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PC age leaves us with power poser

Your expert colleague last week skated lightly over the question of how the power generation sector is to manage the reactive element of its load (Letters, last week).

In past days the problem was the inductive load, mostly of electric motors, which caused a power factor change in the opposite direction to that of capacitive devices like radios, computers or fluorescent lights, the trick being to persuade your consumers to have a judicious combination, resulting in an ideal power factor of one.

It may be that in post-industrial Britain with the serried ranks of lathes to drive being replaced by flickering PC screens, better electrical efficiency requires us to encourage more inductive loads, such as electric trains.

CHRIS MAY, Woodbine Farm, High Street, Chew Magna, Bristol BS40 8PW

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