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Lost the formula - AGAIN!!!! Lost the formula - AGAIN!!!!
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Non Diving Posts: Discuss Lost the formula - AGAIN!!!! in the Non-Diving Related Forums forums: Sorry, I know I've asked this, and received a reply, before but I have spent 5 mins searching and ............................... ...

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Old 26-09-07, 02:36 PM
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Lost the formula - AGAIN!!!!
Sorry, I know I've asked this, and received a reply, before but I have spent 5 mins searching and ...............................

In fact, I couldn't even figure out the right question to put into Google.

What is the formula for calculating how much an electric appliance will cost to run.

I'll write the answer down this time! Promise!
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Old 26-09-07, 02:39 PM
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Look at how much the leccy company charges per Kw Hr then look at the consumption rate per hour of the appliance .
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Old 26-09-07, 02:40 PM
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ifs its 1 kilowatt it will cost about 14 pence an hour
or what ever you pay per kilowatt
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Old 26-09-07, 02:41 PM
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1 kw of electricity is 1 unit .
1kw = 1000 watts
so if you have a 300 watts appliance you
take 300 watts divided by 1000 watts = 0.3 units of electricity per hour

a 3 kw fan heater will use 3 units per hour .
OK ?
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Last edited by colinicky : 26-09-07 at 02:57 PM. Reason: missed a zero
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Old 26-09-07, 02:41 PM
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Quote:
Originally Posted by Prometheus
Look at how much the leccy company charges per Kw Hr then look at the consumption rate per hour of the appliance .
I seem to remember: Amps = (Watts / Volts)
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Old 26-09-07, 02:45 PM
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FFS Bryan put a hat and coat on then you won't have to worry.
and fingerless mits in a Steptoe & son style.
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Old 26-09-07, 02:53 PM
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Quote:
Originally Posted by colinicky
1 kw of electricity is 1 unit .
1kw = 1000 watts
so if you have a 300 watts appliance you
take 300 watts divided by 1000 watts = 0.3 units of electricity per hour

a 3 kw fan heater will use 3 units per hour .
OK ?
.
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Old 26-09-07, 02:59 PM
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Quote:
Originally Posted by colinicky
1 kw of electricity is 1 unit .
1kw = 1000 watts
so if you have a 300 watts appliance you
take 300 watts divided by 1000 watts = 0.3 units of electricity per hour

a 3 kw fan heater will use 3 units per hour .
OK ?
I thought a 'kilo' was a thousand?

[edit]Did you just edit your post whilst I was posing the above question?
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Old 26-09-07, 03:01 PM
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Finless: You couldn't invent him...
  
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Quote:
Originally Posted by colinicky
1 kw of electricity is 1 unit .
1kw = 1000 watts
so if you have a 300 watts appliance you
take 300 watts divided by 1000 watts = 0.3 units of electricity per hour

a 3 kw fan heater will use 3 units per hour .
OK ?
Yes, OK, got it. Just you wait till you're my age!!! Only problem is that I will have forgotten and won't know to gloat when your memory is gone!!!
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Old 26-09-07, 03:07 PM
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Finless: You couldn't invent him...
  
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Quote:
Originally Posted by colinicky
1 kw of electricity is 1 unit .
1kw = 1000 watts
so if you have a 300 watts appliance you
take 300 watts divided by 1000 watts = 0.3 units of electricity per hour

a 3 kw fan heater will use 3 units per hour .
OK ?
My old fan heater only says 240V~50Hz, 2000W.

How do I know it uses 2000W in an hour? Is that just a given that any wattage figure on an electrical appliance is "per hour"?
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