I took a look at one my customer's garage usage, I was not there, but Egauge said total load when opening or closing the garage door, was 650 watts for about 30 seconds. meaning 5.6 Wh for a single operation. twice a day 22.4 Wh daily use two open and close cycles. but I see a background load besides the light, (LED about 7 watts for 3 minutes= 0.35 Wh). There is a background load of about 100 watts, Possible the radio receiver? or? This is the gorilla in the room. 100W for 24 hrs is 2400 Wh. So if this is correct the pushbutton is a real problem. perhaps a button on the door to open instead of radio?
Also using the 7 day to 50% rule at 25 Wh/day the battery will need to be 30 AH @12 volt and the solar module would be 90 watts using 2 SSH/day On Thu, Feb 1, 2018 at 2:18 PM, Jerry Shafer <jerrysgarag...@gmail.com> wrote: > John > Samlex makes small pure sine wave inverters from 12 to 48 volts and down > to 150 watts > Jerry > > On Wed, Jan 31, 2018 at 5:23 AM, Dana <d...@solarwork.com> wrote: > >> Wow, this is flash from the past… I had almost forgotten about running >> DC in a house or garage. >> >> With todays inverter efficiency’s & costs VS. the cost of proper DC wire >> sizing, garage lighting?, & having to modify a reliable lift system, etc. >> >> Is there really a cost savings in the longs run? >> >> >> >> It’s a garage, are you going to need to run any AC tools, battery >> chargers? >> >> I mean it is a potential man cave, really now…. >> >> >> >> ------------------------------------------------------------ >> ---------------- >> >> Dana Orzel Great Solar Works, Inc. >> >> *C - 208.721.7003 <(208)%20721-7003> >> d...@solarwork.com <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. >> >> >> >> >> >> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On >> Behalf Of *Darryl Thayer >> *Sent:* Wednesday, January 31, 2018 3:46 AM >> *To:* newrewrenches <RE-wrenches@lists.re-wrenches.org> >> *Subject:* Re: [RE-wrenches] 12/24v garage door opener..... >> >> >> >> I have measured the energy used by a garage door opener on more than one >> occasion. they draw a fair amount of power while operating, however. they >> don't draw power otherwise so the total energy is very low. I am wondering >> if a low cost non pure sine inverter to AC operated off the switches which >> would be low voltage would not serve the same low energy use and >> reliability of a DC garage door opener >> >> >> >> On Jan 31, 2018 2:39 AM, "John" <j...@gosolar.co.nz> wrote: >> >> Hi all, any recommendations where to find 12 or 24v garage door >> openers. Can’t remember this coming up on the list beforehand. It is >> just for a single car garage door. Don’t want to use an inverter, >> usually better to go direct to a dc motor. >> >> Once I have a suitable opener, I can design the rest of the system around >> it. >> >> Thanks for any/all input. John Veix, >> GoSolar Ltd, N.Z. >> >> >> _______________________________________________ >> 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 >> -wrenc...@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 >> -wrenc...@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 > > >
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