A 5,000-Kva Underground Substation

The Electric Building Substation whose design and installation has been outlined is operating very satisfactorily. Transformer operating temperatures are very low, and voltage regulation throughout the area served is well within allowable limits. The company was extremely fortunate in being able to take advantage of the incinerator flue to exhaust the heated air from the transformer vault, as this is always one of the major difficulties to be overcome on any large vault installation.