ing factors--Fluctuations in water
supply--The average plant--The actual plant--Amount
of current required for various operations--Standard
voltage--A specimen allowance for electric
light--Heating and cooking by electricity--Electric
power: the electric motor 121

CHAPTER VII

TRANSMISSION LINES

Copper wire--Setting of poles--Loss of power in
transmission--Ohm's Law and examples of how it is
used in figuring size of wire--Copper-wire
tables--Examples of transmission lines--When to
use high voltages--Over-compounding a dynamo to
overcome transmission loss 153

CHAPTER VIII

WIRING THE HOUSE

The insurance code--Different kinds of wiring
described--Wooden moulding cheap and effective--The
distributing panel--Branch circuits--Protecting the
circuits--The use of porcelain tubes and other
insulating devices--Putting up chandeliers and
wall-brackets--"Multiple" connections--How to connect
a wall switch--Special wiring required for heat and
power circuits--Knob and cleat wiring, its advantages
and disadvantages 172

CHAPTER IX

THE ELECTRIC PLANT AT WORK

Direct-connected generating sets--Belt drive--The
switchboard--Governors and voltage regulators--Methods
of achieving constant pressure at all loads:
Over-compounding the dynamo; A system of resistances
(a home-made electric radiator); Regulating
voltage by means of the rheostat--Automatic
devices--Putting the plant in operation 192

PART III

GASOLINE ENGINES, WINDMILLS, ETC.
THE STORAGE BATTERIES

CHAPTER X

GASOLINE ENGINE PLANTS

The standard voltage set--Two-cycle and four-cycle
gasoline engines--Horsepower, and fuel
consumption--Efficiency of small engines and
generators--Cost of operating a one-kilowatt plant 217

CHAPTER XI

THE STORAGE BATTERY

What a storage battery does--The lead battery and the
Edison battery--Economy of tungsten lamps for
storage batteries--The low-voltage battery for
electric light--How to figure the capacity of a
battery--Table of light requirements for a farm
house--Watt-hours and lamp-hours--The cost of storage
battery current--How to charge a storage
battery--Care of storage batteries 229

CHAPTER XII

BATTERY CHARGING DEVIC