Procedure: With the use of your latest monthly electricity bill, compute for the cost of your family's electricity consumption per kWH using the formula below:

Cost per kWH = Total of monthly bill/total kWH consumed

W Common Household Appliances and Wattage: Hair dryer = 1200-1875 Aquarium = 50-1210 Watts (W) W Clock radio = 10 W Heater (portable) = 750-1500 W Coffeemaker = 900-1200 W Clothes iron = 1000-1800 W Clothes washer = 350-500 W Microwave oven = 750-1100 W Clothes dryer = 1800-5000 W Dishwasher = 1200-2400 W (using Personal computer the drying feature greatly increases CPU - awake / asleep = 120 / 30 W or less energy consumption) Computer Monitor - awake / asleep = Dehumidifier = 785 W 150 / 30 W or less Electric blanket (Single/Double) = 60 Laptop = 50 W / 100 W . Radio (stereo) = 70-400 W Fans Refrigerator (frost-free, 16 cubic feet) = 725 Ceiling = 65- W 175 W ; Televisions (color) o Projection = 170 W Window = 55- o Flat screen = 120 W 250 W ; Toaster = 800-1400 W Furnace = 750 Toaster oven = 1225 W Appliance Number of Daily Use Total Watts Total Cost Appliances Per Appliance (Monthly in kWH) Appliance Uses ( Hours) Per Hour (KW ) Use P= VxI Example 1: 6 6 h 100 Watts / - 6 Fans x 6h/ day x 0.1kW Window Fan 1000 = 0.1 kW -3.6 KWH/ day x 30 days / month - 108 KWH / month Cost per month= 108 KWH x Cost in Peso per KWH\fQUESTIONS: 1. What three appliances consume the most electrical energy at your house? 2. Does an appliance or device that has a high wattage always use the most energy over the week or month? Explain. 3. What do you think you could do to reduce the amount of energy used in your house? 4. Electrical Energy is one of the critical energy resources in our daily lives. Describe how you might replace the work of three of the appliances / devices if you did not have electricity. 5. Based on your family's projected energy usage, list two steps that can be taken to reduce your energy consumption. 6. How does the amount of leaking electricity consumption compare with the total amount of electricity used in your household? Can you think of ways to reduce the leaking (stand-by) electricity use?Choose 10 electrical appliances you are using in your house. Take note of the wattage requirement of each appliance. If No wattage specifications at the back of each appliance, calculate for the watt requirement by multiplying the Voltage and current requirements. o Note: 1 kilowatt (KW) = 1,000 Watts (W ) o Use the following formula to calculate an appliance's daily energy use: (# of Appliances [ of the same type] x Hours Used Per Day x Wattage Per Hour) + 1000 = Daily Kilowatt- hour (kWh) consumption Multiply this by the number of days you use the appliance monthly. Then multiply the product by the computed cost per kWh.Materials Needed: 10 kinds of electrical appliances, Calculator and Electricity bill from MERALCO or other electricity provider