PACIFIC RAILWAY, PRINCE RUPERT, BRITISH COLUMBIA. 219 
GENERATORS. 
Electric generators are to have a capacity of 600 kilowatts, 3-phase, 
25-cycle, 550-volt alternating current. For these generators there will be 
provided two steam-driven exciters, one of 50 kilowatts and one of 25 kilo- 
watts capacity. These machines are to be direct current, 220 volts. There 
is also to be a motor-driven exciter of 25 kilowatts capacity, the motor for 
this machine to be a 35 horse-power, 3-phase, 25-cycle, 550-volt alternating- 
’ current squirrel-cage-type motor. 
CRANES. 
There will be provided for the erection of this machinery in the power 
plant, a 15-ton overhead traveling crane. This will be operated by elec- 
tricity and the current supplied will be from one of the steam-driven exciter 
sets. 
AIR COMPRESSOR. 
For furnishing compressed air to the shops of the plant, there will be 
provided a compound Corliss air compressor having a displacement of 1,580 
cubic feet of free air per minute when operating at 150 revolutions. ‘This 
compressor is to be designed for a steam pressure of 175 pounds per square 
inch and for an air pressure of 100 pounds. The distribution of the air will 
be by means of underground piping through the yard. 
SWITCHBOARD AND DISTRIBUTION SYSTEM. 
The entire system of light and power throughout the plant is to be 
controlled from the switchboard located on the main floor of the power- 
house. The arrangement of the wiring diagram for the entire distribution 
is shown in Plate 110. The switchboard is to consist of 15 panels. ‘The 
construction throughout is to be most substantial and thorough, fully meet- 
ing the best standards of central station distribution. 
CUT AND FILL, AND FOUNDATIONS. 
By referring to Plate 107, showing the natural conditions of the site, it 
will be seen that the ground is very difficult, all the property either having 
to be cut down or raised to grade by fill. The location of the power-house 
was determined by the condition of the ground, which, at this location, is 
of rock which will have to be reduced to the grade required. The cut and 
