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A mobile shredder comprises a truck having an enclosure providing a storage volume for storage of shredded material, and a rotary shredder mounted in the enclosure outside the storage volume. A prime mover is disposed in an engine/transmission compartment of the truck. An electric motor is disposed

A mobile shredder comprises a truck having an enclosure providing a storage volume for storage of shredded material, and a rotary shredder mounted in the enclosure outside the storage volume. A prime mover is disposed in an engine/transmission compartment of the truck. An electric motor is disposed outside the engine/transmission compartment and has an output shaft mechanically coupled to an input shaft of the rotary shredder. The rotary shredder is driven solely by the electric motor. An AC generator disposed outside the engine/transmission compartment is driven by the prime mover to generate the electrical power that powers the electric motor. The AC generator is configured to have a rated power output of about 90 to 180 kVA. The rotary shredder is configured to have a shredding capacity of 3000 to 6000 pounds per hour of typical mixed office waste when continuously operated at a nominal rated speed.

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What is claimed is: 1. A mobile shredder for shredding documents and other materials, comprising: a truck having a truck body defining an enclosure, and including a partition in the enclosure that divides a storage volume from the remainder of the enclosure for storage of shredded material in the s

What is claimed is: 1. A mobile shredder for shredding documents and other materials, comprising: a truck having a truck body defining an enclosure, and including a partition in the enclosure that divides a storage volume from the remainder of the enclosure for storage of shredded material in the storage volume; a prime mover disposed in an engine/transmission compartment of the truck, comprising an internal combustion engine and a transmission for propelling the truck along the ground; a shredder mounted in the enclosure outside the storage volume, the shredder having an input shaft that, when rotated, drives the shredder for shredding material; an electric shredder motor disposed outside the engine/transmission compartment and having an output shaft mechanically coupled to the input shaft of the shredder such that operation of the electric shredder motor causes the output shaft to rotate the input shaft of the shredder for shredding material fed into the shredder, whereby the shredder is driven solely by mechanical power provided by the electric shredder motor; an AC generator system driven by the prime mover for generating the electrical power that powers the electric shredder motor, the AC generator system comprising a power takeoff (PTO) unit mechanically coupled with the prime mover for extracting mechanical power from the prime mover, and an AC generator disposed outside the engine/transmission compartment, the PTO unit being mechanically coupled with the AC generator for rotatably driving the AC generator by the mechanical power extracted from the prime mover; a power distribution module electrically connected to the electric shredder motor for distributing electrical power to the electric shredder motor; and a manual transfer module electrically connected between the AC generator and the power distribution module, the manual transfer module being structured and arranged to be connected to an electric utility grid to receive electrical power therefrom, such that electrical power for powering the electric shredder motor is selectively obtainable either from the grid or from the AC generator when the manual transfer module is not connected to any grid. 2. The mobile shredder of claim 1, wherein the PTO unit is coupled with the AC generator via a coupling mechanism, an input to the coupling mechanism being rotated by the PTO unit at an input rotational speed, and the coupling mechanism having an output that rotates at an output rotational speed the same as or different from the input rotational speed, wherein the coupling mechanism drives the AC generator at the output rotational speed. 3. The mobile shredder of claim 2, wherein the ratio of output to input rotational speed in the coupling mechanism is approximately 1.1:1 to 1.5:1. 4. The mobile shredder of claim 1, wherein the AC generator is configured to have a rated power output of about 90 to 180 kVA. 5. The mobile shredder of claim 4, wherein the shredder is configured to have a shredding capacity of 3000 to 6000 pounds per hour of typical mixed office waste when continuously operated at a nominal rated speed. 6. The mobile shredder of claim 1, further comprising a bin lift and dump mechanism operable to lift a bin containing material to be shredded and dump the material from the bin into an infeed hopper leading to the shredder. 7. The mobile shredder of claim 6, further comprising an electric motor driving the bin lift and dump mechanism and powered by electrical power from the power distribution module and manual transfer module. 8. The mobile shredder of claim 1, further comprising a discharge conveyer arranged to receive shredded material from the shredder and discharge the shredded material into the storage volume. 9. The mobile shredder of claim 8, further comprising an electric motor driving the discharge conveyor and powered by electrical power from the power distribution module and manual transfer module. 10. The mobile shredder of claim 1, wherein the shredder comprises a single-shaft rotary shredder having a rotor supporting cutters and arranged proximate a stationary counterknife such that a space for receiving material to be shredded is defined between the rotor and the counterknife, and further comprising a ram disposed above a surface onto which material to be shredded is deposited from the infeed hopper, the ram being controllably extendable for advancing material to be shredded along said surface into the space between the rotor and the counterknife. 11. The mobile shredder of claim 1, further comprising a live floor in the storage volume and operable to progressively move shredded material in the storage volume rearwardly. 12. The mobile shredder of claim 1, further comprising a variable-frequency drive operable to control a speed of the electric shredder motor. 13. The mobile shredder of claim 1, wherein the shredder is located forward of the partition in a forward space of the enclosure, and further comprising a discharge conveyor arranged for receiving shredded material from the shredder and conveying the shredded material rearwardly through an opening in the partition into the storage volume. 14. The mobile shredder of claim 13, wherein the discharge conveyor comprises an auger rotatable about an axis, and wherein the auger is oriented with the axis upwardly inclined relative to horizontal in a rearward longitudinal direction such that the shredded material is moved upwardly as it is conveyed rearwardly into the storage volume. 15. The mobile shredder of claim 1, further comprising a door in the partition for access by maintenance personnel to the shredder.