[RE-wrenches] generator suggestions

2013-01-29 Thread toddcory
wrenches, i am working on a design for an off grid camp. they need a new generator as the one they have is a total pos. i am interested in suggestions for a commercial grade, 10 to 15 kW propane fueled unit. are kohler and onan still the best thing going or am i living in the past? thanks,

Re: [RE-wrenches] Best racking systems (was Awkward Mid-clamps & jigs for installing or removing modules?)

2013-01-18 Thread toddcory
or heavy snow... the supports are clear out on the ends. todd On Friday, January 18, 2013 5:09pm, "Chris Daum" said: So how does the Zep stuff's testing do in winds in excess of 100 mph? I saw a nice demo and display of their goods in at the Anaheim 2009 SPI, but still am reticent

Re: [RE-wrenches] off grid PV connected to generator

2013-01-15 Thread toddcory
one of my biggest gripes about the outback fx series is only one ac input... this was a major step backwards from its trace sw series predecessor. if someone is going to want battery back up on a grid tied system, they surely are going to want the ability to back that up with a generator. the ra

Re: [RE-wrenches] Fridge recommendations?

2013-01-09 Thread toddcory
how about wisely locating the rf in a non-heated space to reduce/eliminate the winter run time? todd On Wednesday, January 9, 2013 12:22pm, "Dave Palumbo" said: > Howie, > > I usually agree to the Kenmore/Sears recommendation but the closest Sears is > coming in with is with 18 cu'

Re: [RE-wrenches] Heat Tape

2013-01-02 Thread toddcory
i have done this on a particularly problematic installation here in our heavy mount shasta snow country - where the deep snow would freeze to ice on the module, and as it crept down the array, it would peel off the bottom edge of the module frame, usually resulting in broken glass/destroyed mod

Re: [RE-wrenches] RFI Interference with Ham radios

2012-12-23 Thread toddcory
no experience with this, but led lights pretty much wipe out 2 meter operations. todd On Sunday, December 23, 2012 7:31am, "Lee Bristol" said: Mr Friends, Does anyone have experience with Enphase 215 inverters on a roof interfering with a Ham radio operation either from the unit

Re: [RE-wrenches] DC, or not DC, Dat is Da question (Two Load Questions)

2012-12-11 Thread toddcory
this brings up a probably off topic subject regarding efficiency. i have always considered efficiency and conservation to be job one... especially on off grid systems... but with modules so inexpensive... does this still make sense? for example, i have an off grid customer who i suggested get a

Re: [RE-wrenches] Fix the Fluorescents: What about LED tubes for late 2012?

2012-12-05 Thread toddcory
here in mount shasta woo-woo land, there are loads of folks who hate fluorescent lighting (never mind that they never notice fixtures with cfl's in them). they are all smiley though about leds (go figure). my experience with leds is the lumens/watt is still no greater than a good cfl/hid lamp

Re: [RE-wrenches] Roof flashings on L-feet in high snow load conditions

2012-11-13 Thread toddcory
the engineering called for 8" sch 80... and some super strong rebar in the base. i subbed out the mount so dont have all the details easily accessible... but if i recall, the hole is like 6' deep and 5 feet square. it seemed inadequate to me, but it was engineered, so i guess good to go. todd

Re: [RE-wrenches] Roof flashings on L-feet in high snow load conditions

2012-11-13 Thread toddcory
I have never had good results with roof mounted pv in our heavy (mount shasta) snow area. the snow tends to creep down the glass and peel the bottom of the frame off the module... and then the glass breaks as it has no support in that area. so, around here... i do pole mounts WAY up in th

Re: [RE-wrenches] Ten K Solar

2012-10-22 Thread toddcory
ac & dc are very different animals. todd On Monday, October 22, 2012 2:03pm, "Chris Mason" said: Maybe we should reduce our household voltage to 70V also, it would be save and you could fuse it... On Mon, Oct 22, 2012 at 4:40 PM, jay peltz <[mailto:j...@asis.com] j...@asis.com> wr

Re: [RE-wrenches] Ni-Fe batteries

2012-09-25 Thread toddcory
supposed to be horribly inefficient (like less than 50%) but last forever. todd On Tuesday, September 25, 2012 3:02pm, "bob ellison" said: Watch the Chinese ones, lots of problems there. Bob Ellison From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lis

Re: [RE-wrenches] green tag meters

2012-09-21 Thread toddcory
i buy mine from vision metering (used to be austin international) for $75.00 [https://visionmetering.3dcartstores.com/Vision-Meter-Form-12S-120V-Class-200_p_211.html] https://visionmetering.3dcartstores.com/Vision-Meter-Form-12S-120V-Class-200_p_211.html todd On Friday, September 21, 2

Re: [RE-wrenches] Housekeeping

2012-09-14 Thread toddcory
thank you for allowing this. it is very useful for trying to find old, matching modules. todd c2. From time to time people post items that they need but are having problems locating (like an older model PV module to replace a broken one), but these requests should be responded to off-list

Re: [RE-wrenches] Grid tie with BB

2012-09-02 Thread toddcory
flooded lead antimony - NOT flood lead calcium. todd On Sunday, September 2, 2012 11:30am, "Drake" said: I just went through the same thing, and installed a 2205 Watt system on 4 Concord 224 Ah (24 hr rate) batteries. I talked with the Concord tech support, and was told that this wa

Re: [RE-wrenches] Outback with grid charging

2012-08-24 Thread toddcory
i am not understanding the 'wisdom' of using non-grid tie inverters in this application. it is pretty easy to modify the inverters (board change out) to grid tie models, which would allow the inverter's to transfer the loads to the grid (internal transfer switch) and 'sleep' until there is an o

Re: [RE-wrenches] Metering a whole house Outback system

2012-08-21 Thread toddcory
i get mine through vision metering (used to be austin international). refurbished, and programmed for seperate buy & sell registers they are around $75.00 each. [https://visionmetering.3dcartstores.com/Vision-Meter-Form-12S-120V-Class-200_p_211.html] https://visionmetering.3dcartstores.com/

Re: [RE-wrenches] Metering a whole house Outback system

2012-08-20 Thread toddcory
you will need two kv2c 'green tag' meters... one for each 120 volt leg. todd On Monday, August 20, 2012 9:15am, "Hilton Dier III" said: Hello Wrenches, Here's a metering conundrum for you. I have a client with a dual stacked Outback 3648 inverter panel and a PV array. He has

Re: [RE-wrenches] Combating requests for itemized PV pricing

2012-08-18 Thread toddcory
jason and others - i also get these folks, but my reputation is stellar and i am (thankfully) in such high demand that i can still turn down work, which allows me to keep my bull-shit-detector fully activated and be very selective with who i will work for. that being said... we have a diy com

Re: [RE-wrenches] GTWB outage monitor question

2012-08-10 Thread toddcory
actually this is not the problem i have with amp hour meters on grid tie with battery systems. a floated battery does not need an occasional bulk charge. it is being float charged which compensates for any internal self discharge. the only thing needed is an occasional eq to stir the electrol

Re: [RE-wrenches] GTWB outage monitor question

2012-08-09 Thread toddcory
i have always used the good old e-meter/link 10. i manually program the charge efficiency at 99% (why won't the manufactures allow a 100% setting?). the problem is that 1% error... since the meter treats charge different than discharge. the old e-meters seemed to handle this fine... but the

Re: [RE-wrenches] Standing Seam Clamp for 1" wide seam?

2012-08-08 Thread toddcory
i don't know if this will work for you, but i had a job a few years back with wider than standard seams. i contacted the mfgr and they said it was ok to crush the seam under the proposed s5 location with channel locks.   granted, these seams were just over the 1/2" width and tapered/opened wider as

Re: [RE-wrenches] Small battery bank vs too large array

2012-07-19 Thread toddcory
what is the point of having battery backup if is is so small as to not really be able to back anything up (except when the sun is shining)? this seems like a system design error rather than a charge controller problem. my .02 todd On Thursday, July 19, 2012 4:35pm, "Brian Teitelbaum

Re: [RE-wrenches] Battery Experience

2012-07-13 Thread toddcory
"The more savvy customers I will recommend they turn off the PV's when they are there to get a deep discharge in." um, why use up battery cycles unnecessarily like this? todd On Friday, July 13, 2012 7:28am, "Jason Lerner" said: > ___ > List s

Re: [RE-wrenches] Battery Experience

2012-07-09 Thread toddcory
and the difference betaeen the L16RE-A & L16RE-B is? todd On Monday, July 9, 2012 12:53pm, "John DeBoever" said: Jason, Wrenches, Thank you for your patience and positive statements on Trojan Battery Company. Last week was a busy and I was away from my desk most of the time with l

Re: [RE-wrenches] L feet no flashing in shingle roof

2012-07-03 Thread toddcory
i wasn't going to enter into this discussion, but this posting prompted me. my most recent job was done with the assistance of the customer. he and i have a long working history, my being his employee some 25 years ago installing shw systems in the area, and now he hiring me to do his personal

Re: [RE-wrenches] Magnum Energy Remote Control

2012-06-28 Thread toddcory
i have only done a couple of magnum off-grid systems with the standard programming interface, so it is news to me that there is another interface available. i need some clarification. this: 2) All Auto Gen Start and Battery Monitor settings and displays are included indicates there is a bu

[RE-wrenches] outback power wrench support?

2012-06-20 Thread toddcory
wrenches, i recently installed a grid-tie with battery backup system. the fm 80 was defective out of the box, so i called outback for a replacement. i got a refurbished unit which when installed resolved the problem. the customer was not happy about paying for a new unit and getting a used on

Re: [RE-wrenches] power factor

2012-05-07 Thread toddcory
excellent replies to yes, a complicated issue. i think i finally understand this. thank you kent and dan! todd On Monday, May 7, 2012 9:02pm, "Exeltech" said: Hello Todd, The short answer to your "is this a concern?" query, is "no". Reactive power is one of the more complex aspects

[RE-wrenches] power factor

2012-05-07 Thread toddcory
wrenches, i have a question about my home's system. i was one of the first net metered systems in our area, so the utility company installed a fancy dual register meter which also displays kvar/power factor. when selling 1 kW today the power factor was .40 and the kvar was 2.37. this sounds ho

Re: [RE-wrenches] Off-Grid to Grid-Connected -essential loads

2012-05-05 Thread toddcory
i am not sure what the advantage is of running in HBX mode? why not simply grid-tie this where any surplus power (over local use) gets sold to the grid? also the vfx's can be sent into ob for upgrading to gvfxs. no need to buy new inverters. todd On Saturday, May 5, 2012 12:36p

Re: [RE-wrenches] Solar World 2.0 frames

2012-05-04 Thread toddcory
i did a top of pole mount with these modules. the traditional pole mount hardware was replaced with dpw power rails. i know this is a solid mount but somehow nuts and bolts through a rear flange feels stronger. the biggest issue was there is no place to mount the wire routing clips. this prov

Re: [RE-wrenches] Solar product whole sellers with good reputation

2012-04-24 Thread toddcory
michael probably doesn't like the direction of this thread, but i think this is great... kind of like the wrenches better business bureau, where we can learn from others, which will help us avoid companies with poor track records. todd On Tuesday, April 24, 2012 4:10pm, "William Miller

Re: [RE-wrenches] pressure switch question

2012-04-19 Thread toddcory
oh, well if they have two basic settings (one for high water and one for low) you could wire two pressure switches in with a toggle switch to transfer back and forth between the two. just an idea. these switches are pretty bombproof. todd On Thursday, April 19, 2012 7:33am, "Jay Peltz"

Re: [RE-wrenches] pressure switch question

2012-04-18 Thread toddcory
why not just use a well pump pressure switch? todd On Wednesday, April 18, 2012 8:29am, "jay peltz" said: > HI All, > > I'm looking for a contact pressure gauge with built in switches. > > ( this is an example..http://www.indumart.com/P84.pdf) > > I am looking to turn on/off a h

Re: [RE-wrenches] PV harvest in grid-tied systems

2012-04-18 Thread toddcory
im curious david, how you measure the output of the radian since the system is grid tie/w battery backup. the only way i have seen to do this is with a kv2c meter on each 120 volt leg. is that how you are monitoring the output of the inverter? thanks, todd On Wednesday, April 18, 20

Re: [RE-wrenches] Small Generator

2012-04-04 Thread toddcory
slightly off topic, but does the magnum offer 'generator support' like the old sw's did? this would be critical when operating off a small genny like that. todd On Wednesday, April 4, 2012 4:29pm, "Larry Crutcher, Starlight Solar Power Systems" said: The Honda works great since the Ma

Re: [RE-wrenches] Kohler 8.5 RMY question

2012-04-04 Thread toddcory
ditto that question. i have only installed one genewreck... an 8 kW unit installed as grid backup. it sees very little use, but it is a total piece of shit. i have replaced the starter motor casting mount twice... of course they never bothered to redo the poor initial design, so replacing a

Re: [RE-wrenches] embedded energy in pv

2012-03-15 Thread toddcory
dang... this was from a movie i watched last week. i thought was still on my hard drive... and i cannot find it now... todd On Thursday, March 15, 2012 1:46pm, "Steve Jefferson" said: Could you site a source for this? I googled this and saw nothing like the 1 – 4 tons of coa

Re: [RE-wrenches] No underside access metal biulding attachment

2012-03-15 Thread toddcory
i think bob o once said he used ss pop rivets on a job like this. todd On Thursday, March 15, 2012 9:26am, "lars Ortegren" said: Wrenches, We have a project coming up where we are installing a large array on a low slope metal building with metal purlins. Typically we would through bo

[RE-wrenches] embedded energy in pv

2012-03-15 Thread toddcory
i recently read that it takes the equivalent energy of between 1 and 4 tons of coal to make a single pv module. this is why i insist my customers do their efficiency upgrades and learn how to be frugal/conserve before i will even talk about pv with them. renewables powering waste is old parad

Re: [RE-wrenches] Grid-Tied, PV by AC or DC

2012-03-01 Thread toddcory
i think mark was asking more about ac coupling to get away from the horrible inefficiencies of battery based, grid-tied inverters. as an experiment, i have been thinking about ac coupling one (or more) of my arrays on my outback system to gain 10% over having the gvfx do the selling. stc to

Re: [RE-wrenches] Grid-Tied, PV by AC or DC

2012-03-01 Thread toddcory
excellent question mark... and one which has been on my mind as well, being most of my work is bbgt. todd On Thursday, March 1, 2012 11:37am, "Mark Frye" said: Folks, I have a residential grid-tied customer in a net metered utility with a favorable TOU rate. They could use about 10 k

[RE-wrenches] AUO ac moudles

2012-02-22 Thread toddcory
esteemed wrenches, i am looking at the AUO brand of AC modules for an upcoming job. this is a 250 watt module with a 255 watt microinverter attached to the back. both carry a 25 year warranty. as we all know, warranties are only as good as a company's longevity. this is a taiwanese made produc

Re: [RE-wrenches] cycling flooded batteries is not necessary

2012-02-21 Thread toddcory
the two battery manufacturers say that cycling of floated batteries is 100% unnecessary. equalizing is still important to prevent stratification of the electrolyte... but equalizing and cycling are different things. todd On Tuesday, February 21, 2012 6:33am, "Drake" said: In my exp

[RE-wrenches] cycling flooded batteries is not necessary

2012-02-18 Thread toddcory
to reiterate wrenches: two battery manufacturers (surrette & trojan) have both stated there is NO NEED to cycle floating, flooded lead-antimony batteries. i have heard this urban legend for some time and it is nice to finally have it put to rest as an incorrect myth. todd On Saturda

Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB

2012-02-16 Thread toddcory
this confirms what i have also been told by jamie surrette, namely that cycling is NOT necessary for flooded lead- antinimony batteries. while slightly more expensive, flooded lead-calcium is THE battery designed for this kind of use... plus they last longer, and use next to no water. monthl

[RE-wrenches] sell voltage

2012-02-15 Thread toddcory
here is another battery related question i'd like feedback on. my home system is grid-tied with battery backup. the default 'sell' voltage was 51.2 (48 volt system). the new firmware sets that point at 52 volts. another manufacturer of these kinds of inverters now sets their default sell voltag

Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB

2012-02-15 Thread toddcory
my inquiry is about the health of floating a lead antimony battery bank, in a grid-tie with battery back-up system, where the batteries float 99% of the time... considering (not specifically about any particular brand/manufacturer) i have also heard talk about the necessity to have to "work har

Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB

2012-02-15 Thread toddcory
the only time an OB GFX bulk charges is after a grid outage. todd On Wednesday, February 15, 2012 10:58am, "Jason Szumlanski" said: I’ve had some success with RE batteries in float service by reducing the absorb time and float voltage. Talk to the manufacturer for their recommendati

Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB

2012-02-15 Thread toddcory
i would LOVE it if jamie surrette would chime in on this comment. todd On Wednesday, February 15, 2012 10:51am, "Larry Crutcher, Starlight Solar Power Systems" said: I would not recommend using an RE battery for standby/back up use. There is a similar problem that I have seen. People u

Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB

2012-02-15 Thread toddcory
> I've been happy with Trojan batteries. They do say that they need up to 100 > cycles to reach full capacity. so what does this mean for grid ties/battery back-up? todd Sent from Finest Planet WebMail. ___ List sponsored by Home Power magazine

Re: [RE-wrenches] 110Vac LED resistance to weak grids in developing world

2012-02-09 Thread toddcory
i have some personal experience with led light bulbs. i put them outside because the cfl floodlights are very s-l-o-w to warm up to full brightness. 1) leds are still slightly less efficient (lumens per watt) than cfl's 2) led light bulbs (2 different brands) throw out an ungodly amount of rfi.

Re: [RE-wrenches] DC to AC derate

2012-01-05 Thread toddcory
to my knowledge the balancing transformer cannot be used with a grid tie. are you using two outback kvc2 meters for recording the ac sell kWh? (each 120 volt leg needs one.) todd On Thursday, January 5, 2012 1:33pm, "Ray Walters" said: I have a related question to this. Does settin

Re: [RE-wrenches] DC to AC derate

2012-01-04 Thread toddcory
ps i forgot to add i am using a bank of lead calcium wet cells which have a much lower standby loss than lead antimony. todd On Wednesday, January 4, 2012 8:16pm, toddc...@finestplanet.com said: I consistently see 87% DC kWh to sold kWh with my Outback system. (don't forget to also co

Re: [RE-wrenches] DC to AC derate

2012-01-04 Thread toddcory
I consistently see 87% DC kWh to sold kWh with my Outback system. (don't forget to also consider the usual STC to PTC derating) Todd On Wednesday, January 4, 2012 3:01pm, "All Solar, Inc." said: Wrenches, Once again I am trying to size a grid tie w/battery system and I struggle a li

Re: [RE-wrenches] System Performance | Battery Based Grid Tie

2011-12-20 Thread toddcory
85% of STC kWh or PTC kWh? todd On Tuesday, December 20, 2011 5:44pm, "Wayne Irwin" said: Wrenches, I am looking for advice and or comments on system performance from a Grid Tied battery back up system. Is 65% efficiency fair as far as what goes back to the grid? Is PV watts a good

Re: [RE-wrenches] System Performance | Battery Based Grid Tie

2011-12-20 Thread toddcory
that's a nice conservative estimate for input STC kWh to sold kWh jeremy as far as charge controller kWh to sold kWh, my OB 3648 runs in the ~87% range todd On Tuesday, December 20, 2011 3:00pm, "All Solar, Inc." said: Wrenches, I am looking for advice and or comments on system

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

2011-12-06 Thread toddcory
no, he said he only wanted to meter what was being sold to the grid... not what was sold to the grid plus local consumption (which is the only way to measure total PV production). btw austin international (they have a new name now) has cheaper meters., todd On Tuesday, December 6, 2011

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

2011-12-06 Thread toddcory
treat this as you would treat metering a standard non battery system. the KV2 meters are for combining the local consumption with the selling to the grid. a standard, single direction counting kWh meter in series with the 240 v grid tie will do what you want. todd On Tuesday, December 6

Re: [RE-wrenches] Shell SQ165-PC - SolarWorld SQ165-PC

2011-11-24 Thread toddcory
Contact Solarworld to see if they will sell you a couple of the 165's from their warranty replacement stash. I did this recently with some SQ80's I needed. They were pleasant to deal with and had what I needed (that no one else had). Todd On Thursday, November 24, 2011 11:41am, "Pek

Re: [RE-wrenches] Convert Grid Tie SW4048 to Backup System; Add New Inverter, AC Coupled

2011-11-20 Thread toddcory
On Sunday, November 20, 2011 9:32am, "Joel Davidson" said: Wrenches, I answered Richard off-list, but other wrenches may find this information about old SW4048s and batteries useful. The SW4048 is a solid machine. We've been using one since 1998 and have sold hundreds of them for

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

2011-11-17 Thread toddcory
Hi Mark, I have been grid tied (zero energy since 2004) for 15 years. I used to live off grid before I moved here to this home 17 years ago. Todd On Thursday, November 17, 2011 12:36pm, "Mark Frye" said: Todd, I thought you were totally off-grid. Mark Frye Berkeley Solar El

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

2011-11-17 Thread toddcory
wow, thanks for the information. hopefully they will have them in production in 20 years when my current "beta set" finally dies. c&d and others make em, but they are more expensive.   todd       On Thursday, November 17, 2011 11:15am, "Richard L Ratico" said: > Todd,> > I asked Surrette about th

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

2011-11-16 Thread toddcory
I digress but... the best battery for grid tie with backup is not lead antimony, but lead calcuum. Surrette makes these too and they use next to no water and have a much longer warrantied life. Todd On Wednesday, November 16, 2011 6:52pm, "Jeff Yago" said: No doubt these would be g

[RE-wrenches] federal tax credit

2011-11-10 Thread toddcory
Wrenches, I got the following information from a customer who ran the federal tax credit by her accountant. As a double check... is this correct? Thanks, Todd My accountant wrote: The taxpayer claiming the credit must be the owner of the home. The value of these credits adjust

Re: [RE-wrenches] High Voltage MPPT units

2011-11-04 Thread toddcory
what is the max wattage the unit can handle? (it can't be 80 X 600?) todd On Friday, November 4, 2011 4:12pm, "John DeBoever" said: > Schneider Electric just launched their MPPT 80-600, which is a 80A , up to > 600 V. > > John > Trojan Battery Company > > - Original Message ---

[RE-wrenches] ground

2011-09-29 Thread toddcory
Does anyone know if it is ok to use the rebar in a pole mount foundation as a ufer ground? I need to ask the inspector too, but thought I'd ask here first. Todd Sent from Finest Planet WebMail. ___ List sponsored by Home Power magazine List Ad

Re: [RE-wrenches] High Temp Batteries

2011-09-22 Thread toddcory
Have you considered a burried, underground vault? We did this with broadcast equipment when I did that work years ago and it worked great at moderating high/low temp swings. Todd On Thursday, September 22, 2011 8:35am, "Chris Daum" said: Dear Wrenches: I have people trying to powe

Re: [RE-wrenches] evergreen modules

2011-09-21 Thread toddcory
I had a customer with the same need this spring... and we were able to get them through Evergreen. With the bankruptcy on now, that might be more difficult, but worth contacting them. I am sure they have the modules you need... just getting them to sell them to you (considering the business cir

Re: [RE-wrenches] Heavy batteries

2011-09-18 Thread toddcory
My favorite "technique" is getting the customer to take one of the two handles while I take the other... but in a pinch, yes... I carefully life these alone. They do seem to get heavier as I get older... lol Todd On Sunday, September 18, 2011 10:31am, "William Miller" said: Tod

Re: [RE-wrenches] battery cycle life, US Battery

2011-09-17 Thread toddcory
What about the 2 volt L-16 versions? Has anyone had success with them for larger banks? I work alone and HUPs are too heavy to lift on my own... however 24, L-16's in one series string would be a hell of a battery bank too. Todd On Friday, September 16, 2011 1:03pm, "Ray Walters" said

Re: [RE-wrenches] AC Coupling

2011-09-02 Thread toddcory
I have come to that conclusion as well Jay. 99% of our grid outages happen when we have severe winter weather... this is also when there is NO solar. So the battery based grid tie system sits there day after day operating at only ~85% efficient Then, when the grid goes down you have "X" number

Re: [RE-wrenches] Electric boiler usage?

2011-08-27 Thread toddcory
What was their previous heating source? Calculate the BTU's consumed from that source and convert that to kWh. If it was resistance electric previously look at the winter increase from the summer baseline on the old utility bills. Todd On Saturday, August 27, 2011 6:05am, "Jesse Dahl"

[RE-wrenches] new outback inverter

2011-08-23 Thread toddcory
Wrenches, I posted an absurd price of $13K for the new Outback Radian inverter (GS 8048) a couple of days ago. It turns out that was a retail price for an installed system that I quickly googled. A more accurate price is around $6K. I am looking forward to wrench reviews of this new product.

Re: [RE-wrenches] Large, off grid

2011-08-19 Thread toddcory
Yes... and we finally get the second AC input we have wanted for so long... the price? $13,000.00... wow Todd On Friday, August 19, 2011 2:35pm, "Jeff Oldham" said: Yes it does! From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions __

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

2011-08-12 Thread toddcory
I successfully litigated (with help from the PUC) our local utility company (PP&L) for requiring a $500.00 fee (which violated the CA net metering law) to replace the bi-directional analog meter with a dual register digital one. I had a certification from the analog meter manufacturer stating t

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

2011-08-09 Thread toddcory
If the DC & AC float from the ground, your clients will effectively be insulated from any current path unless they were to somehow touch both conductors simultaneously. Many countries do not reference one of their current carrying conductors to ground. Many people feel this is safer. You would

Re: [RE-wrenches] SIlicon energy modules

2011-07-28 Thread toddcory
So I have to get factory training to install these??? It will be on a ~4/12 comp roof. Todd On Wednesday, July 27, 2011 10:34pm, "Alex Cozine" said: Yes I have installed these modules. Yes they do have a proprietary racking system. To buy these modules I believe the manufacture wa

[RE-wrenches] SIlicon energy modules

2011-07-27 Thread toddcory
Have you installed these Alex? I have specified them for a upcoming, local, grid-tied system here in heavy snow country because there is no frame to peel off from ice dams. The mounting system looks highly complicated/confusing. Can you (or any other list members who have worked with these) sha

[RE-wrenches] pole mounts

2011-07-26 Thread toddcory
Wrenches, Fact or fiction: Adding concrete to the inside of a pole mount pipe makes it stronger. Thanks, Todd Sent from Finest Planet WebMail. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options &

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

2011-06-01 Thread toddcory
Does it make any difference to do as boB recently suggested and inter-connect the strings? So in other words, if you have two parallel strings, what happens if you parallel each battery in one string with the battery in the other string? Has anyone tried this? It might help insure more balance

[RE-wrenches] installs/installers..

2011-05-07 Thread toddcory
Ahem, yes... right here in Mount Shasta. Thanks guys. Todd On Saturday, May 7, 2011 12:34pm, "R Ray Walters" said: Even a bad solar installer isn't going to use cut up extension cords; that install was DIY or a "knowledgable" inebriated neighbor. I lived in the backwoods for many years,

Re: [RE-wrenches] irrigation and direct solar

2011-04-17 Thread toddcory
How about looking into a more efficient pump first? Todd On Saturday, April 16, 2011 8:00pm, "Darryl Thayer" said: That is 480 x 1.73 x40 A x.8 or 26 kW in the peak of the day, five or 6 big trackers, or about 50 kW of fixed array. ( I assure they want 40 amp breaker? I have run 3

Re: [RE-wrenches] Heavy Duty Modules?

2011-04-13 Thread toddcory
Hi Doug, I had a customer's roof mount system break modules this spring after yet another record Mount Shasta snow event. This one brought 8' in 10 days. The situation here was 15 Evergreen 190 watt modules (rated for 80#/sq ft), on a DP&W power rail mount, on a 6/12 pitch, comp roof. Ice da

Re: [RE-wrenches] Slow clocks

2011-04-04 Thread toddcory
I wasn't going to say anything, but electric clocks off-grid? really??? Todd On Monday, April 4, 2011 6:20pm, "Kent Osterberg" said: > Kris, > > Even with generators using an electronic governor, the frequency changes > with load. Also while inverters are stable their frequency is not as > a

Re: [RE-wrenches] Be careful upgrading older Outback products!

2011-02-10 Thread toddcory
One of the MX options for the aux output in the older software options was to switch on and off depending on the amount of current flowing through the unit. This has been removed in the "upgraded" software. I will never upgrade those old MX60s. Todd On Thursday, February 10, 2011 3:41pm, "Je

Re: [RE-wrenches] questions about solar charging 72v UPS

2011-02-10 Thread toddcory
I see the FM60 had a 60 volt option. Why not just use a single one at that battery setting for charging the battery bank? Todd On Thursday, February 10, 2011 9:44am, "Darryl Thayer" said: Hi all I have attached a PDF of a charging scheme using Outback FM controllers. The upper voltage 3

Re: [RE-wrenches] Roofers installing solar = creative, new installation methods

2011-01-28 Thread toddcory
I had a potential customer call me last week saying he had just bought a "bunch of panels and those micro chip things (enphase inverters) so he could get a end of the year tax break". He wanted me to come and install it for him. I told him my work includes a comprehensive energy audit to gather

Re: [RE-wrenches] Barrel Roof Mounting

2011-01-22 Thread toddcory
The old armory building in Ashland, Oregon has a roof like this with PV on it. Do some research and see if you can determine what was done there. From my observation it looked like a classic rail mount system was used. Hope this helps, Todd On Saturday, January 22, 2011 8:40am, "Aaron Mandelko

Re: [RE-wrenches] NABCEP credits and code webinars

2011-01-04 Thread toddcory
Sunwise is having one this Thursday on code approved roof mounts. Todd On Tuesday, January 4, 2011 11:54am, "gary easton" said: Hello Wrenches, Anyone aware of webinars coming up approved for NABCEP's code related continuing education credits? Sent from Finest Planet WebMail.

Re: [RE-wrenches] Reference PV System

2011-01-03 Thread toddcory
Snow removal never seems to be an issue as in the winter the panels are at a steep enough angle to shed any buildup. Around the Mount Shasta (we got 6' in 3 days last winter) the only problem I have encountered is when there is so much snow so that when the slide off the modules builds up a pile

Re: [RE-wrenches] Bobier/Sun Selector LCB-20 & PWM-30 Manuals Needed

2011-01-03 Thread toddcory
Red = positive in White = negative in Orange = positive out Brown = negative out tune in partial sunlight Todd On Sunday, January 2, 2011 9:08pm, "Exeltech" said: Anything you're able to share will be helpful, and more than I have at this time. Post here if of interest to others .. or con

Re: [RE-wrenches] Bobier/Sun Selector LCB-20 & PWM-30 Manuals Needed

2011-01-02 Thread toddcory
I don't have a manual, but I do have one of these on the PV direct pump that operates my SHW system. I can identify the wires if you like. Todd On Sunday, January 2, 2011 5:45pm, "Exeltech" said: > Hello Wrenches, > > I need copies of instruction/user's manuals for a Bobier "Sun Selector > L

Re: [RE-wrenches] NEC 690.74

2010-11-29 Thread toddcory
Did he ask to see the UL sticker on the batteries too? On Monday, November 29, 2010 5:07pm, "Philip Boutelle" said: 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

Re: [RE-wrenches] Battery cell shorting

2010-10-23 Thread toddcory
I have a client right now doing a last ditch heavy equalizing cycle to try to save his 5 year old, 24 volt bank of 8 L-16's. One of the two series strings has a weak cell... so the other string is boiling away. He is charging for 2 hours with 2 hours rest to not overheat the charged cells. Too b

Re: [RE-wrenches] Mounting Enphase when using S-5-PV Clamps

2010-10-20 Thread toddcory
I have the same question, only regarding pole mounts. Todd On Wednesday, October 20, 2010 8:06am, "benn kilburn" said: Mornin, I'm looking at mounting an Enphase M190 system on a standing seam metal roof and was considering using the S-5-PV clamps (as opposed to just the S-5's and L-feet),

Re: [RE-wrenches] Battery capacity testers

2010-10-04 Thread toddcory
When I do a system, the customer is hiring me as the expert. If they want me to do something that won't work well, my reputation is on the line, and so they need to hire someone else. Todd On Monday, October 4, 2010 2:46pm, hol...@sbcglobal.net said:  Since when does the customer make these d

Re: [RE-wrenches] Battery capacity testers

2010-10-04 Thread toddcory
Lead cadmium or lead calcium? Again, I do not have the cycle chart handy, but hopefully James can post that. Todd On Monday, October 4, 2010 8:11am, "Mark Frye" said: Todd, Can you give us a comparison of lead vs lead cadmium? My understanding is that lead cadmium are suited for standby

Re: [RE-wrenches] Battery capacity testers

2010-10-04 Thread toddcory
Perhaps James @ Surrette can chime in about the cost difference. I do not think flooded lead calciums are much more expensive then flooded lead antimony batteries. Todd On Monday, October 4, 2010 8:00am, "jay peltz" said: HI Todd, I agree that the issue is probably dead batteries. In regard

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