How to work out amps?

Samy0000

So I'm trying to find out how much energy my tv uses but I'm not having much luck. After reading for 3 hours, there's still one thing I'm not able to find an answer for: I read that I need to multiply the volts for amps which would give me the watts and then work out the price from there but the label behind my tv says "220-220V" and then "50 Hz" and the model number and similar numbers and there's nothing about the amps so how do I find out the amps in this case or how do I calculate the watts without knowing the amps?

tim_p

From the information given, you can’t.

boo_star

Samy0000 wrote: »

So I'm trying to find out how much energy my tv uses but I'm not having much luck. After reading for 3 hours, there's still one thing I'm not able to find an answer for: I read that I need to multiply the volts for amps which would give me the watts and then work out the price from there but the label behind my tv says "220-220V" and then "50 Hz" and the model number and similar numbers and there's nothing about the amps so how do I find out the amps in this case or how do I calculate the watts without knowing the amps?

https://www.bbc.co.uk/bitesize/guides/z8b2pv4/revision/1

As above, unless you know the resistance as well as the voltage, you won't be able to work out the current..

Robin9

Make and model of your TV please

andy111

An average 32"TV wattage would be about 50/60 watts maximum.

Larger all singing TV may be as high as 100/120W.

Call it 60W so at an average 15p per Kwh 10 hrs would be 9p per day, or obv. about 1p per hour.

alfie1950

You are totally overthinking this issue..
Most TV manufacturers provide wattage details in their product specification.
Just look at the tv's on Curry's website which give the wattage and annual usage although this is probably the maximum because the power used will vary with brightness/contrast of the screen and the volume level.
So any figure will be nominal and unless you monitored the power consumption through an inline power meter you could not expect it to be accurate.

savemoney

Just get a plugin meter


https://amazon.co.uk/230V-250V-Monitor-Consumption-Calculator-Analyzer/dp/B07FZZ17ZY

Talldave

As has already been said there are too many variables even for one TV. A large OLED will use more energy showing High Dynamic Range content than a standard definition TV channel. But in standby it might only use 0.1W.

It would be interesting to know what led the OP to seek this information?

Most plug-in energy monitors will be incapable of accurately measuring such low standby consumption.

Gerry1

There's a very simple way to find out that's free and very accurate. Turn absolutely everything off at the wall sockets, including the boiler, doorbell, burglar alarm, router and things on standby.

Look at the meter for few minutes and make sure the red light doesn't flash. Turn on the TV and see how long elapses between each red flash.

It's probably 1000 flashes per kWh (the meter will tell you) so it's quite easy to work out the TV's consumption.

Ectophile

Gerry1 wrote: »

There's a very simple way to find out that's free and very accurate. Turn absolutely everything off at the wall sockets, including the boiler, doorbell, burglar alarm, router and things on standby.

Look at the meter for few minutes and make sure the red light doesn't flash. Turn on the TV and see how long elapses between each red flash.

It's probably 1000 flashes per kWh (the meter will tell you) so it's quite easy to work out the TV's consumption.

It may be simple, but for most people, it's totally impractical.


You have to go around unplugging everything. Including built-in fridges, freezers and the like. You won't have any lights to see by, so you will have to sit by the meter with a torch.


Everything with a clock in will need to be reset again when you turn the power back on.


Finding the label on the back of the appliance, or digging out the instruction manual is a lot less hassle.

Stompa

Ectophile wrote: »

Finding the label on the back of the appliance, or digging out the instruction manual is a lot less hassle.

Agreed. Mind you, I've never had an electricity meter with a flashing light either!