I think this is a series of posts on resource use. I have another post on water coming soon. But onward to electricity!
A while ago, we were discussing phantom load, which is the electrical power you use from having something plugged in, but not turned on. I suggested based on my experience with burning out a generator in the wilderness that having a few simple items plugged in (but not on) that all items used power when plugged in.
Anne P. and Scott wondered if phantom load only existed with items with the “wall wart,” like cell phone chargers or fancy lamps, not simple items. So, eventually, I borrowed a Kill-a-Watt from my dad to measure energy consumption of simple items.
Here’s the Kill-a-Watt measurement before I plugged in anything. It shows just around 120 Volts (120.1Volts) right at the outlet, which is appropriate.

Now I plugged in my cell phone charger, which has a “wall wart.” The Kill-a-Watt reads 123.4 Volts, which is what we expected. There’s nothing at the end of the cell phone charger. No phone. Nothing. The Kill-a-Watt shows that the cell phone charger is just using electricity because it’s plugged in.

And then I plugged in a series of other simple objects (all set to off), including a lamp. This cheap lamp apparently does use a little bit of electricity when plugged in, but off (120.9 Volts). Not as much as a cell phone charger, but still some. And this explains how I was able to burn out a generator in a cabin in the wilderness having only simple appliances plugged in and not on (a CD player and coffee pot without any visual displays).

Now this wasn’t particularly scientific. We have an old house with some old wiring. And the Kill-a-Watt seemed to record different amounts when I ran this little experiment again. So with my dad’s permission, I can lend you the Kill-a-Watt through the mail to expand our sample size of items with and without wall-warts. It’s made in China, of course, and is the sort of toy you can use for a couple of weeks before you’ve measured everything in the house three times; it’s ideal for lending. Just leave a comment here if you want this great device.
And why does anyone care about phantom load? Many people are trying to reduce their use of electricity because most electricity power plants in the United States burn coal, which releases greenhouse gases, which in turn warm the planet. So by using less electricity, you are trimming your own electricity bill as well as contributing a bit less to global warming.
How can you apply your knowledge of phantom load to the workplace? I’ll tell you what I do, and you can adapt from there. I simply unplug appliances that I rarely use (like the dreadful fax machine and printer). If you share an office with many people, you’ll need to check before doing much unplugging. Being mindful of your energy use seems part of general mindfulness at work.