This is the Better of the two methods and has greater accuracy.
Simply plug each item of interest into your 'energy meter', the longer the Duration of the test the better.
For items like bedside clocks that have consistant power usage a test of an Hour or 2 would be fine.
items like TV's should be tested over a week
NOTE: If your billed on a timed rate or TimeOfUse tarrif try to start and finish your tests at the same time of day.
Weeks..Minute: - Required - Duration of test Note: Some meters may give duration as 276H 36Min, Energy Audit will recalc these values, and display them just below 'Minute' in both total Hours and in Week/Day/Hour/Min Format kWh Used - Required - kWh consumed over the Duration of the test Power Factor - FYI - Power Factor of item under test OffPeak Powered - Check for offPeak items, usually HotWater systems (TOU customers can use this to 'single' items out in the Item Analysis(default) window.
Calc Average WHr - The average energy usage over 1 Hour. Expressed as WattHours (1000WHr = 1kWh) Duty Cycle - The Ratio of on to off time for an item. 0% = Always off. 100% = Always on.
For Example a small stereo is tested for 13d 13h 36m (Note E.A. converts this to 325.6Hours or 1w 6d 13h 36m) and consumed 3.256kWh.
If you enter the Standby(5W) and Operating(15) Power figures then E.A. will calculate Duty Cycle.
+- slower but more accurate
Should Be done in 24 Hour Blocks