Forums » Ask a Question

Use this forum to post your questions to our experts – you need to be logged on to do it (you can register here ), then scroll down to the bottom of this page and click the blue Post Thread words

If you can help answer the question, feel free to post a reply – you need to be logged on to do it (you can register here ), then hit the reply button on the thread.

 

To go back to the experts page click here>>

AuthorMessage
malibusun
malibusun

Posted: Sun May 18, 2008 9:19pm

Post Subject: fridge

is it better to use 12volt or 240 via inverter iam using one starter and two domestic batteries both 120 amps

Tony-B
Tony-B

Posted: Sun May 18, 2008 10:17pm

Post Subject: fridge

Much depends upon how you are going to supply the fridge, how large you need it to be, how much you are willing to pay for it and what other mains equipment you have on board. Oh, and also what you mean by better. If you have a large electrical demand and you will spend most of the time running a generator or else be on a shore line I suspect a mains fridge would be the most cost effective. If you have a large inverter that you intend to use to power other things you may well find the inverter itself uses up to 5 amps just to power itself. Now with a 3.5kW load that is small, but it is rather more than what a mains fridge would draw so even with an A+ rated fridge I doubt it would make for long battery bank life. If you have a quality inverter with an output well matched to the fridge AND the fridge has the highest efficiency rating then I suspect any differences between mains and 12 volts will be marginal. If you can not get a 12v fridge that is large enough then you will have to have a mains fridge. For an ordinary cruising boat with modest electrical demands I suspect the 12v fridge would be more satisfactory. Before you get too far into specifying electrical equipment please go onto my website and in the course notes you will find instructions for doing a power audit. This will give you an idea about how many batteries you will need for your chosen equipment and it might change your mind. I have a 12v fridge on a two battery domestic bank and the batteries have never gone flat when they are in good condition, but I do run my engine every day when on the boat. Tony Brooks

malibusun
malibusun

Posted: Mon May 19, 2008 9:04pm

Post Subject: fridge

Tony many thanks i only use 12 volt for lights,water pump and television sometimes keeping usage to a minimum john b

Most Read

Newsletter Sign Up

Canal Boat monthly newsletter
Sign up to receive our regular email newsletter

Our Privacy Policy

Like us on Facebook



Follow us on Twitter

Cache: Disabled for this object  Total Queries: 43.  Total Objects: 162.  Total Unserialized: 3. Total Runtime: 0.30 seconds.