Cruisers & Sailing Forums (http://www.cruisersforum.com/forums/)
-   Electrical: Batteries, Generators & Solar (http://www.cruisersforum.com/forums/f14/)
-   -   What is your Real Amp Hour per Day Usage (http://www.cruisersforum.com/forums/f14/what-is-your-real-amp-hour-per-day-usage-172450.html)

barnakiel 10-09-2016 07:33

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by barnakiel (Post 2209781)
Our actual A / day are within 10% of our measured values, I think.

About 20 A / day anchored.
About 15 A / day sailing.

House bat 100 Ah. Solar 150W. Alt 60A (not required but present).

LEDs, windvane, vegetarians, etc.

Boat 26'. Two onboard.

b.

Units, units ...

20 Ah / day anchored.
15 Ah / day sailing.

Boat 26', two onboard.

Cheers,
b.

MarkJ 10-09-2016 08:14

Re: What is your Real Amp Hour per Day Usage
 
Cold solar pannels make more A's Ah's and Ampules per hour. Quite a lot more. Damn ridiculous, but true. Cath 22 lives on!

Bulawayo 10-09-2016 08:22

Re: What is your Real Amp Hour per Day Usage
 
Oh come on.....many of us are fully aware of what Stevens 47 meant with the postings. Stu is correct but it is hardly life threatening. Why do you have to try and tear others down with such an unwarranted critical statement - and its not the first time.



Quote:

Originally Posted by Jim Cate (Post 2209847)
Can't speak for others, but when I read a post by someone who can't be bothered to learn and use correct units I tend to not take it very seriously. This disregard for such simple things suggest to me that a similar disregard for accuracy of observation and reporting may lurk in the info presented.

I applaud Stu's long term efforts to get this point across.

I already have a life, so will disregard your advice.

Jim


Bulawayo 10-09-2016 08:25

Re: What is your Real Amp Hour per Day Usage
 
Hah, you 'corrected' just in time before the critique guru climbed in and denounced you!


Quote:

Originally Posted by barnakiel (Post 2210096)
Units, units ...

20 Ah / day anchored.
15 Ah / day sailing.

Boat 26', two onboard.

Cheers,
b.


Bulawayo 10-09-2016 08:31

Re: What is your Real Amp Hour per Day Usage
 
Pretty much the same; I think. With our solar panels and wind generators (at anchor only) it is much harder to be certain.
Would it be worth adding a bit more information such as solar panel capacity, battery bank size and type, boat size and main consumer loads? This is the sort of thing that Jimmy Cornell started out doing and there is now a void. Could be massively useful.



Quote:

Originally Posted by SV THIRD DAY (Post 2209739)
There was a little shock in another thread about the amount of power used on a daily basis by a Cruising Boat. Of course it will vary depending on if you are at anchor for the Day or Underway with all the electronic nav equipment and autopilot running. Number of crew also matters. So does having a wind vane vs electric autopilot. Refrigeration or no refrigeration. So to help those in the planning stages what do those out cruising or living aboard full time find to be their average power usage for Living at Anchor and While Underway?

Our data:
Crew of 4
Refrigerator and Freezer, electric Autopilot.
Living at anchor: 200-250AH/day
While Underway 300-400AH/day


Paperbird 10-09-2016 08:41

Re: What is your Real Amp Hour per Day Usage
 
Watched pretty carefully during two seasons on the hook in the ICW and Bahamas. Avg usage ~ 120AH/day. Includes Adler Barbour fridge, Engle freezer, LED lights, fans, laptops, VHF on 24x7, SSB daily for wx nets. More when u/w (WH autopilot, chartplotter). In the fall w/ short days, our 280W of solar almost but not quite kept up. No wind gen. We added add'l solar this summer (semi-flex on the canvas) to provide u/w power and to keep things topped off in the fall and less than ideal conditions.

Chuck Hawley 10-09-2016 11:55

Re: What is your Real Amp Hour per Day Usage
 
Racing on a Santa Cruz 40, five crew, to Hawaii.

Adler Barbour Cold Machine
Tricolor light
Sailing instruments
Some modest computer use
SSB
VHF

120 Ah per day.

You might be interested in an electrical budget spreadsheet I created in the mid-90s which has been modified for the Pacific Cup Yacht Race and can be downloaded here: https://pacificcup.org/kb/energy-management

Chuck Hawley

chris95040 10-09-2016 12:49

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by Bulawayo (Post 2210132)
Oh come on.....many of us are fully aware of what Stevens 47 meant with the postings. Stu is correct but it is hardly life threatening. Why do you have to try and tear others down with such an unwarranted critical statement - and its not the first time.

It's incredibly ambiguous and confusing when people start saying "amps" when they mean "amp hours" and vice versa.

If I tell you guys "my daily use at anchor is 20 amps" do I mean 20 amp draw, and therefore 20amps*24hours = 480 amp hours? Or do I mean 20 amp hours?

Sailmonkey 10-09-2016 13:06

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by sailorboy1 (Post 2210093)
That's a "new" frig? I have my large freezer and frig running all the time and wake up normally 20-40 ah out (depends on outside temps). Guess I never thought people had refrigeration that took over twice the power that mine takes.


Just wait until you get to 90 deg water and 90 degree air....the fridge will run a lot!!!! More.

Your numbers closely match mine in Kemah Texas in the winter when the water is cold.


Sent from my iPhone using Cruisers Sailing Forum

GoingWalkabout 10-09-2016 13:08

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by barnakiel (Post 2209781)
Our actual A / day are within 10% of our measured values, I think.

About 20 A / day anchored.
About 15 A / day sailing.

House bat 100 Ah. Solar 150W. Alt 60A (not required but present).

LEDs, windvane, vegetarians, etc.

Boat 26'. Two onboard.

b.

Does vegetarian consume less daily AH's than carnivorous? :smile:

GoingWalkabout 10-09-2016 13:34

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by MarkJ (Post 2210126)
Cold solar pannels make more A's Ah's and Ampules per hour. Quite a lot more. Damn ridiculous, but true. Cath 22 lives on!

Should I use a solar powered pump to spray/mist my panels to cool them down. :biggrin:

GoingWalkabout 10-09-2016 13:37

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by Bulawayo (Post 2210132)
Oh come on.....many of us are fully aware of what Stevens 47 meant with the postings. Stu is correct but it is hardly life threatening. Why do you have to try and tear others down with such an unwarranted critical statement - and its not the first time.

I'm sorry but Jim has earned the right to be as critical as he wants. By the way he wasn't being abusive or slanderous. Just made a criticism. Big difference.

chala 10-09-2016 13:42

Re: What is your Real Amp Hour per Day Usage
 
Quote:

Originally Posted by chris95040 (Post 2210295)
It's incredibly ambiguous and confusing when people start saying "amps" when they mean "amp hours" and vice versa.

If I tell you guys "my daily use at anchor is 20 amps" do I mean 20 amp draw, and therefore 20amps*24hours = 480 amp hours? Or do I mean 20 amp hours?

Not really. If you remove 20A from a 100A battery daily (24 hours) then 20 / 24 = 0.83A per each hours is an average it is likely that never ever you may read 0.83A on the current meter. Flexibility of mind do for better relation.

Bulawayo 10-09-2016 13:46

Re: What is your Real Amp Hour per Day Usage
 
Chris, I have already confirmed that Stu is correct. My posting was about the negativity by Jim Cate. It added zero to the discussion and simply attempted to belittle another forum member. If the other forum member had committed a henious crime then fair enough but it was simply a small error that was pretty clear to unravel. Its not the first time.
It certainly does not encourage people to contribute.



Quote:

Originally Posted by chris95040 (Post 2210295)
It's incredibly ambiguous and confusing when people start saying "amps" when they mean "amp hours" and vice versa.

If I tell you guys "my daily use at anchor is 20 amps" do I mean 20 amp draw, and therefore 20amps*24hours = 480 amp hours? Or do I mean 20 amp hours?


Bulawayo 10-09-2016 13:50

Re: What is your Real Amp Hour per Day Usage
 
How do you 'earn the right' ? What is it that gives someone the right to be so rude without reasonable justification? A contributor makes a small error and that justifies a personal attack?
I also did not use the words that have now introduced, I said criticism - big difference indeed.


Quote:

Originally Posted by GoingWalkabout (Post 2210319)
I'm sorry but Jim has earned the right to be as critical as he wants. By the way he wasn't being abusive or slanderous. Just made a criticism. Big difference.



All times are GMT -7. The time now is 20:24.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.


ShowCase vBulletin Plugins by Drive Thru Online, Inc.