Talk:British Rail Class 402
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Horsepower
[edit]I have changed bhp (brake horsepower) to hp horsepower because this is what is shown in Ian Allan ABC of British Railways multiple units. For electric motors, the horsepower has probably been calculated on the basis of 90% of the electrical input, rather than determined with a brake. On this basis, 1 horsepower = 746 watts (mechanical output) = 746/0.9 = 829 watts (electrical input). Biscuittin (talk) 15:10, 11 April 2008 (UTC)
HAL - `half a [4] LAV'
[edit]I have heard from ex BR/SR railwaymen that HAL stood for `half a 4-LAV unit' to which these trains were equivalent, rather than referring to a unit with a lavatory in one of its two carriages. The sources that I have seen are inconclusive but reliable ones may be known to others. Barney Bruchstein (talk) 14:43, 16 November 2014 (UTC)