Ques. How should feeders for motors be installed?
Ans. They should be independent of the lighting feeders.
Ques. What is the largest size of feeder that should be used?
Ans. Feeders requiring over 2 inch pipe should not be used. It is better to subdivide them, especially if there be many bends or offsets, since two inch pipe is about the limiting size for economical handling.
Ques. How should feeders be arranged?
Ans. They should radiate from a distributing panel, having a proper sized switch and fuse for each feeder.
If the system of wiring be such that auxiliary power is taken from a local lighting company, it is a good plan to have each circuit controlled by a double throw switch so that in case of overload any circuit can be fed from the illuminating company's mains as in [fig. 1,000].
Fig. 1,001.—Sectional view showing method of cutting a pocket or opening in floor for the insertion of wires.