A user has four 40W fluorescent lamps, 140W TV and audio equipment, 120W refrigerator and 880W rice cooker Q: 1. Is it suitable for the user to use the "220V, 5A" watt hour meter? 2. If these electrical appliances are used less than half an hour per day, thousands of watts of electricity can be saved in one month (30 days)?

A user has four 40W fluorescent lamps, 140W TV and audio equipment, 120W refrigerator and 880W rice cooker Q: 1. Is it suitable for the user to use the "220V, 5A" watt hour meter? 2. If these electrical appliances are used less than half an hour per day, thousands of watts of electricity can be saved in one month (30 days)?

1. The total power of electrical appliances is
Ptotal = 4 × 40W + 140W + 120W + 880W = 1300W
The rated power of watt hour meter is
P = UI = 220 × 5W = 1100W
P amount