Patent ID: 7119457

Claim:
A method of supplying electrical power to a plurality of electrical loads, wherein each electrical load is interconnected with a primary source of electrical power, comprising the steps of: supplying electrical power from an auxiliary power source upon a discontinuation in the supply of power from the primary power source; continuously monitoring the total load on the auxiliary power source; sequentially supplying power to the plurality of electrical loads from the auxiliary power source in a first power supply sequence, in accordance with an order of priority; during the first power supply sequence, discontinuing the supply of power to lower priority one of the electrical loads in the plurality of electrical loads from the auxiliary power source in the event the total load on the auxiliary power source exceeds a predetermined threshold when power is supplied to the lower priority one of the electrical loads; continuing to subsequently sequentially supply power to the plurality of electrical loads from the auxiliary power source in the first power supply sequence in accordance with the order of priority when the total load on the auxiliary power source falls below the predetermined threshold, to restore the supply of power to the lower priority one of the electrical loads; wherein the first power supply sequence terminates when all of the loads in the plurality loads are supplied with power from the auxiliary power source; discontinuing the supply of power to all of the electrical loads in the plurality of electrical loads when, after termination of the first power supply sequence, the total load on the auxiliary power source exceeds the predetermined threshold; and subsequently supplying power to the plurality of electrical loads in a second power supply sequence, in accordance with the predetermined order of priority.