HC Deb 19 March 1973 vol 853 c6W
Mr. Skeet

asked the Secretary of State for Trade and Industry in view of the need to protect consumers, whether he will publish the effect of voltage reductions on the life of electric lamps; and whether he is satisfied that the declaration of life hours being given on lamps at present is materially correct.

Mr. Anthony Grant

One of the effects of reducing the supply voltage to an electric lamp is to increase its life. Most electric lamps of conventional type are manufactured in accordance with British Standard specifications as stated in manufacturers' literature. I have no evidence which would suggest these specifications are not being met.