| 摘要 |
An electrical supply controller has a switch (9) for selectively coupling and decoupling an electrical supply (3) to a hot water immersion heater (11). A first current sensor (19) detects when an electric current delivered from a renewable source of electricity (2), such as a photovoltaic panel, exceeds a first threshold current. A first wireless transmitter (22) transmits a first signal in response to the electric current exceeding the first threshold current, and a wireless receiver (25) is arranged, in response to receiving the first signal, to cause the switch (9) to couple the electrical supply (3) to the output (10). A second current sensor (20) detects when an electric current delivered to an electrical device (15), such as a kettle, exceeds a second threshold current. A second wireless transmitter (23) transmits a second signal in response to the second current sensor (20) detecting the electrical current exceeding the second threshold current. In response to receiving the second signal, the wireless receiver(25) causes the switch (9) to decouple the electrical supply (3) from the hot water immersion heater (11). |
