Quote:
Originally Posted by masraum
Good eye! What about screen No 64? Both 4 and 64 have units of kW.
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Quote:
Originally Posted by rockfan4
The first screen matches the serial number printed right above it.
Screen 2 looks like the date.
Screen 3 is likely the time.
I believe screen 4 is the number you need to watch.
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Quote:
Originally Posted by rockfan4
It's a smart meter, and 64 displays "prev kw", so that might be the reading 24 hr ago, or maybe the last time the meter was remotely read. I guess if Shaun takes a set of photos at the same time tomorrow, and screen 64 now reads 85398, we'll have that answer.
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rockfan4 and masraum are correct; here's some additional info:
1) meter serial #
2) date
3) time
4) current kVA (rate -- not really useful for measuring usage unless you also know power factor; this will fluctuate throughout the day)
5) current (total) kWH -- this is what you want to record
6) current kW (rate -- this will fluctuate throughout the day)
7) previous kVA (probably previous day; see item 4 above)
8) previous kWH (probably previous day); if you subtract this number from #5 you get 2400 kWH (85398-82998). 60 days @ 2,400/day = 144,000 kWH for 2 months; within ~18% of the 175,000 kWH you mentioned.
9) previous kW (rate)
10) ??
FWIW, here in Nevada our base electricity rates are in the lower range of markets in the country. 175,000 kWH over two months here would cost (two-phase residential) over $9,500/month.
Where I used to work (Portland General Electric) we'd capture readings every 15 minutes for the vast majority of smart meters. Any customer could download ~2 weeks' worth of their usage data; I'd dump that into Excel and analyze what time & which days we used more/less electricity in 1/4-hour increments. If I really had some extra time, I'd overlay hourly temperatures. I am (was) a data geek. You might want to check your utility's online portal for something similar.
Is this for a commercial building?