A house has appliances of 3 numbers of LED bulbs of each 5 W and 2 numbers of ceiling fans of each 70 W. What is the total power of their house appliances?
Answers
Answer:
Explanation:
COMMON HOUSEHOLD APPLIANCE ENERGY USE
Listed below are some common appliances, their typical or average wattage and an
estimated kilowatt. There is also a simple formula for calculating operating costs
below.
Appliance Watts Hours/Mo kWh/Mo
Air Conditioner (Room) 6,000 BTU 750 120 – 730 90 – 548
Air Conditioner (Central) 2.5 Tons 3500 240 -730 1 – 47
Ceiling Fan 65 15 – 730 1 -47
Clock 5 730 4
Clothes Dryer 5000 6 – 28 30 – 140
Clothes Washer, Automatic (With Electric Water Heating) 1800 7 -40 13 -72
Clothes Washer, Automatic (With Non-Electric Water Heating) 500 7 -40 4 – 20
Coffee Maker 900 4 – 30 4 – 27
Computer (Monitor & Printer) 200 25 – 160 5 – 32
Crock Pot 250 8 – 24 2 – 6
Dehumidifier 350 120 – 730 42 – 256
Dishwasher (With Electric Water Heating) 1500 8 – 40 12 – 60
Dishwasher (With Non-Electric Water Heating) 400 8 – 40 3 – 16
Drill 300 3 – 7 1 – 2
Electric Blanket 180 30 – 90 5 – 16
Electric Heater (Portable) 1200 30 – 90 36 – 108
Fan (Portable) 115 18 – 52 2 – 6
Food Blender 390 3 – 5 1 – 2
Food Freezer (15 cu. Ft.) 335 180 – 420 60 – 141
Frying Pan / Hot Plate 1150 10 – 20 12 – 23
Furnace Fan Motor (Intermittent) 350 160 – 415 56 – 145
Furnace Fan Motor (Continuous) 350 730 256
Heating Pad 65 15 – 30 1 – 2
Heat Tapes 200 250 – 500 50 – 100
Humidifier (Portable) 100 80 – 540 8 -54
Iron (Hand) 1000 1 – 10 1 – 10
Lighting Single Lamp (60W) 60 17 – 200 1 -12
Compact Fluorescent (60W Equiv) 18 17 – 200 3 -4
Ceiling Fixture (3 bulbs) 180 6 – 195 1 – 35
Tri-Light (Table Lamp) 100 10 – 200 1 -20
Chandelier (5 Lamp) 300 10- 183 3 – 55
Fluorescent (2 Tube 4 ft) 100 10 -200 1 -20
Microwave Oven 1000 5 – 30 5 – 30
Power Saw 275 2 – 4 6 – 1
Range 1250 10 – 50 125 – 625
Range (Self Cleaning Cycle Only) 3200 1 3
Refrigerator – Freezer Frost Free (17 cu. Ft.) 500 150 – 300 75 – 150
Refrigerator (Non Frost Free (13 cu. Ft.) 300 190 – 300 57 – 90
Sewing Machine 75 4 -14 3 –1
Stereo 30 1 – 170 .03 – 5
Television – 27” Color or Flat Screen 120 60 – 440 7 – 53
Television – 53” – 61” Projection Screen 170 60 – 440 10 – 75
Toaster 1150 1 – 3.5 1 -4
Toaster Oven w/broiler 1350 4 – 10 5 -14
Vacuum Cleaner (Portable) 800 2 – 6 2 – 5
Vehicle Headbolt Heater (Medium)* 1000 60 – 243 60 – 243
Vehicle Headbolt Heater (large car or truck)* 1500 60 – 243 90 – 365
Video Cassette Recorder / DVD 40 50 – 200 2 -8
Water Bed Heater 400 150- 300 60 – 120
Water Heater – Typical Family of 4 3800 100 -1 50 380 – 570
Water Pump (Deep well – moderate power) 500 10 – 50 5 25
Water Pump (Dee p well – higher powered) 1100 10 -50 11 -55
A 100 watt bulb burning 10 hours uses only (1) kW. In order to calculate the average operating cost for any
electrical appliance you can use the following formula:
watts ÷1000 = kW x hours of operation = kWh x kWh rate = cost
Watts can usually be found on the appliance nameplate. If the nameplate lists amp:
volts x amps = watts
Example: How much does it cost to operate a portable electric heater? Wattage is usually given on the unit itself, or
with the literature that comes with it. Our example is 1000 watts. For working purposes, let’s say you use the heater
an average of 45 hours during winter months (1/2 hour per day for the three coldest winter months) and that the
electric rate is $.10 per kWh hour.
To calculate for an 8 amp heater, the formula changes just a bit.
8 amps x 120 volts household current = 960 watts/1000 = .96 kW x 45 hours = $43. 2 kWh x
$0.10 = $4.32.
*Even in the coldest weather a vehicle only needs to be plugged in for two (2) hours.
Answer:
4.32$ ..........is correct answer