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 <re-wrenches@lists.re-wrenches.org> > 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 <d...@solarwork.com> 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 Technologies for Responsible People since 1988" >> >> P Please consider the environment before printing this email. >> >> >> >> >> >> _______________________________________________ >> 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 >> >> > > > -- > Chris Mason > NABCEP Certified Solar PV Installer⢠> Solar Design Engineer > Generac Generators Industrial technician > > www.cometsolar.com <http://www.cometenergysystems.com> > 264.235.5670 > 869.662.5670 > Skype: netconcepts > _______________________________________________ > 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 > > > _______________________________________________ > 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 > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 _______________________________________________ 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
