Re: [RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?
Ditto what William said about those micro-switches. They really need to be fine tuned On Wed, Jul 26, 2023 at 4:29 PM William Miller via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Mick: > > Square D offers a set of auxiliary contacts on the double throw switches. > It is ordered by adding a suffix to the model number. Check the footnotes > in the Digest. My supplier at CED can hook you up and arrange a drop > shipment. Eddie Jensen at 805-543-4700. > > Be careful though, these are micro switches that sometimes come > mis-aligned such that they might barely trip when installed and then not > quite trip later on. Exercise the switch and observe the throw to ensure it > is positive. > > Good luck. > > William > > On Wed, Jul 26, 2023 at 3:26 PM Mick Abraham via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with >> easy manual selection between "A" or "B". The output from the manual switch >> would feed AC into a set of XW Pro inverter/chargers. >> >> I seek a 200a manual xfer switch that can also changeover the 12v+ >> generator automation wire with the same handle. Schneider DTU324N is 3 >> phase (solid neutral) so that does get me a third blade but since the >> trigger wire is only a few amps this p/n seems like overkill on size/weight >> and on cost. >> >> The manual switch unit doesn't need to make or break live power because >> folks always tend to shut down any nearby noisy engine before they do any >> switching. We also don't need 100k short circuit current rating because the >> machines can't fault as big as grid power can. Non-fusible seems best b/c >> each genset will have a 200a main breaker. I'd prefer to buy the switch >> inside a NEMA1 enclosure rather than getting a bare switch that would >> require me to mount it into a housing. The project won't be code >> inspected, so thanks in advance for any suggestions. >> >> The Wrench List is the Bomb! >> >> Mick Abraham, Proprietor >> www.abrahamsolar.com >> >> Landline: 970-731-4675 >> Cell phone or for text messaging: 970-946-6584 >> ᐧ >> ___ >> 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 >> >> -- > > William Miller > Miller Solar.com > 805-438-5600 > www.millersolar.com > ___ > 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 > > -- Michael Morningstar Morningstar Electric PO Box 1494 Mount Shasta, CA 96067 530-921-0560 mjmornings...@gmail.com ___ 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
Re: [RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?
Mick: Square D offers a set of auxiliary contacts on the double throw switches. It is ordered by adding a suffix to the model number. Check the footnotes in the Digest. My supplier at CED can hook you up and arrange a drop shipment. Eddie Jensen at 805-543-4700. Be careful though, these are micro switches that sometimes come mis-aligned such that they might barely trip when installed and then not quite trip later on. Exercise the switch and observe the throw to ensure it is positive. Good luck. William On Wed, Jul 26, 2023 at 3:26 PM Mick Abraham via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with > easy manual selection between "A" or "B". The output from the manual switch > would feed AC into a set of XW Pro inverter/chargers. > > I seek a 200a manual xfer switch that can also changeover the 12v+ > generator automation wire with the same handle. Schneider DTU324N is 3 > phase (solid neutral) so that does get me a third blade but since the > trigger wire is only a few amps this p/n seems like overkill on size/weight > and on cost. > > The manual switch unit doesn't need to make or break live power because > folks always tend to shut down any nearby noisy engine before they do any > switching. We also don't need 100k short circuit current rating because the > machines can't fault as big as grid power can. Non-fusible seems best b/c > each genset will have a 200a main breaker. I'd prefer to buy the switch > inside a NEMA1 enclosure rather than getting a bare switch that would > require me to mount it into a housing. The project won't be code > inspected, so thanks in advance for any suggestions. > > The Wrench List is the Bomb! > > Mick Abraham, Proprietor > www.abrahamsolar.com > > Landline: 970-731-4675 > Cell phone or for text messaging: 970-946-6584 > ᐧ > ___ > 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 > > -- William Miller Miller Solar.com 805-438-5600 www.millersolar.com ___ 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
Re: [RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?
You saw the back-up control switch from Schneider? Probably not what you want. https://solar.se.com/us/en/product/backup-control-switch/ Might be good for something else? Whole home or partial home backup made easy. When paired with Schneider Electric XW Pro inverters, the Backup Control Switch (BCS) automatically disconnects from the grid during an outage, allowing the system to provide backup power to the home. Certified to UL standards for USA, The Backup Control Switch is used for larger XW Pro systems requiring up to 200 A rated MID or service entrance installation. Flexible Installation * Whole home backup or subpanel backup with up to 200 A rating * Service entrance rated when installed with a main breaker * Top or bottom entry for grid input * Optional non-backup circuit, making it easy to backup an existing panel and remove select non-critical loads * Configurable for export limiting with integrated meter Reliable * Fast 50 ms transfer from grid connected to backup power operation * Reliable backup power and load starting performance with the compatible XW Pro inverters * Connect up to 4 XW Pro inverters for up to 27 kW continuous and 48 kW peak backup power capability * Outdoor rated enclosure * 10 year limited warranty Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 On 2023-07-26 3:24 pm, Mick Abraham via RE-wrenches wrote: Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with easy manual selection between "A" or "B". The output from the manual switch would feed AC into a set of XW Pro inverter/chargers. I seek a 200a manual xfer switch that can also changeover the 12v+ generator automation wire with the same handle. Schneider DTU324N is 3 phase (solid neutral) so that does get me a third blade but since the trigger wire is only a few amps this p/n seems like overkill on size/weight and on cost. The manual switch unit doesn't need to make or break live power because folks always tend to shut down any nearby noisy engine before they do any switching. We also don't need 100k short circuit current rating because the machines can't fault as big as grid power can. Non-fusible seems best b/c each genset will have a 200a main breaker. I'd prefer to buy the switch inside a NEMA1 enclosure rather than getting a bare switch that would require me to mount it into a housing. The project won't be code inspected, so thanks in advance for any suggestions. The Wrench List is the Bomb! Mick Abraham, Proprietor www.abrahamsolar.com [1] Landline: 970-731-4675 Cell phone or for text messaging: 970-946-6584 ᐧ ___ 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 Links: -- [1] http://www.abrahamsolar.com___ 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
Re: [RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?
I have seen such equipment from generator suppliers, they will be reversing contactors, Look for reversing disconnecting switches I have used them from SQ D and Eaton, and GE. On Wed, Jul 26, 2023 at 5:26 PM Mick Abraham via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with > easy manual selection between "A" or "B". The output from the manual switch > would feed AC into a set of XW Pro inverter/chargers. > > I seek a 200a manual xfer switch that can also changeover the 12v+ > generator automation wire with the same handle. Schneider DTU324N is 3 > phase (solid neutral) so that does get me a third blade but since the > trigger wire is only a few amps this p/n seems like overkill on size/weight > and on cost. > > The manual switch unit doesn't need to make or break live power because > folks always tend to shut down any nearby noisy engine before they do any > switching. We also don't need 100k short circuit current rating because the > machines can't fault as big as grid power can. Non-fusible seems best b/c > each genset will have a 200a main breaker. I'd prefer to buy the switch > inside a NEMA1 enclosure rather than getting a bare switch that would > require me to mount it into a housing. The project won't be code > inspected, so thanks in advance for any suggestions. > > The Wrench List is the Bomb! > > Mick Abraham, Proprietor > www.abrahamsolar.com > > Landline: 970-731-4675 > Cell phone or for text messaging: 970-946-6584 > ᐧ > ___ > 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
[RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?
Hi, Mechanix~ My off grid project needs dual 40kW diesel generators with easy manual selection between "A" or "B". The output from the manual switch would feed AC into a set of XW Pro inverter/chargers. I seek a 200a manual xfer switch that can also changeover the 12v+ generator automation wire with the same handle. Schneider DTU324N is 3 phase (solid neutral) so that does get me a third blade but since the trigger wire is only a few amps this p/n seems like overkill on size/weight and on cost. The manual switch unit doesn't need to make or break live power because folks always tend to shut down any nearby noisy engine before they do any switching. We also don't need 100k short circuit current rating because the machines can't fault as big as grid power can. Non-fusible seems best b/c each genset will have a 200a main breaker. I'd prefer to buy the switch inside a NEMA1 enclosure rather than getting a bare switch that would require me to mount it into a housing. The project won't be code inspected, so thanks in advance for any suggestions. The Wrench List is the Bomb! Mick Abraham, Proprietor www.abrahamsolar.com Landline: 970-731-4675 Cell phone or for text messaging: 970-946-6584 ᐧ ___ 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
