초록 ▼

An electric range is connected in series with first and second current sensing relays between power lines having 230 volts a.c. therebetween. An electric dryer is connected in series with normally closed contacts associated with the first current sensing relay between the first and second lines. A w

An electric range is connected in series with first and second current sensing relays between power lines having 230 volts a.c. therebetween. An electric dryer is connected in series with normally closed contacts associated with the first current sensing relay between the first and second lines. A water heater is connected in series with normally closed contacts between the first and second lines and with normally open contacts between the first and a third neutral line. Both the latter contacts are associated with the second current sensing relay. The first current sensing relay operates at a first threshold level of current drawn by the electric range to open the normally closed contacts in series with the electric dryer. The second current sensing relay operates at a second threshold value higher than that of the first to open the normally closed contacts and close the normally open contacts in series with the electric water heater.

대표청구항 ▼

Peak load limiting apparatus for limiting the electrical power required by first second and third appliances comprising, energy sensing means for sensing the electrical energy drawn by said first appliance, means responsive to the energy drawn by said first appliance exceeding a first predetermined

Peak load limiting apparatus for limiting the electrical power required by first second and third appliances comprising, energy sensing means for sensing the electrical energy drawn by said first appliance, means responsive to the energy drawn by said first appliance exceeding a first predetermined threshold for reducing the energy drawn by said second appliance, said energy sensing means including means for sensing when the energy drawn by said first appliance exceeds a second threshold greater than said first threshold, and means responsive to said energy sensing means sensing said first appliance drawing energy in excess of said second threshold for reducing the flow of energy to said third appliance.