Help with power audit

As part of my multihull dh550 systems design I am working on the various systems designs. One of the bits of information I need revolves around power usage. So I am doing a power audit at home and on the small boat. I have built an electrical systems model to size batteries, generator, solar, etc and I need to capture specific loads. So here is my draft list of powered items (be they gas, electrical, diesel powered) that I would like you to check and add to if possible. Any item you can add would be great because I can check it off the list.

Cooktop
Propulsion
Lights internal
Lights external
Electronics - nav, computer, transducers, instruments, radios, etc
Entertainment, tv, radio, cd, DVD, etc
Water heater
Water pumps
Anchor windlass
Sheet winches
Microwave
Kettle
Toaster,
Other galley small appliances - mixer, etc
Bread maker
Water maker
BBQ
Air heater
Air cooler
Fans (small cabin type)
Fans (other, eg engine space)
Fridges
Freezer

I bought a watt/hr meter that I have been putting on items at home to get the weekly fortnightly average usage and I have got some good normal pattern usage which I have applied to the model. So please check the list for the things I have missed and let me know.

I am willing to share the excel model once it's finished if you would find it useful.

Many thanks
Mick

 

One option which it is worth considering is having sufficient extra power budget to be able to run power tools on an occasional basis to carry out running repairs and with all those systems there will be occasional maintenance required. Some systems if they failed you would simply ignore till you reached your next port but watermakers for example or propulsion/generators require urgent attention should they fail. One way to address the issue is to use battery powered tools and have a power budget set aside for charging. A mate of mine has a convertible cockpit table which he uses for repairs with a clear plastic shroud that he can put up when repairing small parts it stops circlips springing off into the sea or disappearing between the saloon cushions when he is repairing a smart idea.

 

G'day Corley, thanks for the reply. Yes, will include that as a misc item. What I am finding very interesting is the amount of power "continuous" items like phone or laptop chargers used when they are left plugged in. We have a charging spot at home where all the phone, kindle, iPad, laptop, etc are plugged in. Since Friday noon it has consumed 1.72kw/hrs...I usually leave the metering device on for a week or two to get a good daily average. The fridge, freezer uses 1.4kw/hrs per day! Lots of things that are continuous are frightening users of power.

Thanks again
Mick