Re: [RE-wrenches] Spam Complaints

Not sure if we're talking about the same thing... but a friend of mine's computer got "hacked" and some malware (or something), sent spam to everyone on her address lists all addressed from her... they're out there.. dbDan BrownPresidentFoxfire Energy Corp.Renewable Energy

Re: [RE-wrenches] 2011 code and roof discos

Bill, On large arrays with combiners and sub combiners, will a disconnect be required on both the inverter and array side? The fuses will still be energized from the inverter side when the array is turned off, from other string sets connected to the inverter. . Drake At 09:38 PM

Re: [RE-wrenches] discharging Rolls batteries

More important than loss of capacity at low temps, (at least in my world), is the fact that battery freeze points rise considerably -- with a reduced State of charge... So you get a sort of double whammy... not only do you get less capacity, but they freeze easier.Dan BrownPresidentFoxfire Energy

[RE-wrenches] Investment Tax Credit

I have two questions about the Investment tax Credit (ITC). (1) I understand that it has an expiration date of December 31, 2010. If this is true, is it probable that it will be extended for another year or more? Asked another way, what are the chances that it will be allowed to expire?

Re: [RE-wrenches] discharging Rolls batteries

Thanks, Bruce, I have lived with batteries for thirty years so I do know some of the basic things but for most of that time I used secondhand batteries. The last couple of years using expensive new ones I find that they often perform less well. I would like to tap into the enormous

[RE-wrenches] Fwd: Walt Ratterman missing in Haiti Earthquake

Hi gang. This from Christopher Freitas. One of our comrades is in need of your good thoughts, and the country where he has been working could use your help. I do not want to turn this list into a fundraising venue, but please contact me off list for some suggestions. Walt Ratterman was

Re: [RE-wrenches] discharging Rolls batteries

Hugh, Sorry if you found my response limited but have been traveling since early this am and don't have all information at hand, at the moment. Regarding temperature effects on capacity, earlier responses are spot on as the lower capacity is totally as a result of slower reaction times as a

Re: [RE-wrenches] discharging Rolls batteries

Hi Dan, Good point. A quick chart on freezing temperatures vs SG; Specific Gravity (cor. to 80° F/26° C)Freezing Temp 1.280 -92° F (-69° C) 1.265-72.3° F (-57° C) 1.250-62° F (-52° C) 1.200-16° F (-27° C) 1.150+5° F (-15° C) 1.100+19° F (-7.2° C) Regards, Jamie

Re: [RE-wrenches] discharging Rolls batteries

Hi Jamie and Dan, Thanks for keeping up this thread! And sorry for being impatient. Now, if the capacity 'loss' is simply due to reduced performance, is it logical to say that one can push the battery to lower voltages under low temperature conditions without actually cycling it harder or

Re: [RE-wrenches] discharging Rolls batteries

Hi Hugh, Based on your earlier number - regardless of temp effects - you were only removing ~25% of capacity. You will need to lower your low voltage cut off to improve performance. Remember, as batteries cool actual capacity is reduced, so if 200AH is 50% @ 25C it is significantly more

[RE-wrenches] Investment Tax Credit SEIA

Hi Peter, 1) Only the DOT grant alternative to the ITC is due to expire. SEIA is pushing for an extension. I couldn't be more impressed by this organization and would strongly encourage everyone in this industry to join. There are varying levels of membership and it costs some money

Re: [RE-wrenches] High amp charge to desulphate

Just a follow-up on this. I have able to get the batteries to accept a higher and higher amp charge and the hydrometer indicates recovery is taking place. However, in the last 15 hour session of charging (this is being done in an unmonitored location overnight) the batteries off- gassed