The fridge consumes 2.8 amps per hour. The average usage is somewhere around
20 minutes, perhaps 15 minutes if the temperatures are on the cool side,
more if it's hot.  2.8 divided by three is close to 1 amp. I think it's a
reasonable assumption based on the feedback I've gotten from people who own
these fridges. No, it is by no means exact. I totally agree with you that
there are too many variables. There are some excellent controllers out
there,  battery monitors, that could determine precisely, but my figures are
super conservative. Even using super conservative figures, the fridge would
not run for a week, and again, that's my point.

Troy

----- Original Message -----
From: "Kim Brennan" <kimbrennan@mac.com>
To: <colorworks@gci.net>
Cc: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, July 27, 2009 1:10 PM
Subject: Re: Vitrfrigio install report

> Uh, if the compressor doesn't need to cycle, why would you expect the
> fridge to consume 1 amp an hour? Not having looked at the specs, is  that
> the standby power consumption?
>
>
> On Jul 27, 2009, at 4:53 PM, Troy wrote:
>
>> Agreed, but even taking the most conservative figures (one amp per  hour)
>> the
>> refrigerator is not going to run for a week, and that's really my  point.
>> The
>> situation will only get worse when everything else is factored in,
>> including
>> everything you mentioned, but there are other variables such as  lights
>> and
>> stereo, furnace, etc. all of which will make matters worse, not  better.
>>
>> Troy
>>
>> ----- Original Message -----
>> From: "Kim Brennan" <kimbrennan@mac.com>
>> To: <colorworks@gci.net>
>> Cc: <vanagon@GERRY.VANAGON.COM>
>> Sent: Monday, July 27, 2009 12:03 PM
>> Subject: Re: Vitrfrigio install report
>>
>>
>>> The problem with the math, is it makes several assumptions about the
>>> environmental circumstances that may or may not be valid. If it gets
>>> cooler at night, such that the fridge compressor doesn't need to  run
>>> much
>>> (or at all), this throws off your timing. A similar issues   comprimises
>>> the longetivity timetable, if it is hotter that  anticipated.  Opening
>>> the
>>> fridge a lot, will mean it cycles more. If  the fridge is more  tightly
>>> packed, it will cycle less. Etc.
>>>
>>> Lots of variables here.
>>>
>>>
>