Hi how to convert to kilowatt hour using this meter? Do we really need to multiply by 20

Trickle chargers keep the battery fully charged.
They usually have a small cube-shaped transformer with a cord and plug or alligator clips.
If you look on the cube part label it will tell you the "wattage" , probably around 20 watts or similar.
This means while it's in use it draws 20 watts through your electric meter, the device that calculates your electric usage/bill.
You are charged for kilowatt hours.
To calculate how many kilowatt hours the trickle is using
multiply 20 X 24 hours X 31 days in a month .
Or 14,880 about 15 kilowatt hours a month.
In Florida a KWH is about 12 cents so it would cost you about $1.80 a month to trickle charge.

Look at your amps and multiply by volts. This will give you watts.


ex.motor label 115V/14.4A 230V/7.2A

Whether you are running on 115v or 230v you get 1,656 watts.
This converts to 1.656 KW (kilowatts)
Your power company charges you by the KW hour. I'll use
12 cents per kilowatt hour for example.

$0.12 x 1.656 = .1987
This rounds off to 20 cents per hour to run, so if you run the pump 6 hour a day,180 hours per month, the electrical cost would be
about $36 per month.

• Multiply by the temperature and pressure figure (1.02264).
• Multiply by colorific value (39.25)
• Divide by 3.6 to get the number of kilowatt hours (kWh)

7000 multiply by 1.02264 multiply by 39.25 divide by 3.6 ans 78047 kwh
Make sure you have the correct colorific value for your gas but 39.25 is most common

Hi,

Wattage is simply calculated by multiplying voltage by amperage. Look on the back of your system, and it will say how many amps the system uses. Often, it will also provide the wattage. For instance, the back of a ViewSonic E220 is 2.5A at 120V - ~300 Watts/Hr. An average rate is 10 cents per kilowatt hour, or 3 cents per hour to leave your monitor on. or 72 cents per day.

A computer system can use between 150 and 600 or more watts per hour. Together, it could cost between $20 and $60 a month

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kilowatts= electric motor rating in horse power X 746 watts X 24 hours X 60 minutes X 60 seconds/1000

1.50 hp X 746/1hp X 24 hours x 3600seconds =

1.5 * 746 * 24*3600 =96681.6 kilowatts/day









=

Hi .. Wattage is a measure of power .. it is the voltage a device opperates at multiplied by the amount of amperage it uses. Sometimes called volt- amps. For an example of this, a 200 watt lamp, on a 120 volt circuit, is using about 1.66 amps. That typical circuit is rated for 15 or 20 amps. The rating is determined by the wire size and the breaker protecting the circuit .. so on my lighting circuit I can install about 8 to 10 of these lights and be safely within the limits of the circuit. For a 1000 watt microwave , on a 20 amp kitchen circuit, this means that the microwave is using about half of the capacity of the circuit. You are charged for your use of electricity by a rate times your usage in kilowatt hours, or how many watts you use, times the hours you are using them.

To determine the cost of using this air conditioner, you will need to find out what your electric company charges per kw/h. This is the standard unit that electricity is charged for. Next determine the wattage of the air conditioner. This should be found on the unit name plate. If you can not find the wattage by the name plate, the take the voltage and multiply by the amperage, this will give you watts. Next multiply the wattage by 24. (watts per hour x 24 hours) Finally divide this number by 1000. This will give you the total Kw that the unit will use in a 24 hour period. If you multiply this number by the cost per Kw that will give you the operating cost of your unit for one day.
ex. electric company charges .25/Kw The unit uses 1000 watts 1000 x 24 = 24000 watts 24000/1000 = 24 Kw 24 Kw x .25/Kw = $6.00 day
Note: all figures shown above were randomly generated in my head, and have no correlation to your calculations. Hope this helps.

If you look on the tag on the oven, that is visible when the door is open, there is a rating number followed by a kw. This number will tell you how much power the unit will use while the elements are on.

So for example if it says 5kw if the elements were on for one full hour it would use 5 Kilowatts of energy.

One thing to note is the elements are typically only on for 20% of a normal baking cycle. So for normal baking you would multiply the 5kw by 20% and get a power usage of 1 Kilowatt of energy. This would be higher for using self clean and lower for short baking times like cookies.

I hope this was not too confusing.

kwh is kilowatt hours. it is a function of the electric meter to take the amperes and the voltage and multiply them together to give total watts. this figure is again multiplied by one thousand to get killowatts. a killowatt hr is 1000 watts times 60 minutes.

Electricity is charged by Kilowatts per hour - There is a very easy formula for you to determine how much electricity your unit consumes.

Locate a sticker on your unit, it will usually say something like 120VAC follow by a number with A....... example 120VAC (which means 120Volts alternative current) and 5A (5 amps). Locate those 2 numbers, multiply them together.

Here is the formula: V*A=W (Volts * Amps = Watts)

So example if you have 120V 4A, that makes 480 W !

Sometimes on some units it already says the wattage, expressed in W Example 100 W !

Once you determined the WATTAGE, divide it by 1000, that gives you your KILOWATTS.

So example, unit uses 400 W..... you will do 400 / 1000 = 0.4 KiloWatts / hour

Next, locate your utility bill and see how much they charge per Kw/h. Multiply your unit's Kw/h * hours per day operation * rate = the cost per hour !

Example

0.4 kh/w * 10 hours * 0.07 (7 cents) = 28 cents per day!