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Old 11-21-2011, 02:28 PM   #1
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cost of heating


heater is 1500 watt brokendown into 600w switch,900w switch or both switches on is 1500w.

how can you estimate the difference in cost to run 600w an hour as opposed to the 1500w per hour?

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Old 11-21-2011, 02:55 PM   #2
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(600w)/(1500w)=.4= 40%

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Old 11-21-2011, 05:09 PM   #3
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You see....there was a reason for taking those math classes in school.....
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Old 11-21-2011, 06:31 PM   #4
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watts * time/1000 =kwHr. KWhrs * rate per KW = cost.
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