Page:Incandescent electric lighting- A practical description of the Edison system.djvu/103

 each part of the district. This plant maintains its distribution and regulation thereof by balancing within itself. No feeder equalizers are here used for feeder regulation; the uniting and tying up of the system, together with the use of the auxiliary bus effects this regulation. All circuits of this plant are underground, there being about twenty-five miles of underground conductors. These have given perfect satisfaction and reliability in their workings, maintaining to-day an insulation on the system as a whole of over half a megohm.

On the rear of the second floor are located the coal storage, water-tanks and feed-water heater. On the top floor we have the offices, supply rooms and workshops of the company. Returning downstairs again we find in the basement ash-pits, smoke flues, pump-rooms, two large coal-storage vaults, giving a total capacity for storage of over 1,000 tons, air-blast for forced draft and other details in connection with the steam plant.

We have, therefore, here, in a building