Energy bill increases

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presta

Legendary Member
Just found out the broadband box uses 20w an hour
You still haven't understood the difference between power and energy.

the broadband box uses 20w........correct.
the broadband box uses 72kJ an hour..........correct.
the broadband box uses 20wh an hour..........correct, but a bit perverse.
the broadband box uses 20w an hour..........meaningless.

thats 480wh of electric, so around 18p a day.
About the same as mine:

1666090211796.png


How many houses with three phase electrics though
Virtually none, and those that do will still have 240V ring mains, because nobody makes 415V domestic appliances.
One problem with the energy crisis is that many chickens of insulting and sidelining basic school science and maths, allowing a culture to develop where it's often seen as cool to call basic tasks difficult or to fail at them, are now coming home to roost. This is not a political point
It's more cultural than political, it's been the height of fashion to see engineers and scientists as geeks and nerds.
 

jowwy

Can't spell, Can't Punctuate....Sue Me
You still haven't understood the difference between power and energy.

the broadband box uses 20w........correct.
the broadband box uses 72kJ an hour..........correct.
the broadband box uses 20wh an hour..........correct, but a bit perverse.
the broadband box uses 20w an hour..........meaningless.


About the same as mine:

View attachment 665049


Virtually none, and those that do will still have 240V ring mains, because nobody makes 415V domestic appliances.

It's more cultural than political, it's been the height of fashion to see engineers and scientists as geeks and nerds.

Again being padantic…..lets put it this way it doenst use a full kwh of electric…….so lets say its 0.48kw/h

hows that for the pedantics.
 
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Alex321

Guru
Location
South Wales
Again being padantic…..lets put it this way it doenst use a full kwh of electric…….so lets say its 0.48kw/h

hows that for the pedantics.

Pedantically, just as wrong as before.

If it draws 0.48kW of power, then it in an hour it uses 0.48kWh, not 0.48kW/h.

And if it is using 20W, that is 0.02kWh in an hour. I.e. It takes 50 hours to use 1kWh (which is one unit in electricity costs).
 

jowwy

Can't spell, Can't Punctuate....Sue Me
Pedantically, just as wrong as before.

If it draws 0.48kW of power, then it in an hour it uses 0.48kWh, not 0.48kW/h.

And if it is using 20W, that is 0.02kWh in an hour. I.e. It takes 50 hours to use 1kWh (which is one unit in electricity costs).

So again i was correct….but people want to make some big issue over the wording.
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
Getting bored of this.... :whistle:
 

DaveReading

Don't suffer fools gladly (must try harder!)
Location
Reading, obvs
Better for the battery health if you only charge to 80%.

I'd not be worrying about energy use though. It's going to be less than an old school lightbulb.
Yes, more of a battery life issue than a question of energy use.

The app I use to monitor charging on my phone reckons charge to 80% and don't let it discharge to less than 30%.
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
Just found out the broadband box uses 20w an hour, just to send a bloody internet signal around the house….thats 480wh of electric, so around 18p a day. Sheesh

20w consumption is a fair bit more than my box - The 'office' plugs are all into one extension and it's using about 8w, when the laptop, monitors etc are on standby, but the 't-internet' box is ON. That said the 3 x mesh discs probably use enough to take it over 20w overall.
 

jowwy

Can't spell, Can't Punctuate....Sue Me
20w consumption is a fair bit more than my box - The 'office' plugs are all into one extension and it's using about 8w, when the laptop, monitors etc are on standby, but the 't-internet' box is ON. That said the 3 x mesh discs probably use enough to take it over 20w overall.

Yeh it does seem a lot for such a small item…….
 

Scaleyback

Veteran
Location
North Yorkshire
Yes, more of a battery life issue than a question of energy use.

The app I use to monitor charging on my phone reckons charge to 80% and don't let it discharge to less than 30%.

That is pretty sage advice to obtain max battery life for any appliance or even Elelectric vehicle using a modern lithium battery. Of course you can charge to 100% but this 'stresses' the battery cells and if you do so best to start using the battery. As for discharging ? I don't think you can discharge to 0 (zero) any decent battery will have built-in protection to stop this happening. Leave long enough in a discharged state and you will probably kill the battery.
 

jowwy

Can't spell, Can't Punctuate....Sue Me
You were not correct.

The wording you use shows a fundamental lack of understanding of the difference between electrical power and electrical energy.

What it actually shows, is you knew what i meant and so did the rest and rather just say “i know what he means and nothing needs to be said” you chose to pedantic about it and make a post trying to put me right. But no worries…..i know what i meant and thats all that matters to me.
 
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