What device is installed by the supply authority to monitor off-peak usage for storage heaters?

What device is installed by the supply authority to monitor off-peak usage for storage heaters?

• A. Time switch
• B. Off-peak meter
• C. Circuit breaker
• D. Thermostat

Answer: (B)

Off-peak electricity is billed at a lower rate, so the supply authority installs a dedicated meter to measure how much energy you use during the off-peak period. This meter records off-peak consumption separately, letting the utility apply the cheaper tariff to storage heaters that heat during those hours and release heat later. A time switch might be used to ensure the heater only draws power in the off-peak window, but it doesn’t track usage. A circuit breaker protects the circuit, and a thermostat controls temperature, neither of which measures off-peak consumption. So the device used to monitor off-peak usage is the off-peak meter.

Off-peak electricity is billed at a lower rate, so the supply authority installs a dedicated meter to measure how much energy you use during the off-peak period. This meter records off-peak consumption separately, letting the utility apply the cheaper tariff to storage heaters that heat during those hours and release heat later. A time switch might be used to ensure the heater only draws power in the off-peak window, but it doesn’t track usage. A circuit breaker protects the circuit, and a thermostat controls temperature, neither of which measures off-peak consumption. So the device used to monitor off-peak usage is the off-peak meter.