This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...are estimated to demand a maximum of about 4000 horsepower for a period of 2V2 hours, whenever the dry dock is unwatered. The Balboa coalingplant demand, although not as severe as the larger Cristobal counterpart, is nevertheless of considerable magnitude. The normal load of the Balboa shops is comparable to an ordinary machine shop working a portion of the tools only, and the abnormal demand will occur when the shops are used for repair work in times of maximum activity. The motor-driven pumps for the water-works system of Balboa, Ancon and the City of Fig. 6. Gatun Substation. The building is of rectangular design to accommodate four 2000-kilowatt transformer equipments. Panama will demand a relatively constant supply ranging over many hours, similar to installations furnishing water to a diversified community. In addition to the above load there is a demand for general purposes, including the lighting system of Balboa and Ancon, and furnishing, temporarily, power for the Panama tramways system. Gamboa Substation. The permanent water supply for the southern end of the Canal towns is obtained from Chagres River Valley, east of the Canal, where the Gamboa pumping plant is installed. The substation consists of two 500-kilowatt transformers and the auxiliary equipment for transforming the transmission line volt Fig. 7. Oatun Substation. Oil'cooled transformers of the Radiator Type. Capacity 2000 kilowatts, 2200/ 44,000 volts. age from 44,000 to 2200 volts, three-phase at the bus. A 2200volt feeder is carried to the gravel wharf, where it is transformed by a rotary converter equipment to 550 volts direct current for use of the unloaders. This equipment was originally used at the Balboa sand wharf. Darien Substation. A high-powered wireless...