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The paper discusses the pros and cons of the standardizing of designs for overhead lines up to 33 kV, and concludes that this can be done in a rational manner which will avoid any likelihood of stultification of new ideas. The preparation of suitable standard designs of overhead lines could be undertaken by a standing B.S.I. Committee in the usual way. Some of the Electricity Commissioners' Regulations are reviewed, with particular reference to their latest modifications for light lines. Details are given of the design for light h.v. lines up to 22 kV which has been evolved by the E.R.A. and which is now being considered by the B.S.I. Its adoption as a standard is recommended. With slight modifications, this design is shown to be adaptable for 33-kV working and also for heavier conductors. An alternative design, employing wood Â¿HÂ¿ poles and suspension insulators, is suggested for special cases. A low-voltage design is also detailed and recommended. Finally, closer co-operation with the Post Office and the railway companies is urged.