Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
WINDY Dancoff taught me pressure times flow was power, pressure times volume was energy, On Oct 29, 2017 10:47 AM, "Dana" wrote: > That’s where I was confused the septic designer said only 10% more. It's > not just flow it is this ridiculous excess pressure they require > > > > Dana Orzel Great Solar Works, Inc. > 208.721.7003 d...@solarwork.com > Idaho Contractor - # 028765 Idaho PV # 028374 > NABCEP # 051112-136 www.solarwork.biz > "Responsible Technologies for Responsible People since 1988" > Please consider the environment before printing this email. > > > -Original Message- > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On > Behalf Of Darryl Thayer > Sent: Sunday, October 29, 2017 7:40 AM > To: newrewrenches > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > But the question you asked as to which uses more energy, i expect they use > tbe same or close to the same, the 1/2 hp runs 2x longer. > > On Oct 29, 2017 6:24 AM, "Chris Mason" > wrote: > > If you can get the Class rating of the motor, it will tell you a lot about > the start current requirements of the pump. > > On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer > wrote: > > > Hi, Dana, I know you have a different situation using a sewage ejector > > (grinder pump) but I have a customer that has a 1/2 HP well pump. I > > do > not > > know the drawdown, I think it is 60 feet. It runs from an Outback VFX > > 3648, and a 4000 Watt autotransformer standard across the line starter. > It > > has never failed to start. Nor does it "blink the lights", (running > > since > > 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank > > operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the > peak > > seems to be about 3x the running load or 1200 to1500 Watts lasting > > less than 1 second. In providing a family of two adults, the well > > pump is not > a > > dominating load. On the other hand, I had a customer with a 1.5 HP > > pump that I could not reliably start on a similar setup with a single FX > 3548. > > The Radian is, of course, a much bigger animal. > > > > On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < > > offgridso...@sti.net> wrote: > > > > > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem > > > if > it > > > does not soft start. It will cause dimmed LED's to flicker and just > > > the surges that really are avoidable. Use soft start! There is not a > > > reason these days to prove that a Radian or XW will start a motor > > > that bangs > the > > > inverter to start. The only case I make for large old pump tech like > > these > > > is if it is for a fire suppression pump, in addition to a nice 3/4 > > > HP Grundfos home water pump. > > > > > > Dave Angelini Offgrid Solar > > > "we go where powerlines don't" > > > http://members.sti.net/offgridsolar/ > > > e-mail offgridso...@sti.net > > > text 209 813 0060 > > > > > > > > > > Really good to hear & thanks Chris. > > > > I just installed this system at our new home that we will be > > > > showing > > as a > > > > demonstration home. I come from the late '80s days of PV and a 1 > > > > HP > > pump > > > > was a major no-no back when. > > > > *Windy passed along a soft start suggestion & I was going to put a > time > > > > clock turning on from 10AM-2PM every day to utilize a fuller bank. > > > > I > > will > > > > look at the SOC option on the Radian, but it is 200+' away from > > > > the > > > septic > > > > controller and conduit is in the ground. > > > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in > > > > a > n-s > > > > canyon that limits the PV collection to 5 hours on a December day, > that > > > so > > > > far even running a 3/4 HP air compressor all day/every day-7 days > > > > a > > week > > > > has never dropped at night more than 5%. > > > > > > > > > > > > > > > Dana Orzel Great Solar Works, Inc. > > > > 208.721.7003 d...@solarwork.com > > > > Idaho Contractor - # 028765 Idaho PV # 028374 > > > > NABCEP # 051112-136 www.solarwork.biz > > > > "Responsible Technologies for Responsible People since 1988" > > > > ï Please consider the environment before printing this email. > > > > > > > > > > > > -Original Message- > > > > From: RE-wrenches > > > > [mailto:re-wrenches-boun...@lists.re-wrenches.org] > > On > > > > Behalf Of Chris Mason > > > > Sent: Friday, October 27, 2017 5:51 AM > > > > To: RE-wrenches > > > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > > > > > > > What's the problem with the 1H pump you anticipate? We live on a > > > > 8KW Radian and it's very robust. We have load management relay > > > > system
Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
That’s where I was confused the septic designer said only 10% more. It's not just flow it is this ridiculous excess pressure they require Dana Orzel Great Solar Works, Inc. 208.721.7003 d...@solarwork.com Idaho Contractor - # 028765 Idaho PV # 028374 NABCEP # 051112-136 www.solarwork.biz "Responsible Technologies for Responsible People since 1988" Please consider the environment before printing this email. -Original Message- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Darryl Thayer Sent: Sunday, October 29, 2017 7:40 AM To: newrewrenches Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps But the question you asked as to which uses more energy, i expect they use tbe same or close to the same, the 1/2 hp runs 2x longer. On Oct 29, 2017 6:24 AM, "Chris Mason" wrote: If you can get the Class rating of the motor, it will tell you a lot about the start current requirements of the pump. On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer wrote: > Hi, Dana, I know you have a different situation using a sewage ejector > (grinder pump) but I have a customer that has a 1/2 HP well pump. I > do not > know the drawdown, I think it is 60 feet. It runs from an Outback VFX > 3648, and a 4000 Watt autotransformer standard across the line starter. It > has never failed to start. Nor does it "blink the lights", (running > since > 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank > operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the peak > seems to be about 3x the running load or 1200 to1500 Watts lasting > less than 1 second. In providing a family of two adults, the well > pump is not a > dominating load. On the other hand, I had a customer with a 1.5 HP > pump that I could not reliably start on a similar setup with a single FX 3548. > The Radian is, of course, a much bigger animal. > > On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < > offgridso...@sti.net> wrote: > > > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem > > if it > > does not soft start. It will cause dimmed LED's to flicker and just > > the surges that really are avoidable. Use soft start! There is not a > > reason these days to prove that a Radian or XW will start a motor > > that bangs the > > inverter to start. The only case I make for large old pump tech like > these > > is if it is for a fire suppression pump, in addition to a nice 3/4 > > HP Grundfos home water pump. > > > > Dave Angelini Offgrid Solar > > "we go where powerlines don't" > > http://members.sti.net/offgridsolar/ > > e-mail offgridso...@sti.net > > text 209 813 0060 > > > > > > > Really good to hear & thanks Chris. > > > I just installed this system at our new home that we will be > > > showing > as a > > > demonstration home. I come from the late '80s days of PV and a 1 > > > HP > pump > > > was a major no-no back when. > > > *Windy passed along a soft start suggestion & I was going to put a time > > > clock turning on from 10AM-2PM every day to utilize a fuller bank. > > > I > will > > > look at the SOC option on the Radian, but it is 200+' away from > > > the > > septic > > > controller and conduit is in the ground. > > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in > > > a n-s > > > canyon that limits the PV collection to 5 hours on a December day, that > > so > > > far even running a 3/4 HP air compressor all day/every day-7 days > > > a > week > > > has never dropped at night more than 5%. > > > > > > > > > > > Dana Orzel Great Solar Works, Inc. > > > 208.721.7003 d...@solarwork.com > > > Idaho Contractor - # 028765 Idaho PV # 028374 > > > NABCEP # 051112-136 www.solarwork.biz > > > "Responsible Technologies for Responsible People since 1988" > > > ï Please consider the environment before printing this email. > > > > > > > > > -Original Message- > > > From: RE-wrenches > > > [mailto:re-wrenches-boun...@lists.re-wrenches.org] > On > > > Behalf Of Chris Mason > > > Sent: Friday, October 27, 2017 5:51 AM > > > To: RE-wrenches > > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > > > > > What's the problem with the 1H pump you anticipate? We live on a > > > 8KW Radian and it's very robust. We have load management relay > > > system to handle the dryer, it's only allowed to work above 95% state of > > > charge. > > > Since your lift station has range, i.e., it doesn't have to work > > > every minute of the day, you can control it so it works only > > > during a SOC > range > > > or Time of Day range. You can also turn off other loads so there > > > is > > enough > > >
Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
My comment was blinking a "dimmed LED" the benchmark for testing this. Most lighting does very well when it has the full 120vac on it. The blink is pretty fast and does not always happen in my Outback and Schneider users (which is weird to me). Typically it is a refrigerator start on a 50% or less dimmed light circuit. Many people do not notice it but the ones that do let me know! Easily cured with an inverter based refrigerator or the fantastic Panasonic inverter based microwave oven at Costco for a BOU. The BOU is the same as BMU and they are the units of monetary value of $100. Basic Offgrid Unit and Basic Marine Unit:) I agree that the energy is about the same on the different pumps. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 Dave Darryl ThayerDave > But the question you asked as to which uses more energy, i expect they use > tbe same or close to the same, the 1/2 hp runs 2x longer. > > On Oct 29, 2017 6:24 AM, "Chris Mason" > wrote: > > If you can get the Class rating of the motor, it will tell you a lot about > the start current requirements of the pump. > > On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer > wrote: > >> Hi, Dana, I know you have a different situation using a sewage ejector >> (grinder pump) but I have a customer that has a 1/2 HP well pump. I do > not >> know the drawdown, I think it is 60 feet. It runs from an Outback VFX >> 3648, and a 4000 Watt autotransformer standard across the line starter. > It >> has never failed to start. Nor does it "blink the lights", (running >> since >> 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank >> operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the > peak >> seems to be about 3x the running load or 1200 to1500 Watts lasting less >> than 1 second. In providing a family of two adults, the well pump is >> not > a >> dominating load. On the other hand, I had a customer with a 1.5 HP pump >> that I could not reliably start on a similar setup with a single FX >> 3548. >> The Radian is, of course, a much bigger animal. >> >> On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < >> offgridso...@sti.net> wrote: >> >> > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem if > it >> > does not soft start. It will cause dimmed LED's to flicker and just >> the >> > surges that really are avoidable. Use soft start! There is not a >> reason >> > these days to prove that a Radian or XW will start a motor that bangs > the >> > inverter to start. The only case I make for large old pump tech like >> these >> > is if it is for a fire suppression pump, in addition to a nice 3/4 HP >> > Grundfos home water pump. >> > >> > Dave Angelini Offgrid Solar >> > "we go where powerlines don't" >> > http://members.sti.net/offgridsolar/ >> > e-mail offgridso...@sti.net >> > text 209 813 0060 >> > >> > >> > > Really good to hear & thanks Chris. >> > > I just installed this system at our new home that we will be showing >> as a >> > > demonstration home. I come from the late '80s days of PV and a 1 HP >> pump >> > > was a major no-no back when. >> > > *Windy passed along a soft start suggestion & I was going to put a > time >> > > clock turning on from 10AM-2PM every day to utilize a fuller bank. I >> will >> > > look at the SOC option on the Radian, but it is 200+' away from the >> > septic >> > > controller and conduit is in the ground. >> > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in a > n-s >> > > canyon that limits the PV collection to 5 hours on a December day, > that >> > so >> > > far even running a 3/4 HP air compressor all day/every day-7 days a >> week >> > > has never dropped at night more than 5%. >> > > >> > > >> > >> > > Dana Orzel Great Solar Works, Inc. >> > > 208.721.7003 d...@solarwork.com >> > > Idaho Contractor - # 028765 Idaho PV # 028374 >> > > NABCEP # 051112-136 www.solarwork.biz >> > > "Responsible Technologies for Responsible People since 1988" >> > > ï Please consider the environment before printing this email. >> > > >> > > >> > > -Original Message- >> > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] >> On >> > > Behalf Of Chris Mason >> > > Sent: Friday, October 27, 2017 5:51 AM >> > > To: RE-wrenches >> > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps >> > > >> > > What's the problem with the 1H pump you anticipate? We live on a 8KW >> > > Radian and it's very robust. We have load management relay system to >> > > handle the dryer, it's only allowed to work above 95% state of >> charge. >> > > Since your lift station has range, i.e., it doesn't have to work >> every >> > > minute of the day, you can control it so it works only during a SOC >> range >> > >
Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
But the question you asked as to which uses more energy, i expect they use tbe same or close to the same, the 1/2 hp runs 2x longer. On Oct 29, 2017 6:24 AM, "Chris Mason" wrote: If you can get the Class rating of the motor, it will tell you a lot about the start current requirements of the pump. On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer wrote: > Hi, Dana, I know you have a different situation using a sewage ejector > (grinder pump) but I have a customer that has a 1/2 HP well pump. I do not > know the drawdown, I think it is 60 feet. It runs from an Outback VFX > 3648, and a 4000 Watt autotransformer standard across the line starter. It > has never failed to start. Nor does it "blink the lights", (running since > 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank > operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the peak > seems to be about 3x the running load or 1200 to1500 Watts lasting less > than 1 second. In providing a family of two adults, the well pump is not a > dominating load. On the other hand, I had a customer with a 1.5 HP pump > that I could not reliably start on a similar setup with a single FX 3548. > The Radian is, of course, a much bigger animal. > > On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < > offgridso...@sti.net> wrote: > > > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem if it > > does not soft start. It will cause dimmed LED's to flicker and just the > > surges that really are avoidable. Use soft start! There is not a reason > > these days to prove that a Radian or XW will start a motor that bangs the > > inverter to start. The only case I make for large old pump tech like > these > > is if it is for a fire suppression pump, in addition to a nice 3/4 HP > > Grundfos home water pump. > > > > Dave Angelini Offgrid Solar > > "we go where powerlines don't" > > http://members.sti.net/offgridsolar/ > > e-mail offgridso...@sti.net > > text 209 813 0060 > > > > > > > Really good to hear & thanks Chris. > > > I just installed this system at our new home that we will be showing > as a > > > demonstration home. I come from the late '80s days of PV and a 1 HP > pump > > > was a major no-no back when. > > > *Windy passed along a soft start suggestion & I was going to put a time > > > clock turning on from 10AM-2PM every day to utilize a fuller bank. I > will > > > look at the SOC option on the Radian, but it is 200+' away from the > > septic > > > controller and conduit is in the ground. > > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in a n-s > > > canyon that limits the PV collection to 5 hours on a December day, that > > so > > > far even running a 3/4 HP air compressor all day/every day-7 days a > week > > > has never dropped at night more than 5%. > > > > > > > > > > > Dana Orzel Great Solar Works, Inc. > > > 208.721.7003 d...@solarwork.com > > > Idaho Contractor - # 028765 Idaho PV # 028374 > > > NABCEP # 051112-136 www.solarwork.biz > > > "Responsible Technologies for Responsible People since 1988" > > > ï Please consider the environment before printing this email. > > > > > > > > > -Original Message- > > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] > On > > > Behalf Of Chris Mason > > > Sent: Friday, October 27, 2017 5:51 AM > > > To: RE-wrenches > > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > > > > > What's the problem with the 1H pump you anticipate? We live on a 8KW > > > Radian and it's very robust. We have load management relay system to > > > handle the dryer, it's only allowed to work above 95% state of charge. > > > Since your lift station has range, i.e., it doesn't have to work every > > > minute of the day, you can control it so it works only during a SOC > range > > > or Time of Day range. You can also turn off other loads so there is > > enough > > > power. If you run the lift pump during the night, there is less chance > of > > > a convection oven running at that time. Or mid morning when everyone is > > at > > > work. Having time control or SOC control is very handy. > > > > > > On Wed, Oct 25, 2017 at 9:37 PM, Dana wrote: > > > > > >> Ok all you whiz kids, bozos, & bolos: > > >> > > >> > > >> > > >> If I have a septic lift pump [off grid ouch] at 1HP/240 vac/8-amps to > > >> meet all the usual state required overkill in septic design & a ½ > > >> HP/240 vac/4.9-amp pump would do the same job but it will take 10% > > >> more time to dose 800 gallons. > > >> > > >> Powered by an 8 KW Outback Radian inverter. > > >> > > >> From a load point of view and a 240-volt 3 phase wild AC well pump > > >> limiting the overall surge and general wattage is the smartest move, > > >> but; Which pump will use less overall power? We are using 240 volt to > > >> util
[RE-wrenches] Comment on Wattage 1/2 HP vs 1HP septic pumps
Wow must be nice to be limited to 5 hours >> “canyon that limits the PV collection to 5 hours on a December day” We’re going into the time of where we get less than an hour !! Just had to comment, Bob > On Oct 29, 2017, at 4:29 AM, Darryl Thayer wrote: > > canyon that limits the PV collection to 5 hours on a December day, that ___ List sponsored by Redwood Alliance 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 List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
If you can get the Class rating of the motor, it will tell you a lot about the start current requirements of the pump. On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer wrote: > Hi, Dana, I know you have a different situation using a sewage ejector > (grinder pump) but I have a customer that has a 1/2 HP well pump. I do not > know the drawdown, I think it is 60 feet. It runs from an Outback VFX > 3648, and a 4000 Watt autotransformer standard across the line starter. It > has never failed to start. Nor does it "blink the lights", (running since > 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank > operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the peak > seems to be about 3x the running load or 1200 to1500 Watts lasting less > than 1 second. In providing a family of two adults, the well pump is not a > dominating load. On the other hand, I had a customer with a 1.5 HP pump > that I could not reliably start on a similar setup with a single FX 3548. > The Radian is, of course, a much bigger animal. > > On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < > offgridso...@sti.net> wrote: > > > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem if it > > does not soft start. It will cause dimmed LED's to flicker and just the > > surges that really are avoidable. Use soft start! There is not a reason > > these days to prove that a Radian or XW will start a motor that bangs the > > inverter to start. The only case I make for large old pump tech like > these > > is if it is for a fire suppression pump, in addition to a nice 3/4 HP > > Grundfos home water pump. > > > > Dave Angelini Offgrid Solar > > "we go where powerlines don't" > > http://members.sti.net/offgridsolar/ > > e-mail offgridso...@sti.net > > text 209 813 0060 > > > > > > > Really good to hear & thanks Chris. > > > I just installed this system at our new home that we will be showing > as a > > > demonstration home. I come from the late '80s days of PV and a 1 HP > pump > > > was a major no-no back when. > > > *Windy passed along a soft start suggestion & I was going to put a time > > > clock turning on from 10AM-2PM every day to utilize a fuller bank. I > will > > > look at the SOC option on the Radian, but it is 200+' away from the > > septic > > > controller and conduit is in the ground. > > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in a n-s > > > canyon that limits the PV collection to 5 hours on a December day, that > > so > > > far even running a 3/4 HP air compressor all day/every day-7 days a > week > > > has never dropped at night more than 5%. > > > > > > > > > > > Dana Orzel Great Solar Works, Inc. > > > 208.721.7003 d...@solarwork.com > > > Idaho Contractor - # 028765 Idaho PV # 028374 > > > NABCEP # 051112-136 www.solarwork.biz > > > "Responsible Technologies for Responsible People since 1988" > > > ï Please consider the environment before printing this email. > > > > > > > > > -Original Message- > > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] > On > > > Behalf Of Chris Mason > > > Sent: Friday, October 27, 2017 5:51 AM > > > To: RE-wrenches > > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > > > > > What's the problem with the 1H pump you anticipate? We live on a 8KW > > > Radian and it's very robust. We have load management relay system to > > > handle the dryer, it's only allowed to work above 95% state of charge. > > > Since your lift station has range, i.e., it doesn't have to work every > > > minute of the day, you can control it so it works only during a SOC > range > > > or Time of Day range. You can also turn off other loads so there is > > enough > > > power. If you run the lift pump during the night, there is less chance > of > > > a convection oven running at that time. Or mid morning when everyone is > > at > > > work. Having time control or SOC control is very handy. > > > > > > On Wed, Oct 25, 2017 at 9:37 PM, Dana wrote: > > > > > >> Ok all you whiz kids, bozos, & bolos: > > >> > > >> > > >> > > >> If I have a septic lift pump [off grid ouch] at 1HP/240 vac/8-amps to > > >> meet all the usual state required overkill in septic design & a ½ > > >> HP/240 vac/4.9-amp pump would do the same job but it will take 10% > > >> more time to dose 800 gallons. > > >> > > >> Powered by an 8 KW Outback Radian inverter. > > >> > > >> From a load point of view and a 240-volt 3 phase wild AC well pump > > >> limiting the overall surge and general wattage is the smartest move, > > >> but; Which pump will use less overall power? We are using 240 volt to > > >> utilize both inverters and drop the load on either half of the Radian > > >> inverter. > > >> > > >> Is there a smarter lift pump to use? ECM motor? Permanent magnet? > > >> > > >> > >
Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
Hi, Dana, I know you have a different situation using a sewage ejector (grinder pump) but I have a customer that has a 1/2 HP well pump. I do not know the drawdown, I think it is 60 feet. It runs from an Outback VFX 3648, and a 4000 Watt autotransformer standard across the line starter. It has never failed to start. Nor does it "blink the lights", (running since 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank operating from 40 to 60 PSI. Using Egauge on the 10 Minute scale, the peak seems to be about 3x the running load or 1200 to1500 Watts lasting less than 1 second. In providing a family of two adults, the well pump is not a dominating load. On the other hand, I had a customer with a 1.5 HP pump that I could not reliably start on a similar setup with a single FX 3548. The Radian is, of course, a much bigger animal. On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar < offgridso...@sti.net> wrote: > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem if it > does not soft start. It will cause dimmed LED's to flicker and just the > surges that really are avoidable. Use soft start! There is not a reason > these days to prove that a Radian or XW will start a motor that bangs the > inverter to start. The only case I make for large old pump tech like these > is if it is for a fire suppression pump, in addition to a nice 3/4 HP > Grundfos home water pump. > > Dave Angelini Offgrid Solar > "we go where powerlines don't" > http://members.sti.net/offgridsolar/ > e-mail offgridso...@sti.net > text 209 813 0060 > > > > Really good to hear & thanks Chris. > > I just installed this system at our new home that we will be showing as a > > demonstration home. I come from the late '80s days of PV and a 1 HP pump > > was a major no-no back when. > > *Windy passed along a soft start suggestion & I was going to put a time > > clock turning on from 10AM-2PM every day to utilize a fuller bank. I will > > look at the SOC option on the Radian, but it is 200+' away from the > septic > > controller and conduit is in the ground. > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in a n-s > > canyon that limits the PV collection to 5 hours on a December day, that > so > > far even running a 3/4 HP air compressor all day/every day-7 days a week > > has never dropped at night more than 5%. > > > > > > > Dana Orzel Great Solar Works, Inc. > > 208.721.7003 d...@solarwork.com > > Idaho Contractor - # 028765 Idaho PV # 028374 > > NABCEP # 051112-136 www.solarwork.biz > > "Responsible Technologies for Responsible People since 1988" > > ï Please consider the environment before printing this email. > > > > > > -Original Message- > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On > > Behalf Of Chris Mason > > Sent: Friday, October 27, 2017 5:51 AM > > To: RE-wrenches > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps > > > > What's the problem with the 1H pump you anticipate? We live on a 8KW > > Radian and it's very robust. We have load management relay system to > > handle the dryer, it's only allowed to work above 95% state of charge. > > Since your lift station has range, i.e., it doesn't have to work every > > minute of the day, you can control it so it works only during a SOC range > > or Time of Day range. You can also turn off other loads so there is > enough > > power. If you run the lift pump during the night, there is less chance of > > a convection oven running at that time. Or mid morning when everyone is > at > > work. Having time control or SOC control is very handy. > > > > On Wed, Oct 25, 2017 at 9:37 PM, Dana wrote: > > > >> Ok all you whiz kids, bozos, & bolos: > >> > >> > >> > >> If I have a septic lift pump [off grid ouch] at 1HP/240 vac/8-amps to > >> meet all the usual state required overkill in septic design & a ½ > >> HP/240 vac/4.9-amp pump would do the same job but it will take 10% > >> more time to dose 800 gallons. > >> > >> Powered by an 8 KW Outback Radian inverter. > >> > >> From a load point of view and a 240-volt 3 phase wild AC well pump > >> limiting the overall surge and general wattage is the smartest move, > >> but; Which pump will use less overall power? We are using 240 volt to > >> utilize both inverters and drop the load on either half of the Radian > >> inverter. > >> > >> Is there a smarter lift pump to use? ECM motor? Permanent magnet? > >> > >> > >> > >> > >> > >> > >> Dana Orzel Great Solar Works, Inc. > >> > >> 208.721.7003 d...@solarwork.com > >> > >> Idaho Contractor - # 028765 Idaho PV # 028374 > >> > >> NABCEP # 051112-136 www.solarwork.biz > >> > >> "Responsible Techno
