1. I'm trying to save electricity and ease our electric costs. We pay 18.8 cents a KWH and our last bill was \$180 (a month.)

I'm starting to change our bulbs over to CFL's and my dad is writing down all the amps and wattages of the other appliances for me. My question is how do I find out what the clothes dryer actually uses. He says it uses 23 amperes but I don't think it uses that all the time. I know it has a thermostat.

Any clever way of finding out what it actually uses for power?

Bee

2.

3. I am writing this pointless sentence to see if you have put me on your ignore list or what, and if you'd temporarily unblock me just in case my post contained the answer to your question.

Aah, life is good.

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4. Originally Posted by Bettina
I'm trying to save electricity and ease our electric costs. We pay 18.8 cents a KWH and our last bill was \$180 (a month.)

I'm starting to change our bulbs over to CFL's and my dad is writing down all the amps and wattages of the other appliances for me. My question is how do I find out what the clothes dryer actually uses. He says it uses 23 amperes but I don't think it uses that all the time. I know it has a thermostat.

Any clever way of finding out what it actually uses for power?

Bee
Do you want to reduce your electric bill. Think in some other you can conserve electricity and thus non-renewable resources.

5. There are plenty of 'clever ways' to find out, sadly It is unlikely you will have the 'clever equipment' 23amps at 110Volts = 2.5Kwatt. You could listen to it ticking on and off and work out how much time it's on.

Do you want to reduce your electric bill. Think in some other you can conserve electricity and thus non-renewable resources.
I'm trying..

Originally Posted by Megabrain
There are plenty of 'clever ways' to find out, sadly It is unlikely you will have the 'clever equipment' 23amps at 110Volts = 2.5Kwatt. You could listen to it ticking on and off and work out how much time it's on.
My friend is going to help me by clamping on a chart recorder. I'm not familiar with that but I really want to know about that dryer.

Bettina

7. The chart recorder will merely record the current or 'on time' of the thermostat, I suspect he will clamp a current sensor around the cable to do this. what it will show is a line which will merely move between two levels, you then work out the ratio of these levels and divide into the maximum current to get the average. So if your dryer is 2KW and on for 25% of the time then the average power will be 500Watts. if you pay 10 cents a killowatt hour then the running cost of your dryer will be 5 cents per hour for every hour you have it switched on.

8. Originally Posted by Megabrain
The chart recorder will merely record the current or 'on time' of the thermostat, I suspect he will clamp a current sensor around the cable to do this. what it will show is a line which will merely move between two levels, you then work out the ratio of these levels and divide into the maximum current to get the average. So if your dryer is 2KW and on for 25% of the time then the average power will be 500Watts. if you pay 10 cents a killowatt hour then the running cost of your dryer will be 5 cents per hour for every hour you have it switched on.
Well, the chart recorder didn't work out. According to the manual we had to connect the clamp meter across just one of the ac lines not the whole cord but we can't do that without making something.

However, my dad kicked us out because he doesn't want us to mess around with 220V so we have to think of something else. I know the voltage (220) and the amperage (23 amps). I could just sit there and watch the panel light dim when the heater goes on but thats too boring and long. I need another way and I'm not giving up.

Bee

9. OK here is another way, (when dad is out!) turn everything in the house off, read the electric meter as accurately as you can, turn the dryer on for 1 or 2 hours then at the end read the meter again, subtract start reading from end reading and divide by the number of hours, now multiply by 1000 for the number of watts used. The longer you do this test for the more accurate will be the result.

Are you in the US? if so your supply voltage should be 110 not 220V. 220V is mostly europe (& Canada?) UK is 240V.

10. Originally Posted by Megabrain
OK here is another way, (when dad is out!) turn everything in the house off, read the electric meter as accurately as you can, turn the dryer on for 1 or 2 hours then at the end read the meter again, subtract start reading from end reading and divide by the number of hours, now multiply by 1000 for the number of watts used. The longer you do this test for the more accurate will be the result.

Are you in the US? if so your supply voltage should be 110 not 220V. 220V is mostly europe (& Canada?) UK is 240V.
quite wrong. they have newly upped the voltage by 10 in both america and canada see chart: http://www.kropla.com/electric2.htm

11. No, not quite wrong, slightly out maybe, I suspect it will be +/- 0 % anyway.

12. Originally Posted by Megabrain
OK here is another way, (when dad is out!) turn everything in the house off, read the electric meter as accurately as you can, turn the dryer on for 1 or 2 hours then at the end read the meter again, subtract start reading from end reading and divide by the number of hours, now multiply by 1000 for the number of watts used. The longer you do this test for the more accurate will be the result.

Are you in the US? if so your supply voltage should be 110 not 220V. 220V is mostly europe (& Canada?) UK is 240V.
Hey, that will work. My outside meter is a digital one so its easy to read. I can keep almost everything off and any remaining that may be on would be neglible compared to what the dryer draws. I can do a load of clothes and read a book until their done.

Thanks. I will do that. BTW.. We have 220 volts coming into the house that the dryer and stove use. Everything else is 110.

Bettina

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