with 125 mm cells - the standard 155-195W modules of just a few years ago. Now we really need some. We have a good customer for whom we put in a

Re: [RE-wrenches] Flickering LED lights on and Outback Dual 7248VFX system

2014-01-07 Thread Bob-O Schultze
I run an old VFX3524 and have LEDs EVERYWHERE in our offgrid home. Two on dimmers. One ac freezer, one DC freezer and one DC fridge. Washing machine, dishwasher, nuke, all that jazz. No flickers anywhere and the old house grounding system sucks bad. Bought most of my LED lamps from Costco. Bob-O

Re: [RE-wrenches] Charge Controller with Configurable Maximum Output Current

2014-01-03 Thread Bob-O Schultze
Midnite Solar has that capability as well. IMO, it's a better CC than the OB FMs. Bob-O On Jan 3, 2014, at 11:37 AM, Jason Szumlanski wrote: What commonly available MPPT controllers have a user configurable current output limit? (other than Outback FM##) Jason Szumlanski Fafco Solar

Re: [RE-wrenches] Entertainment: A contrarian approach to off grid PV

2013-12-16 Thread Bob-O Schultze
Dan, Better he be insulted than you get blamed for the fire. I pass on things like this too. Bob-O On Dec 16, 2013, at 4:42 AM, wrote: This is actually pretty clean compared to some DIY systems. We have a local broadcast engineer up here running an old 12v DR and 20 something L16. He has a

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

2013-11-11 Thread Bob-O Schultze
Dan, I think this thread applied not to OCDs but to an unfused 600VDC disconnect can mounted on a roof which is less than vertical. Bob-O On Nov 11, 2013, at 9:21 AM, Exeltech wrote: Wrenches, There appears to be some misinformation getting into this thread. The "trip" mechanism within standard

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

2013-11-09 Thread Bob-O Schultze
Midnight now has a multi-string 600V rooftop disco. Bob-O On Nov 9, 2013, at 8:14 AM, Kirpal Khalsa wrote: Thank you all for the ideas and infoin many parts of Oregon you are required to have a rooftop fireman's disconnectwe have been using a variety of methods...for small residential w

Re: [RE-wrenches] Security on a ground mount?

2013-10-27 Thread Bob-O Schultze
1/4" stainless steel pop rivets are pretty effective. Cost about $1 each and the tool is about $100. Useful for other large rivets as well. You would need a grinder to get them off. Bob-O On Oct 24, 2013, at 1:37 PM, William Dorsett wrote: We’ve got a system to go up in the student ghetto in th

Re: [RE-wrenches] Fronius Installer Support Sucks

2013-10-16 Thread Bob-O Schultze
Jeff, Bummer. Sounds like you should be madder at Conergy than Fronius here, but it's obviously a FUBAR all around. I've sold and installed Fronius for many years. During that time, I've had about six failures. All were dealt with swiftly and replacement sent out right away. The installer compen

Re: [RE-wrenches] Advice Needed: L16 Accident! Damage Questions

2013-09-14 Thread Bob-O Schultze
And if you do use them, I'd replace the spilled electrolyte with electrolyte, not water. I'd make the battery store do that for you if they poorly wrapped the pack for transport. Chances are that the batts were mostly charged when you got them new so most of the the sulfuric acid would have been

Re: [RE-wrenches] size of Surrette AGM S-460 Stud Terminals?

2013-09-01 Thread Bob-O Schultze
My experience is that a 5/16" bolt will always work but a 3/8" bolt will be tight. Easy enough to ream out to 3/8". It's only soft lead... On Sep 1, 2013, at 7:20 PM, RE Ellison wrote: Most of the ones I have run across are 3/8’s Bob From: re-wrenches-boun...@lists.re-wrenches.org [mailto:r

Re: [RE-wrenches] PV Assist - customer management

2013-08-17 Thread Bob-O Schultze
Jim. Like my dear friend Bob Maynard once told me, "The pioneers get the arrows. The settlers get the land." Bob-O On Aug 17, 2013, at 8:41 AM, Solarguy wrote: > >> Funny reminds me of the old days, I seem to recall a lot of years back, on this same discussion site, a similar exchange. It seem

Re: [RE-wrenches] PV Assist

2013-08-16 Thread Bob-O Schultze
Folks, I've heard lots of good advice on this subject and as an old off-grid system designer, energy conservation has long been a field I take seriously. Generating power that you wouldn't otherwise need because you refuse to use the power wisely is just... Stupid. Stupid financially and stupid

Re: [RE-wrenches] 150 watt dump load for 48 v micro hydro

2013-08-08 Thread Bob-O Schultze
Phone On Aug 8, 2013, at 2:15 PM, Bob-O Schultze wrote: > Then again, SOME of us don't buy Chinese goods. > > On Aug 8, 2013, at 9:53 AM, Ryan wrote: > > To echo Tom the XW is probably the best product for the job. > > Ryan > > > > On 8/8/2013 12:49 PM

Re: [RE-wrenches] GFX Series with generator

2013-08-08 Thread Bob-O Schultze
Then again, SOME of us don't buy Chinese goods. On Aug 8, 2013, at 9:53 AM, Ryan wrote: To echo Tom the XW is probably the best product for the job. Ryan On 8/8/2013 12:49 PM, Tom Duffy wrote: > William > > How about the Schneider XW4024 or if 48 volt a XW4548? It’ll sand alone now > with

Re: [RE-wrenches] GFX Series with generator

2013-08-08 Thread Bob-O Schultze
William, Two possibilities: 1) I'd try a GVFX with the genny they have. If the voltage and frequency on the genny are within "grid" parameters and is stable enough, it should work just fine. If not: 2) get a VFX and a GVFX ac board. Maybe save yourself some time by not mounting the VFX on the wa

Re: [RE-wrenches] Trojan L-16s

2013-08-07 Thread Bob-O Schultze
Steve, Good advice but I'm not at all surprised that most folks don't have a hydrometer. Frankly, unless you are willing to spend a bunch of dough, you aren't going to get one that is worth having. And, they are damn hard to find. The $5 cheapies with the floating balls, etc are just worthless,

Re: [RE-wrenches] Tax credit question.

2013-07-27 Thread Bob-O Schultze
"main" Dan Sent from my iPod On Jul 27, 2013, at 14:36, Bob-O Schultze wrote: > Here is IRS Form 5695. You can hand them a copy and they can make the > determination themselves. As Allan says, we ain't tax advisors. I see on the > dsireusa.org website that it says that th

Re: [RE-wrenches] Tax credit question.

2013-07-27 Thread Bob-O Schultze
Right, I stand corrected. Still, a hunting cabin would be pushing it. On Jul 27, 2013, at 10:23 AM, danbo...@gmail.com wrote: Has to be used as a residence, but does NOT have to be the primary residence. Dan Fink Sent from my iPod On Jul 27, 2013, at 9:43, Bob-O Schultze wrote: > I have

Re: [RE-wrenches] Tax credit question.

2013-07-27 Thread Bob-O Schultze
I have had several offgrid clients apply for and get the Fed ITC for offfgrid systems. You should go to dsireusa.org and read the law. As far as I can tell, so long as your clients fulfill the rest of the requirements, IE the system is installed on their primary residence, etc, then they should

Re: [RE-wrenches] Wet NiCad batteries

2013-06-25 Thread Bob-O Schultze
You might want to check your early Home Powers. We went thorough that dance in 1989 or so. It's ugly and the spent electrolyte is serious toxic waste. On Jun 25, 2013, at 9:32 AM, jay peltz wrote: HI All, I'm looking for information on how you recondition wet cell NiCad batteries, Thanks in ad

Re: [RE-wrenches] outback fx service work

2013-06-12 Thread Bob-O Schultze
Todd, For sure take it off the wall and listen to the other Wrench responses as well. Good advice. When I took an OB Service Tech class back when the FX first came out they warned us that while it was "possible" to do it while mounted, it was a bad idea. While the circuit boards are in rails to

Re: [RE-wrenches] would this work?

2013-06-05 Thread Bob-O Schultze
Todd, I believe the CU200 is just an overpriced LED display and float switch controller. I don't think it does a damn thing to the voltage/current. Bob-O On Jun 5, 2013, at 7:30 PM, toddc...@finestplanet.com wrote: ok wrenches... here is a hair brained idea i came up with. i have this customer

Re: [RE-wrenches] 24V charging with 60 cell modules

2013-06-04 Thread Bob-O Schultze
Mac, No way to do this effectively. You need at least 72 cells to effectively charge a 24V battery, especially during hot weather. Bob-O On Jun 4, 2013, at 8:04 AM, Mac Lewis wrote: Hello wrenches, Is there a good method to charge 24V battery bank with single 60 cell modules? Ideally, I'd lik

Re: [RE-wrenches] Defective modules

2013-06-02 Thread Bob-O Schultze
Me too, please. Bob-O On Jun 2, 2013, at 7:32 AM, jay peltz wrote: Hi Carl Would like to see real data. Photon publishes their module data, and thin film are no where near the top of the list. Nexpower. #14 First solar. #131 Total of 151 modules in the test. Jay Peltz power Sent from my

Re: [RE-wrenches] pump questions

2013-05-31 Thread Bob-O Schultze
Todd, The easiest way to do this is to use the Grundfos pump sizing software. Regrettably, it only runs on a PC. You can input the specs of the module, the head and the GPD desired and it will size the array for you. Once you know the # of modules in series you can use the Imp and Vmp derated fo

Re: [RE-wrenches] not sure what's going on here

2013-05-10 Thread Bob-O Schultze
Ron, It certainly sounds like a failed diode (there are two) to me. Usually they fail open, but it isn't unheard of that they might just avalanche when they see the current of the other PVs. Solarworld would probably replace it under warranty IF you return the dead module to them. How the hell d

Re: [RE-wrenches] Fronius warranty payment

2013-05-10 Thread Bob-O Schultze
t back, they claimed that there was no problem found and so far have refused to pay. I made three trips to the site without reimbursement. BTW, this is the third time this inverter has had a problem. Fronius….no more sold by me. Larry Crutcher Starlight Solar Power Systems On May 7, 2013, at

Re: [RE-wrenches] Dual Channel Inverters

2013-05-07 Thread Bob-O Schultze
Jason, I'm one of the many installers who still won't touch a micro yet. It's not so much that there were failures early on, it's how companies like Enphase HANDLED them. My understanding is that you basically got a replacement inverter and got stuffed for your time and travel. That may have cha

Re: [RE-wrenches] Wasps

2013-05-06 Thread Bob-O Schultze
Jim, Sorry, but that's really bad advice. Smoke doesn't stun bees. It makes them think there is a fire and they begin to gorge themselves with honey in preparation for fleeing. While they are doing that, they mostly ignore you. Might work that way with wasps, but I don't know that for sure and I

Re: [RE-wrenches] TR Inverter Problems

2013-04-30 Thread Bob-O Schultze
The TR is a classic example of what I call 3C. Cheap Chinese Crap. If Xantrex had any ethics at all they would have killed that line and refunded everyone's dough years ago. Bob-O On Apr 30, 2013, at 3:44 PM, Kent Osterberg wrote: Ray, I've got a customer that has the same problem with a dual

Re: [RE-wrenches] 24V Rolls Charging Parameters?

2013-04-29 Thread Bob-O Schultze
Wayne, In the first place, 4 parallel strings of anything is a very bad idea. Micro resistances in cabling and connections plus eddy currents and the like will, over time, inherently unbalance the pack. Doing frequent EQ charges will be required but will not overcome the inherently bad design of

Re: [RE-wrenches] Wire Gutters

2013-04-28 Thread Bob-O Schultze
I use gutters all the time. I zip tie the wires of the separate voltages together and label them with a label maker.Psses inspection every time. Bob-O On Apr 28, 2013, at 5:27 AM, Jesse Dahl wrote: 690.4(B)(1-4)covers the requirements. AC and DC can be together with some requirements for iden

Re: [RE-wrenches] Fuse sizing in battery circuits

2013-04-08 Thread Bob-O Schultze
Even though the CBs may be more convenient, I'd opt for the Class T fuses because they are current limiting whereas CBs are generally not. In a direct short, the inrush current is huge. The T fuse will clamp that for a brief time and then blow. That works in your favor for heavy motor starting s

Re: [RE-wrenches] Two Mates

2013-04-06 Thread Bob-O Schultze
I don't know about the Mate3, but I could never get two Mates to work on a Hub-4 or Hub-10. Yes, there are two spaces for Mates on a Hub 10, but according to one of the techies I spoke to, it was a good idea that never happened. Bob-O On Apr 6, 2013, at 12:01 PM, frenergy wrote: Wrenches,

Re: [RE-wrenches] backup without batteries

2013-03-25 Thread Bob-O Schultze
Hiya Nick, SMA is bringing out an inverter that will do that. Not yet available, I think, but hopefully soon. I heard about it at the NABCEP CE conference this month in Sacramento, CA. I don't think it is specific to using the Mitsu PVs at all. Bob-O On Mar 25, 2013, at 8:56 AM, Nik Ponzio wrote:

Re: [RE-wrenches] SB2500 Refurbish program gone

2013-02-20 Thread Bob-O Schultze
Just about the worst thing a company can do, IMO, is "orphan" a vast number of their early products. This is a slap in the face to the early adopter Wrenches who's recommendations made your company into what it is today. Offering "replacements" which require higher array voltages is clearly just

Re: [RE-wrenches] Snow loads

2013-02-19 Thread Bob-O Schultze
will leave the modules before the roof. But...Gotta be real about that. Bob-O Schultze On Feb 19, 2013, at 11:06 AM, Will White wrote: Most structural engineers I’ve seen take a reduction for slippery surface but I think you’d be stretching things to say adding PV panels reduces the load to zer

Re: [RE-wrenches] Best practices for conduit penetration on roof

2012-11-25 Thread Bob-O Schultze
Don't forget that EMT carrying DC within a building has to be marked every 10'. Bob-O On Nov 25, 2012, at 11:41 AM, Rich Nicol wrote: Soladeck it is, thanks everyone. Rich -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org

Re: [RE-wrenches] Steel roof attachments

2012-10-22 Thread Bob-O Schultze
In the past, I've used 1/4" SS pop rivets. Two per foot which means you have to drill new holes to either side of the existing hole in the foot. They have a shear strength of about 2500 lbs per rivet. If this is a parallel to the roof mount, they should work fine. I use Direct Power racks, so

Re: [RE-wrenches] green tag meters

2012-09-23 Thread Bob-O Schultze
Kirpal, If this is in ETO territory, you no longer have to install production meters on battery back-up systems. Per the 8/1/12 new ETO regs. Did that just make your day? On Sep 21, 2012, at 2:05 PM, Kirpal Khalsa wrote: Hey All! We are doing a grid tied battery back up project and need to inst

Re: [RE-wrenches] Ilsco SGB bonding lug

2012-09-07 Thread Bob-O Schultze
A downside might be that the SS screw will corrode into the AL lug and won't ever unscrew after 9 months or so in the weather unless you put some sort of anti-seize on it. This tip also applies to S5! clips. I got it from the S5! tech guy. Bob-o On Aug 27, 2012, at 7:37 PM, David Brearley wrote

[RE-wrenches] DR512

2012-09-07 Thread Bob-O Schultze
Anyone have any experience backing up a Toyotomi oil stove with one of these? Thanks, Bob-O ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrench

Re: [RE-wrenches] Invert first?

2011-10-02 Thread Bob-O Schultze
And, of course, made in China. Given other good choices, that loses me right there. On Oct 2, 2011, at 10:36 AM, Dan Fink wrote: Brand new, and it is shipping now. XW-MPPT80-600. It certainly raised my eyebrows. But it's so new that i don't know of anyone who has installed one yet. Dan Fink Ex

Re: [RE-wrenches] Dangerous installs/installers..

2011-07-02 Thread Bob-O Schultze
Dan, The problem with them getting busted by an AHJ is that no one gets -or is required to get- a permit for plugging in an appliance. That's how the peeps are going to view these things and regrettably, that's how they are going to be marketed. There are far more non-UL and falsely marked UL pr

Re: [RE-wrenches] Sealed L-16 size batteries / battery terminals

2011-06-29 Thread Bob-O Schultze
Need we mention here that Fullriver batteries are made in China as are so many of the PVs flooding the market these days? Honestly folks, we are killing our own industry. Hark ye back to the words of the Prophet Pogo: "We have met the enemy and he is us." Bob-O On Jun 29, 2011, at 10:41 AM, L

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

2011-06-28 Thread Bob-O Schultze
Howie, I've had nothing but good luck with Fronius. I've had a few failures (what inverter manu doesn't?) but very few and Fronius has excellent tech support and the best installer compensation program out there. I never load up any inverter to maximum PV watts if I can help it. I think that's

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

2011-06-09 Thread Bob-O Schultze
Good point, Matt. We've been required to install a revenue-grade solar production KWH meter in Oregon with every system. In 6-7 years with different inverter manus, I've never seen an inverter KWH display that wasn't, shall we say... exuberant, in relation to the revenue grade meter. Bob-O On

Re: [RE-wrenches] 24 volt Battery Bank comparison

2011-06-02 Thread Bob-O Schultze
This has been a great string. Battery systems and the weather are the most variable things we all have to deal with- and the most misunderstood. I totally agree with Darryl here and it makes common sense. PV cells are manufactured under seriously strict controls and nearly entirely by machines a

Re: [RE-wrenches] 24 volt Battery Bank comparison

2011-05-31 Thread Bob-O Schultze
Wayne, I'd recommend against that. To do an effective equalization charge on that bank you'll need to get the voltage up to at least 2.6-2.7V per cell. That would mean a 13 cell pack voltage of 34-35V. Got any DC loads at all? Danger, Will Robinson, Danger! Using the inverter as a charging sour

Re: [RE-wrenches] 24 volt Battery Bank comparison

2011-05-31 Thread Bob-O Schultze
Wayne, First, let's hope you mean 12 of the 2YS31. A single battery string is always preferable to multiple strings in my book. The only downside is interconnect cables the same size as your inverter cables. That probably means 4/0 CU for most 24V, 3KW and up inverters. Two strings in parallel-n

Re: [RE-wrenches] Fwd: out of business

2011-05-17 Thread Bob-O Schultze
Why, it's just what every sheeple needs! What the hell, I was looking for a job when I found this one... Cheers, Bob-O On May 17, 2011, at 5:29 PM, Ray Walters wrote: Fellow (soon to be former) Wrenches; This is it boys; we're done for! Ray Walters Original Message Check th

Re: [RE-wrenches] Battery purchase scam warning

2011-05-10 Thread Bob-O Schultze
If they a) ask what kind of credit card you take and/or b) want things shipped fast freight RUN! Otherwise, just walk away. On May 10, 2011, at 10:01 AM, la...@starlightsolar.com wrote: Has anyone received a request to quote 50 Lifeline GPL-6CT batteries? I think a scam might be going on. Conta

Re: [RE-wrenches] Interfacing an Air 403 wind generator

2011-05-05 Thread Bob-O Schultze
Give it a resistor to work against and call it Kinetic Yard Art. Not worth much else... On May 5, 2011, at 11:15 AM, Peter Talmage wrote: Hi Dana, The battery and all associated equipment is being totally removed as the folks are now unable to do the required maintenance. They really love the

Re: [RE-wrenches] 2 volt Trojan RE series L16 Batteries

2011-04-20 Thread Bob-O Schultze
Rich, It sounds like you've got a rotter or two. Given the short age of the pack, that's my suspicion. Try checking the individual battery voltages when under load and fairly well discharged. I've seen a new battery bank all show good SG and individual voltages while resting but one or more batt

Re: [RE-wrenches] Batteries in parrallel Failure

2011-04-20 Thread Bob-O Schultze
While I think that any system with more than three parallel battery stings is a FUBAR waiting to happen, I agree with OC devices on all the strings and using the bussbar technique. I would certainly go with Class T fuses rather than CBs as the Class T is current-limiting and boy do we have curre

Re: [RE-wrenches] Xantrex / Schneider recall update

2011-04-04 Thread Bob-O Schultze
Aw Andrew.. give 'em a break! The parts have to come all the way from China, just like everything else that outfit sells. Bob-O On Apr 4, 2011, at 4:07 PM, Solar Energy Solutions wrote: Just got off the phone with Schneider Electric, formally Xantrex. They said, "bla bla bla, yada yada yada"

Re: [RE-wrenches] NABCEP Test

2011-04-01 Thread Bob-O Schultze
Larry, This also from Ezra -who, because of a bit of silliness on the part of the moderator of this list- cannot post here. "Larry, NABCEP provides test takers with a passing score and a partial breakdown of their score by exam blueprint area. It is always a bit confusing because we report onl

Re: [RE-wrenches] NABCEP Stamp

2011-03-30 Thread Bob-O Schultze
Troy, On Mar 30, 2011, at 10:04 AM, Troy Harvey wrote: I am wondering if anyone has had a NABCEP stamp made to stamp plans. I have a city agency who is comfortable with the NABCEP certification as a qualification, but would like to see a stamp. Has anyone out there done this? Troy I'm with And

Re: [RE-wrenches] racks

2011-03-24 Thread Bob-O Schultze
DP&W has a similar thing, but it's a clamp which grips the module frame from underneath. Bob-O On Mar 24, 2011, at 7:30 AM, jay peltz wrote: I wanted to add to the rack discussion that Unirac has a clip ( bottom mount clips) that allow you to use their rails but mount via the module mounting h

Re: [RE-wrenches] Value of PV system to a home

2011-03-23 Thread Bob-O Schultze
Regardless of the valuation placed on a PV or SHW system, a "green" real estate broker I know tells me that in the current market, having either or both of those on a home significantly increases the chance of the home actually selling rather than sitting on the market forever. It's hard to imag

Re: [RE-wrenches] Tall pole mount

2011-03-22 Thread Bob-O Schultze
Holt, Tracker technology and reliability has come a very long ways in the last five years or so. It used to be that my service calls on trackers were -by far and away- greater in numbers than for any other component. Still, I wouldn't consider putting a tracker -at least one that uses electricit

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

2011-03-05 Thread Bob-O Schultze
The sad truth is that if a determined, competent thief wants your stuff, it's likely gone. Fortunately, MOST thieves are neither. I use 1/4" stainless steel pop rivets in a situation like this. It takes a grinder to remove them and steal the PV. With a little luck someone will see the sparks fro

Re: [RE-wrenches] Array tilt angle doesn't matter?

2011-02-21 Thread Bob-O Schultze
Jim, Obviously, your latitude will make a big difference. The further north you go the wider the summer to winter sun angle. Also, I'd want to know if that data was taken using just I/V curves or through a controller which had MPPT capabilities. In a real world situation with MPPT, I'm guessing

Re: [RE-wrenches] Meter base minimum conductor size

2011-02-09 Thread Bob-O Schultze
I use Maverick's ferrule method. I buy #10 uninsulated barrel connectors and crimp them on my 10AWG conductors. Good Luck, bob-O On Feb 9, 2011, at 4:23 PM, Carl Adams wrote: Wrenches, We often use a conventional 100A meter base and analog meter as an independent metering system for inverter o

Re: [RE-wrenches] FX inverter shutting itself off

2011-02-06 Thread Bob-O Schultze
John, Sounds like low voltage cutouts. And it is the dead of winter so the batts will be voltage depressed. Try installing the temp sensor directly into the FM60 rather than to the Hub. Also, unless those L16s are sealed, maybe bump the absorption voltage up to 30VDC or even a bit more for the w

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

2011-02-06 Thread Bob-O Schultze
Larry, Aram, etc, Let me put this as succinctly as I can: NO FREAKIN' WAY! I've sat on the NABCEP BoD for many years -almost since it began. I am not an IBEW or NECA member, nor have I ever been. I've had my CA C-10 since 1991 and I've been a NABCEP Certified PV installer since 2003. For many yea

Re: [RE-wrenches] warranty liabilities

2010-11-01 Thread Bob-O Schultze
Marco, The only things on a battery-less PV system that carry a warranty are the modules and the inverter. The rest is pretty much on the installer to do a good job. Unless you are using 3C (Cheap Chinese Crap) modules, the probability of a failure is very small. Personally, I use an inverter wh

Re: [RE-wrenches] The Demise of WEEB

2010-09-13 Thread Bob-O Schultze
Ray, Your picture is clearly one of an aluminum lug with a steel screw. I would agree that this lug is unacceptable, but this is NOT the lug which is commonly used and has been used for many years. While you apparently are infatuated by the WEEB device, not all of us are. Could you please do us

Re: [RE-wrenches] Grundfos SQ Flex Float Switch

2010-08-23 Thread Bob-O Schultze
Hiya Kirpal, They are just signal wires from the CU200. Cheers, Bob-O On Aug 23, 2010, at 1:54 PM, Kirpal Khalsa wrote: Hi All.I can't find it in any of the manuals for grundfos.does anyone know if the wiring to the float switch carries current or not. The float switch has 3 #14AWG wir

Re: [RE-wrenches] AL wire with DC

2010-07-27 Thread Bob-O Schultze
Agreed with Dick on this one. First, if you are going the DB route, then you have to get it down at least 24" instead of 18". No problem some places, a HUGE problem others. Then there are the burrowing critters like ground squirrels which love to chew on anything. I have heard that there is som

Re: [RE-wrenches] wind scam?

2010-07-24 Thread Bob-O Schultze
Hiya Todd, Well, your first clue is that in the video, it's installed about 10' off the deck. The second is the claim that it can reduce your power bills by half. That is particularly interesting when one goes to the website and finds out that it doesn't even cut in until 11.1mph wind speed (mos

Re: [RE-wrenches] Picking a Quality Chinese PV Module

2010-07-20 Thread Bob-O Schultze
oun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bob-O Schultze Sent: Monday, July 19, 2010 4:30 PM To: RE-wrenches Subject: Re: [RE-wrenches] Picking a Quality Chinese PV Module If you like buying your oil from the Mideast and think that's a good

Re: [RE-wrenches] Picking a Quality Chinese PV Module

2010-07-19 Thread Bob-O Schultze
If you like buying your oil from the Mideast and think that's a good idea, then you will love buying your PV from China. On Jul 19, 2010, at 3:14 PM, Peter Parrish wrote: We normally take a very conservative approach to accepting new product, whether they be PV modules or inverters. As a result

Re: [RE-wrenches] AM noise on battery less inverters

2010-06-28 Thread Bob-O Schultze
Not all sinewave inverters cause the AM wipeout by a long stretch, but those Morningstar 300W jobs are one of the worst. I refuse to sell them. Bob-O KG6MM On Jun 27, 2010, at 6:58 PM, Glenn Burt wrote: I just saw this firsthand this week - I was out camping and had a Morningstar SureSine 300W i

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

2010-06-22 Thread Bob-O Schultze
One set of batteries in a series string is best. two paralleled strings are OK, three are marginal, four or more is just a bad idea and it's nearly impossible to get them to play nice together for long. Good Luck, bob-O On Jun 22, 2010, at 5:15 PM, Mark Frye wrote: Thanks Phil, I really appre

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

2010-06-17 Thread Bob-O Schultze
I'm in agreement with Brian on this one. Of course, the realities are that it's another big expense associated with putting in a system and doing a service change may exceed your license classification. That said, in this case the inspector is doing you a favor if he wants you to stay the hell o

Re: [RE-wrenches] Mage Solar

2010-06-02 Thread Bob-O Schultze
Manufactured where? On Jun 2, 2010, at 8:19 PM, Drake Chamberlin wrote: Hello Wrenches, Who has tried Mage solar modules? http://www.magesolar.com/us/products/mono-and-polycrystalline-modules.html They look really good with a 30 year power warranty, a 10 year product warranty and +5% tol

Re: [RE-wrenches] 30-year old PV module

2010-05-24 Thread Bob-O Schultze
Joel, A good argument against ever increasing PV sizes and a great argument against big PVs on RVs and other mobile mounts. Thanks, Bob-O On May 22, 2010, at 4:42 PM, Joel Davidson wrote: Hello Drake, (silicon not silicone) Good question about thickness. I recently inspected a circa 1996 sola

[RE-wrenches] NABCEP Announces New Level in PV Installer Certification Program

2010-05-20 Thread Bob-O Schultze
Subject: NABCEP Announces New Level in PV Installer Certification Program Reply-To: i...@nabcep.org NABCEP Announces New Level in PV Installer Certification Program CLIFTON PARK, NY, May 20, 2010 - The North American Board of Certified Energy Practitioners (NABCEP) announces new credentialin

[RE-wrenches] NABCEP Releases Small Wind Installer Certification Application Ahead of the September 2010 Exam

2010-05-20 Thread Bob-O Schultze
Subject: NABCEP Releases Small Wind Installer Certification Application Ahead of the September 2010 Exam Reply-To: i...@nabcep.org NABCEP Releases the Small Wind Installer Certification Application Ahead of the September 2010 Exam Clifton Park, NY, May 19, 2010 - NABCEP The North American B

[RE-wrenches] NABCEP Statement about ULU

2010-05-04 Thread Bob-O Schultze
PRESS RELEASE CONTENT: May 5, 2010 Clifton Park, New York NABCEP Charges Ahead with New Credentialing Opportunities The North American Board of Certified Energy Practitioners (NABCEP) announces new credentialing programs in response to growing renewable energy markets. NABCEP Chairperson Don Wa

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