[PLUG-TALK] What is using electricity?

Pete Lancashire pete at petelancashire.com
Thu Jul 20 22:39:38 UTC 2017


Have you logged in to your account and either looked at usage or download
the data ? Data is in as fine as 1 hour. A waterfall graph aligned on days
can be quite informative

On Jul 19, 2017 9:57 PM, "John Jason Jordan" <johnxj at gmx.com> wrote:

> On Wed, 19 Jul 2017 19:32:02 -0700
> John Jason Jordan <johnxj at gmx.com> dijo:
>
> OK, after all the suggestions I decided to get more accurate data. I dug
> out all the bills back to October 2016, and here are the results by
> month, bill amount, total KWH, number of days billed, and KWH/day:
>
>         7/2017  $77.86  622     30      20.73
>         6/2017  $83.73  677     32      21.16
>         5/2017  $68.63  535     29      18.45
>         4/2017  $65.26  503     29      17.34
>         3/2017  $72.76  574     32      17.94
>         2/2017  $70.42  552     29      19.03
>         1/2017  $74.06  588     31      18.97
>         12/2016 $74.87  597     33      18.09
>         11/2016 $62.09  476     29      16.41
>         10/2016 $61.57  471     29      16.24
>
> Looking at the data my first comment is that it is not as bad as I
> first thought. Considering that the winter bills in the above are
> higher because of increased lighting and use of an electric blanket, my
> daily KWH for June and July 2017 should have been 16.5-18.5.
>
> Also, for the past couple of months I have been doing remodeling work,
> of which the most significant power consumption factor has been a table
> saw with a 13 amp motor. As a wild ass guess it has been running 30
> minutes a day, and I've been cutting oak, often bogging it down. (I
> love this saw, but it is hopelessly underpowered.) According to my dim
> understanding of mathematics, electricity, and electric motors, 13 amps
> at 120 volts = 1560 watts, except it probably doesn't always draw all
> of that. Guessing that its average draw is 1200 watts, that is 1.2 KWH,
> times 1/2 hour = 0.6 KWH per day, times 32 days for the June bill above
> = 19.2 KWH. That's a significant chunk, plus I've been using other
> electrical equipment as well.. [Someone please check my math and
> knowledge of motors here.]
>
> I wish all appliances were smart enough to calculate how many KWH they
> consumed while you were using them and then upload that data to your
> computer/smartphone where it could be accumulated so your electric bill
> would never be a mystery.
>
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