[RE-wrenches] Up for a 1-Line Riddle?
I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Trojan L-16 SG Readings- Did Something Change?
We are wondering if anybody knows when the Trojan L-16RE-B batteries went from full SG readings of 1.265 (after an 18 month plate forming period) to 1.280 that they now state on the data sheet. We have been having customers use 1.250 as a full reading which would gradually increase over time to 1.265 and that might take/might not be seen for 18 months. Now we see that a full reading should be 1.280 and maybe still a plate forming period or maybe not? Does anyone know the date code that we can use with customers to see what they should be looking for (should have been somewhere between 2010 and 2012)? I have this question out to Trojan as well, but haven't received confirmation and wanted to know what data you all were seeing as well. Thanks- Sequoya Cross 1589 Rapid Lightning Creek Rd Sandpoint, Idaho 83864 http://www.backwoodssolar.com/ www.backwoodssolar.com Phone(208)263-4290 Fax (888) 273-8279 We are an online and catalog business that caters to off-grid and grid-tie customers, with technicians that own and operate a variety of renewable energy systems using the products that we sell. We take great pride in getting to know our products so that we can recommend the best for our customers. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Up for a 1-Line Riddle?
Ahh yes, the old combine strings before landing on a fused DC input terminal trick. Sure to blow the fuse the first sunny day. This is why SMA created their fuse-bypass DC input terminal. I take it the installer was not aware of this... For a brighter energy future, Andrew Truitt NABCEP Certified PV Installer™ (ID# 032407-66) Principal Truitt Renewable Energy Consulting (202) 486-7507 http://www.linkedin.com/pub/andrew-truitt/8/622/713 Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless! ~William McDonough On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski ja...@fafcosolar.comwrote: I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Up for a 1-Line Riddle?
I've seen that one a lot, too. And not to quibble, but the 1-line depicts this correctly (no inline fuse shown in the inverter DC disconnect box), though there should be a note making this more explicit. Speaking of sunny days turning off the system, how about the 3 30A inverter breakers' combined feed going into a 55A breaker. Also... a 55A breaker? Really? I guess the designer wanted to leave a little headroom to avoid scaring the 60A disconnect. DKC On 2012/8/30 14:35, Andrew Truitt wrote: Ahh yes, the old combine strings before landing on a fused DC input terminal trick. Sure to blow the fuse the first sunny day. This is why SMA created their fuse-bypass DC input terminal. I take it the installer was not aware of this... For a brighter energy future, Andrew Truitt NABCEP Certified PV Installer™ (ID# 032407-66) Principal Truitt Renewable Energy Consulting (202) 486-7507 tel:%28202%29%20486-7507 http://www.linkedin.com/pub/andrew-truitt/8/622/713 Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless! ~William McDonough On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski ja...@fafcosolar.com mailto:ja...@fafcosolar.com wrote: I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org mailto:RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org http://www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Up for a 1-Line Riddle?
I'm assuming it's a balanced 3-phase interconnection, which fits with the reported phase current of 42 A: (3 x 5000 W) / 208 V / 1.73 = 41.7 A Or more simply: 24 A per inverter x 1.73 = 41.5 A However, no one reviewing a single-line should have to guess about the service type On Aug 30, 2012, at 3:12 PM, Dave Click wrote: I've seen that one a lot, too. And not to quibble, but the 1-line depicts this correctly (no inline fuse shown in the inverter DC disconnect box), though there should be a note making this more explicit. Speaking of sunny days turning off the system, how about the 3 30A inverter breakers' combined feed going into a 55A breaker. Also... a 55A breaker? Really? I guess the designer wanted to leave a little headroom to avoid scaring the 60A disconnect. DKC On 2012/8/30 14:35, Andrew Truitt wrote: Ahh yes, the old combine strings before landing on a fused DC input terminal trick. Sure to blow the fuse the first sunny day. This is why SMA created their fuse-bypass DC input terminal. I take it the installer was not aware of this... For a brighter energy future, Andrew Truitt NABCEP Certified PV Installer™ (ID# 032407-66) Principal Truitt Renewable Energy Consulting (202) 486-7507 tel:%28202%29%20486-7507 http://www.linkedin.com/pub/andrew-truitt/8/622/713 Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless! ~William McDonough On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski ja...@fafcosolar.com mailto:ja...@fafcosolar.com wrote: I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org mailto:RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org http://www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Up for a 1-Line Riddle?
Thanks David, I was in residential mode and just saw the 240V listed in the OCPD table! On 2012/8/30 16:47, David Brearley wrote: I'm assuming it's a balanced 3-phase interconnection, which fits with the reported phase current of 42 A: (3 x 5000 W) / 208 V / 1.73 = 41.7 A Or more simply: 24 A per inverter x 1.73 = 41.5 A However, no one reviewing a single-line should have to guess about the service type On Aug 30, 2012, at 3:12 PM, Dave Click wrote: I've seen that one a lot, too. And not to quibble, but the 1-line depicts this correctly (no inline fuse shown in the inverter DC disconnect box), though there should be a note making this more explicit. Speaking of sunny days turning off the system, how about the 3 30A inverter breakers' combined feed going into a 55A breaker. Also... a 55A breaker? Really? I guess the designer wanted to leave a little headroom to avoid scaring the 60A disconnect. DKC On 2012/8/30 14:35, Andrew Truitt wrote: Ahh yes, the old combine strings before landing on a fused DC input terminal trick. Sure to blow the fuse the first sunny day. This is why SMA created their fuse-bypass DC input terminal. I take it the installer was not aware of this... For a brighter energy future, Andrew Truitt NABCEP Certified PV Installer™ (ID# 032407-66) Principal Truitt Renewable Energy Consulting (202) 486-7507 tel:%28202%29%20486-7507 http://www.linkedin.com/pub/andrew-truitt/8/622/713 Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless! ~William McDonough On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski ja...@fafcosolar.com mailto:ja...@fafcosolar.com wrote: I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org mailto:RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org http://www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Up for a 1-Line Riddle?
Yep... the owner wondered why they fuses didn't blow earlier. I had to explain that the panels are at 5% tilt and here in SW FL the sun rises to 85 degrees above the horizon come summer. There was never a problem in the winter and spring! The 7.69 Imp per string should have been the obvious tip-off. 2 x 7.69 = 15A. 36A max on the combined input terminal is a nice feature. As soon as I saw the 30A discos next to the inverters I wondered why they were landing on the fused inputs. Without the 1-line in my hand, that was a good tip-off, too. Jason Szumlanski Fafco Solar On Thu, Aug 30, 2012 at 2:35 PM, Andrew Truitt atru...@gmail.com wrote: Ahh yes, the old combine strings before landing on a fused DC input terminal trick. Sure to blow the fuse the first sunny day. This is why SMA created their fuse-bypass DC input terminal. I take it the installer was not aware of this... For a brighter energy future, Andrew Truitt NABCEP Certified PV Installer™ (ID# 032407-66) Principal Truitt Renewable Energy Consulting (202) 486-7507 http://www.linkedin.com/pub/andrew-truitt/8/622/713 On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski ja...@fafcosolar.comwrote: I was sent to look at another contractor's work, and found three SB5000 inverters with blown string input fuses. I was able to determine the reason pretty quickly, and was later sent the original 1-Line, which was installed per the drawings. The 1-Line came from a leading system integrator who shall remain nameless. See anything wrong? https://www.sugarsync.com/pf/D6539806_8669786_010829 Just goes to show you - the contractor needs to take responsibility and verify the specifications are correct, safe, and code compliant. Jason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
