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Quote: "The power steering doesn't run continuously does it? Seems like electric PS would operate as needed, rather than an engine driven pump."
I think you're right, as hinted at by the system load data, rounded:
Engine Off, Accessories Off = 116 Watts
Engine Idling, Accessories Off = 256 Watts
Power Steering Rated Load = 246 Watts
So, when the engine is running and the electric power steering is not actually assisting in turning the wheels to steer, the electric power steering is, at most, using only some fraction of its full draw, perhaps as much as half but certainly nowhere near its full load demand.
I believe the electric steering is considered a net energy saving device compared with hydraulic power steering with its pulley, pump, etc.
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