[RE-wrenches] To insulate a battery bank DEPENDS on a lot of factors.

By the time I get to the end of a thread my input has been injected by others but here are a couple of things: Thermal mass of the surrounding building is best for regulating battery temps. Consider a vented "Hood" instead of a box. For ventilation purposes, all Lead Acid batteries should be

Re: [RE-wrenches] UL 1741

Hello Glenn, The UL1741 standard uses IEEE1547 which gives the following; (use courier or other fixed width font for best viewing) Voltage range   Clearing time(s) (% of base voltage) ---

[RE-wrenches] UL 1741

Does anyone have the text of UL 1741 and can tell me how much time is allowed for disconnect when loss of utility grid happens? I am thinking between 2-5 cycles? Thanks, Glenn Burt ___ List sponsored by Home Power magazine List Address: RE-wrenche

[RE-wrenches] double insulated wire

For those of in need of that double insulated #10 g. wire to go from the module string to the nearest j-box or combiner, I've found as U.S. manufacturer in Texas-Falcon Wire-that makes it and it's UL listed. Of course, until mod manufacturers start cranking out their products with double insulated

Re: [RE-wrenches] Polaris Connectors

That or equal is mostly what we have used, but a discussion came up recently about how the Polaris were “better” (and a lot more expensive), so trying to find out if they are worth the extra expense. From: North Texas Renewable Energy Inc Sent: Thursday, December 16, 2010 9:46 AM To: RE-wrenche

Re: [RE-wrenches] Polaris Connectors

We use Burndy Unitap clear connectors. Not because of price but because Summit Electric keeps a large display in plain view of the will-call counter. Kind of like candy bars at the supermarket checkout. Jim Duncan North Texas Renewable Energy 486 W.N. Woody Road Azle Texas 76020 NABCEP Certifie

Re: [RE-wrenches] Battery based hydrogen incidents

I can tie this for utter foolishness. Early in my off-grid days, a friend and I split a load of telephone company batteries. His hydro system would regularly boil off electrolyte in its season, so he checked fluid levels a lot. One time he left his flashlight in his cabin. But being a safety-meet

[RE-wrenches] Polaris Connectors

Are many/any of you out there using the Polaris connectors for splicing stranded cables? Pro’s, Con’s? --- Warren Lauzon Northern Arizona Wind & Sun - Electricity from the sun since 1979 Online Solar Store Free Solar Discussi

Re: [RE-wrenches] Battery based hydrogen incidents

I had a very well vented automotive battery explode. The cause was apparently an internal short. The explosion broke the case and splattered me with acid. I was lucky and not injured. I think the internal short rapidly vaporized the acid and the explosion was essentially due to steam press

Re: [RE-wrenches] Battery based hydrogen incidents

I think you are bringing up a very important point here – nearly all of the battery related explosions we have seen or heard of, and nearly all the ones described in all the various posts here recently have one common theme – that the BATTERY exploded. Some or most were probably related to Hydro

[RE-wrenches] Outback PS4 back plate

Hey all - I am looking for a Discontinued item . Outback PS4 back plate with screws [if possible]. Please contact me off list. I am on the road today and back Fri afternoon. I will get back to you. Thanks in advance. Dana Orzel Great Solar Works, Inc E - d...@solarwork.com V - 9

[RE-wrenches] Electrical Test Instrument Safety Recall

Wrenches, If you are using Extech Instruments test gear, this may apply to you: http://www.cpsc.gov/cpscpub/prerel/prhtml11/11067.html Extech Instruments Recalls Digital Clamp and Multimeters due to Electrocution Hazard WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in coopera

Re: [RE-wrenches] Battery based hydrogen incidents

These descriptions of battery explosions certainly drive home the point that one should always always wear protective gear when working on batteries. I have a story that may take the prize for the most foolish behavior yet described (thankfully I wasn't involved until the cleanup stage).