High-tension outlets

The building outlet in high-tension work has become very important and will increase in importance as higher pressures are used. A great variety of outlet arrangements have been tried, each company having a method of its own. Each arrangement has its disadvantages and all are liable to give serious trouble in case of storms. Blowing rain and snow will enter the building with the open outlet, while with the bushing it is found impractical to build with glass or porcelain to sufficient size to obtain the necessary surface resistance. Plate glass with holes through the center for the wires, which are supported on line insulators, has proved a serious menace, owing to the leakage setting fire to timber construction, and the formation of an are in metal construction.