How Many Watts Does A String Of Christmas Lights Use?
How Many Watts Does A String Of Christmas Lights Use? A string of 25 incandescent C9 bulbs — the big plump ones often used outdoors — uses 175 watts of electricity, which works out to a whopping $15.12 to run over a season (assuming 12-hour-a-day operation for 45 days). How many watts do LED string