"If your going BIG for power draw look into Magnum Energy ones.. or the Outback models.. they make up to 4000W units that can even do 220VAC..
I'll be running either 2 2000W Xantrex units (in 12v) into 2 separate circuits (I have 1 here now new…"
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Cathy's Discussions
Where to buy batteries
Started this discussion. Last reply by B. Kelly Sep 15, 2012. 4 Replies 0 Likes
Where in Tucson or Phoenix is the best place to buy 6 volt golf cart batteries? I thought I saw a post for a price around $120?Continue
Solar Panel Math
Started this discussion. Last reply by B. Kelly Sep 18, 2012. 9 Replies 0 Likes
I wrote this up a moment ago and I think it went into a black hole (still learning my way around) I have 16 DM 145 panels. If I wire two in series and then in parallel to a similar pair (4 panels…Continue
Battery Calculation
Started this discussion. Last reply by Cathy Jul 30, 2012. 5 Replies 0 Likes
I'm trying to learn how to calculate what I'll need for an off grid system. I'm in Tucson, Az. What would be a reasonable amount of days in a row without sun to use, to determine my batter bank…Continue
Tags: calculation, battery
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Cathy replied to Cathy's discussion Solar Panel Math"Thanks B. & Ray! Well, so far got the panels, charge controller and batteries figured out.
Now for the Inverter, I know I"ll need to go with pure sine wave. We will probably be adding another 8 panels in the near future. Any…"
Renewable Ray replied to Cathy's discussion Solar Panel Math"Gotta agree with B. here Cathy, you guys have gone "Big League" on he panels. You really need to do the same on the controller. Plus it's a reliability thing to. At this kinda amperage you need to do something you can drive away from…"
Cathy replied to Cathy's discussion Solar Panel Math"We have realized that our patio roof is going to throw shadows on about 1-8" of the lower row of 8 panels as the sunsets. We don't mind losing some efficiency/power but are very considered about causing damage inside the…"
B. Kelly replied to Cathy's discussion Solar Panel Math"Well I run the Midnite Classic 150.. handles upto 96 amps.. The price difference of $360 may hurt some based on weather and temp.. I am in SOUTH Texas.. and while most of the time I may only see like 115-118w from a 145w panel in the summer (tested…"
Cathy replied to Cathy's discussion Solar Panel Math"I think I'm starting to understand what you are saying! The Video was very helpful. We can put the Combiner box on the patio in the shade or up on the roof, where itgets up to at least 110+ in the summer with a metal…"
B. Kelly replied to Cathy's discussion Where to buy batteries"NAPA sells some golf cart GC2 batteries for $118 and then core.. $136 each.. there rated for 200 AH..
BatteriesPlus sells them as well and has many locations.. GC125 is made by Rayovac and is 235 AH. shows 4 stores in Tucson..
The other option is…"
Renewable Ray replied to Cathy's discussion Where to buy batteries"Usually they have the 220 AH. Some where between $69.00 and $79.00 plus $9.00 core. That might be higher now since it's been a while since I checked. You might be able to use almost any battery as a trade in, dig around the neighbors yard and…"
B. Kelly replied to Cathy's discussion Solar Panel Math"I used a Square D 100 amp QO load center.. heres the video. its good for upto 48 VDC.. (so 24v panels are a non-issue.)
Use 6 AWG for the jumper wire on the back bone to link all 6 connections together.. (I used 8 AWG originally and then changed…"
Cathy replied to Cathy's discussion Where to buy batteries"I saw the posts for around $75? Is there a specific one to look for?"
Cathy replied to Cathy's discussion Solar Panel Math"Panels - 2 rows of 8 (approx 20 ft each row) Combiner box can be set at one end or just below in center. So very close for my thinking. From there, straight down from roof (1 story) to patio and Fuse Box to house (20 ft ?). …"
B. Kelly replied to Cathy's discussion Solar Panel Math"2 panels on a Y connector I'm guessing then having another 2 tie into those two??
Then having 4 parallel sets of those??
1 pair in series would be 24v (well 36-37vdc) .. but yes..
1 pair in series would be 8 amps for that set..
Your numbers add…"
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DM Solar 145 Watt Panel Owners Group
With so many of our members buying [or will be buying] these 145 watt panels it only seems fitting that we have a group just for them.See More
Cathy replied to Cathy's discussion Battery Calculation"Thank you Bill K & Dale for responding. Well, this is a learning process, just hate being on the upside of the learning curve. We've done a lot to cut costs, but kwh is stilway too high"
Cathy's Blog
145 Watt When Next Available?
Posted on June 28, 2012 at 9:00am 2 Comments 0 Likes
I am new to this group and I have a question. I just received a notice that the 145 Watt will probably go up for sale on Amazon.com Friday morning. Does anyone have any idea of when they will be offered again after that? I also heard that there is a $80 coupon available occasionally. Will that be offered again? How can I keep track of these things? I know I can watch the posts, but we are trying…
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