How much power does a 120v 15A lighted switch use anyway? - Page 3

 

On Tue, 18 May 2010 17:08:57 +0000 (UTC), Glenda Copeland


It's one of those things on the end of a power cord, that's bigger
than a plug. Makes it look like some sort of fungus is growing on the
wall. These are usually power supplies, but can be other things like
remote controls and GFCI adapters.

 

On Mon, 17 May 2010 23:56:13 -0400, mm wrote:


Using California electric rates, I get, for a single switch, 31¢/year?

1switch x 24hours/day x365days/year x 35¢/KW x .1W x 1KW/1000W

We have tiered pricing out here where the first week or so costs about
11¢/KW, the next week is about double, and the last two weeks of the month
it's more than 4 times as much so I averaged that to about 35¢/KW.

 

On Mon, 17 May 2010 21:30:35 -0600, WW wrote:


Our utility prices are 11 cents (¢) per kilowatt (KW) for the first KW of
the month but 48¢ for the last two or three weeks' worth of kilowatts. I
would guess the average KW out here to then be about 35¢.

So, if I add a dozen of these lighted switches, and they're on most of the
day, say, 20 hours per day for 30 days in a month, at .096 watts per hour,
that comes to about a penny per day, I think.

12switches x 20hours/day x 30days/month x 0.1watts x 35¢/KW x 1KW/1000W =
25¢/month

 


  I have had a lighted switch at my day job.  It had a high intensity neon
lamp, apparently either C2A (NE-2H) or A1C ("mini NE-2H) (hard to tell
through the switch).  Figure about 1/4 watt.

 - Don Klipstein (don@misty.com)

 

Glenda Copeland wrote


Not enough to worry about.