Re: [RE-wrenches] My .02 - 12/24v garage door opener.....

[Darryl Thayer]

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 
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  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 *
>>
>> 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 
>> *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"  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
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Re: [RE-wrenches] My .02 - 12/24v garage door opener.....

[jay]

So why not use one of the garage doors that has a built in backup battery and 
just charge the built in battery directly?
Its got all the internals already done?

Install a CC and PV module and you are all done?

Jay

peltz power



> On Feb 1, 2018, at 12:18 PM, Jerry Shafer  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  > 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    
> 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  >
> 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"  > 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.
> 
> 
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Re: [RE-wrenches] My .02 - 12/24v garage door opener.....

[Jerry Shafer]

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  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 *
>
> 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 
> *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"  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-wrenches@lists.re-wrenches.
> org/maillist.html
>
> List rules & etiquette:
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>
> Check out or update participant bios:
> www.members.re-wrenches.org
>
>
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>
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Re: [RE-wrenches] My .02 - 12/24v garage door opener.....

[John]

Hi all,   perhaps a bit of clarification might help.1) the location of the 
garage is in a block of flats/units where all the garages are at the end of the 
row and it is not possible to get a.c. into the end unit of 4 garages without 
having to obtain permission of all the other 3 garage owners, which has its own 
complications and is highly unlikely.
2) it is not being approached as a *cost saving* measure as someone suggested.  
It is merely a practical application where a.c. is not available.
3) another person mentioned that it is high energy use for a short time, 
therefore the total energy per day is low.
4) am I to understand that there is no readily available *off-the-shelf* 
solution for a 12/24v garage door opener??

Thanks for the input - John V

+

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Dave Angelini Offgrid Solar
Sent: Thursday, 1 February 2018 7:42 a.m.
To: RE-wrenches
Subject: Re: [RE-wrenches] My .02 - 12/24v garage door opener.

Not even going to mention building code and running DC wiring outside of the 
area (battery/inverter/chargers location) an inspector would allow.
Even some of the very rural/extreme remote counties I work in know that they 
are ill-equipped to inspect DC wiring. Some will tell you there is no 
inspection for offgrid homes but if there is a fire they will say they told the 
installer no DC wiring except in the area of the battery.


Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060


> 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   d...@solarwork.com
>
> Idaho Contractor - # 028765 Idaho PV # 028374
>
> NABCEP # 051112-136<http://www.solarwork.biz>
> 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 
> <mailto: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 
> <mailto:RE-wrenches@lists.re-wrenches.org>
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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Re: [RE-wrenches] My .02 - 12/24v garage door opener.....

[Dave Angelini Offgrid Solar]

Not even going to mention building code and running DC wiring outside of
the area (battery/inverter/chargers location) an inspector would allow.
Even some of the very rural/extreme remote counties I work in know that
they are ill-equipped to inspect DC wiring. Some will tell you there is no
inspection for offgrid homes but if there is a fire they will say they
told the installer no DC wiring except in the area of the battery.


Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060


> 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   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 
> 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"   > 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
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> 
>
> Check out or update participant bios:
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>
>
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Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060

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