Lamp rerating is modelling the predicted properties of a filament lamp when running the lamp at a voltage other than its specified rating, using a power...

the same light output. According to Lamp rerating formulae, reducing the voltage across an incandescent lamp by 10% reduces the power (and therefore energy)...

were rerated at 271 hp (202 kW; 275 PS) and 313 lb⋅ft (424 N⋅m) of torque. The engine however was the exact same for both these years and the rerating was...