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Originally Posted by drh4683
Here's some useless trivia for you:
Perhaps some of you have wondered how much energy is used to illuminate this sign due to the flood bulbs on it. Here you go, I took a count and come up with roughly 609 flood bulbs per side (+/- 10 bulbs) that counts to 1218 total. Lets assume each flood is 150 watt, that means this sign would consume a total of 182700 watts, or 182.7 kW. ComEd charges $.09 per kilowatt hour (kWh). To operate this sign, not including the flourecent bulbs that light up the slogan, it would cost $16.44 per hour. I remember that sign being on all day long. So, for 24 hours it would cost $394.56 per day which counts to $11836.80 in a month of 30 days. Remember, this would be 2006 prices! energy cost in 1998 were about $.07/kWh when this sign was last on. So when the sign was last on, it was costing Zenith $12.79 per hour.
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woooow... 182.7 Kw
One heck of a weenie roast. If the sign handled that much power it would melt!
I recall lamps used for signs, like the typical marquee above the old theater, used a 5 Watt 130 volt pyrex bulb rated at 5,000 hours. So, that would be 150/30=5, or 182.7/30 = 6KW, that's more like it. Bulbs strung in series pairs to run the sign at 220 volts. Approx 25 Amps to operate sign based on your bulb count...and a more reasonable wattage of bulb!
. About 50 cents per hour to operate.