[C320-list] C Pap Machine

[Warren Updike]

I checked a couple of 15" TV w/DVD and found that both offer in addition to 110V plug, a 12V power/car adapter. One drew 24W, the other 20W. Using the car adapter at 12.5V, that equates to 1.9A and 1.6A load, respectively. Your refer might draw 5-7A depending on model, so the load from such a TV on a 4D battery is rather small considering you might only run it for a few hours a day. However, if were you to run it on an inverter, the load would be greater because of the innate inefficiency of converting from DC to AC.  
Convert all incandescent lights onboard to LED, and you might more than cover the power to run the TV. 

Warren and Pattie Updike
1994 C320 "Warr de Mar" #62
Middle River, MD (Chesapeake Bay)

-----Original Message-----
From: Larry Frank [mailto:WindSwept at stx.rr.com] 
Sent: Tuesday, May 08, 2018 10:48 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] C Pap Machine

Ed,

I would say that is impossible to tell.  With two 4Ds in parallel and
loads including a fridge running almost continuously ( hot in S.TX),
anchor light, cabin lights, etc. I could not tell any difference.
Batteries would have been less than 50% discharged.  I know because I keep
a close eye on them and do not go below 50%.

Larry

On 5/8/18, 7:34 AM, "Edward Thompson" <edthompson3 at outlook.com> wrote:

>Larry: How were the house batteries affected the next morning?
>
>Ed Thompson
>Bellavia #739
>
>> On May 7, 2018, at 11:08 PM, Tom Grass <tgrass462 at gmail.com> wrote:
>> 
>> Larry,
>> Thanks so much for the information!
>> Tom and Tracy
>> S/V Bucket List
>> C320 #1135
>> 
>>> On Mon, May 7, 2018 at 9:59 PM, Larry Frank <WindSwept at stx.rr.com>
>>>wrote:
>>> 
>>> I have had two guests use a CPAP at the same time off one 250 W
>>>inverter.
>>> No problem.  Plus they were very quit and could not hear me sawing logs
>>> either.
>>> 
>>> Larry
>>> WindSwept
>>> C320 #246
>>> 
>>>> On 5/7/18, 9:22 PM, "Tom Grass" <tgrass462 at gmail.com> wrote:
>>>> 
>>>> We are having overnight guests on our boat this summer ... the husband
>>>> uses
>>>> a Rec Med Air Mini C-Pap unit that draws 6.3 Watts (27 Watts Peak).
>>>> Questions:
>>>> 
>>>> 1.  Have any of you run such a device on your boat - at anchor?
>>>> 2.  If so - did your inverter successfully handle the load?
>>>> 3.  Did you have to keep your generator running for part or all of the
>>>> time
>>>> it was being used?
>>>> 
>>>> We have a Honda 200 W generator.
>>>> 
>>>> Thanks for your feedback.
>>>> 
>>>> Tom & Tracy Grass
>>>> Bucket List
>>>> #1135
>>> 
>>> 
>>>