Hi Bill Looks good to me!
I like the idea of all the copper/connections behind a plexiglass dead front. Makes a lot of sense and seems safe. I’m wondering what your inspectors say about it or how you convince them? It’s definitely got me thinking about doing a job I have in mind with buss bars and plexi dead front vs 4/0 cable. Jay > On Sep 21, 2023, at 9:25 PM, frenergy via RE-wrenches > <re-wrenches@lists.re-wrenches.org> wrote: > > Jay, > > I sent a diagram of my proposed arrangement and bus sizes to > SimpliPhi prior to installation, which they approved. The buses (copper > 11000) running across the terminals are 1 1/2" X 3/16", they have a rating of > 480 amps. The "bridge" buses are 2" X 3/16" with a rating of 610 amps. The > greatest possible charge-discharge on this pack will be ~327 amps which is > only 16 amps per battery. Typically the max supply is 11.5 amps, loads are > less (1, 8048 Radian). The inverter cables are pairs ( +& -) of 4/0. Picture > attached. > > I'm never going to reach the 30 degree C. rise in temp with > these amperages. The reasoning was the amps moving to each battery is so > small that even though the batteries at the ends of the buses have more bus > to move through, they are so over-sized that there would be a negligible > difference in voltage, small enough for the BMS to handle. > > I guess the answer to your question is send your proposal to the > battery manufacturer, there are charts all over the internet for bus > ampacities. The final touch on the way for this installation is a full sheet > of plexiglass mounted on the front of the pack with multiple stand-offs. > BTW, the structural is #1, 4 X 6" doug fir, its a 76 Kwhr pack to 100% DOD. > We do a lot of car charging around here. > > Bill > > Feather River Solar Electric > Bill Battagin, Owner > 4291 Nelson St.(shipping) > 5575 Genesee Rd. (USPS, UPS) > Taylorsville, CA 95983 > 530.284.1925 Office/ 530.258.1641 Cell > CA Lic 874049 > Solar powered since 1982 > Home of the Sunny side up > > > -- > This email has been checked for viruses by Avast antivirus software. > www.avast.com > <SimpliPhi's installed 2-19-23 (1).JPG> > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
