How much power do I need (1 Viewer)

[Wildman]

How much power is a commonly asked question, when running via an inverter the power required is double that listed to allow for startup current on a lot of things.
The number of amps drawn from your battery is W(atts) divided by V(olts in this case 12V)

I hope the table is useful in answering some questions. As your batteries are given as amp/hrs the battery capacity divided by answer from the above will tell you how long a particular applience will run from your battery but do remember batteries should only be used down to 50% so a 110amp/hr battery has a useful charge of 55amp/hours

 

[cmcardle75]

How much power is a commonly asked question, when running via an inverter the power required is double that listed to allow for startup current on a lot of things.
The number of amps drawn from your battery is W(atts) divided by V(olts in this case 12V)

I hope the table is useful in answering some questions. As your batteries are given as amp/hrs the battery capacity divided by answer from the above will tell you how long a particular applience will run from your battery but do remember batteries should only be used down to 50% so a 110amp/hr battery has a useful charge of 55amp/hours

I'd ignore the figures for any electronics. They appear to be circa-1990. 500W for a TV? Really? A typical 32" TV these days takes about 40W. The 800W for a desktop computer would be more like 200W these days, unless it is a high end gaming machine. 50W for a radio is pretty spectacular, unless it had a built in heater. 2W might be more normal, unless you like it loud.

 

[pappajohn]

I'd ignore the figures for any electronics. They appear to be circa-1990. 500W for a TV? Really? A typical 32" TV these days takes about 40W. The 800W for a desktop computer would be more like 200W these days, unless it is a high end gaming machine. 50W for a radio is pretty spectacular, unless it had a built in heater. 2W might be more normal, unless you like it loud.

was thinking the same thing myself.

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[s7ev0]

Well, there you go!

Thanks to Wildman for posting it though, as it did lead to some more up-to-date figures. :thumb:

I don't suppose anyone's got a similar chart that's more current*, then?

Steve

*pun unintended, but I like it anyway

 

[BwB]

"Watt" an awful pun!

This is QI http://www.thesolarcentre.co.uk/pages/Home_Appliance_Energy_Use.html

 

[s7ev0]

"Watt" an awful pun!

This is QI http://www.thesolarcentre.co.uk/pages/Home_Appliance_Energy_Use.html

Interesting! Looking at the list though, I reckon (apart from LED lighting and the water pump) we only use a laptop, 15" TV and a travel DVD out of that lot.

Can't imagine anyone using anything off the DIY list in their van while away.

*stands back in anticipation of the next post being someone who trims hedges regularly when travellling*

Steve

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[thehutchies]

Interesting! Looking at the list though, I reckon (apart from LED lighting and the water pump) we only use a laptop, 15" TV and a travel DVD out of that lot.

Can't imagine anyone using anything off the DIY list in their van while away.

*stands back in anticipation of the next post being someone who trims hedges regularly when travellling*

Steve

As I posted recently we have (on the entertainments side):

Nintendo Wii.
Xbox.
Xbox 360.
Two Playstation Portables.
Flat screen TV.
Two laptops and a desktop PC.
Various tablets and smartphones.
Washing machine and spindrier.
Macerator to empty 350 litres of waste every ten days or so.

Then we have, on the DIY side,:

Angle grinder
Electric saw
Air compressor and tools
Hammer drill
And much more

There are even the Christmas tree and fairy lights in a locker somewhere.

 

[s7ev0]

Then we have, on the DIY side,:

Angle grinder
Electric saw
Air compressor and tools
Hammer drill
And much more

There are even the Christmas tree and fairy lights in a locker somewhere.

I guess that's only to be expected from someone who by their own admission drives a "wheeled shed"

Steve

 

[thehutchies]

I guess that's only to be expected from someone who by their own admission drives a "wheeled shed"

Steve

'The Wheelèd Shed', in fact.

The grave accent makes all the difference

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[s7ev0]

'The Wheelèd Shed', in fact.

The grave accent makes all the difference

If a grave accent is anything like a Scottish one, that'll be a Wee Lead Shed then?


Steve

I'll get me coat...