Size wire for motor line.
A method of slotting joist for the reception of a conduit.
A Hydro-electric station of the Cedar Rapids (Canada) Manufacturing and Power Company.
Losses in a non-condensing steam plant.
Flexible steel armored cable.
This street sprinkler provided a slot which gradually widened from one end, and featured a valve for…
A small "standard-unit" switchboard for two compound-wound direct-current generators and seven feeders.
Front view of a switchboard panel for a single compound-wound direct-current generator.
Unit switchboard panels for 600-volt, direct-current, railway service.
Water tanks are liquid storage containers, these tanks are usually storing water for human consumption.…
Symmetrical arrangement of conductors; an example of a three-phase circuit.
A high-speed simple engine belted to a small, three-phase generator.
Perspective view of the typical 2400-volt, three-phase switchboard for power and lighting service in…
The four-wire, three-phase system.
An illustration of a water tower.
An open, portable transformer with inserted cable.
An air-blast transformer installation.
A typical transformer sub-station.
Pictured is a tree trimmed by linemen.
Runner of a mixed-flow turbine.
Arrangement of the electrical equipment in a modern steam-turbine generating station.
Sectional elevation of the 31,000 h.p. turbo generator units used in the Yadkin River development (North…
A schematic diagram for an ungrounded neutral three-phase electrolytic protector.
Sectional elevation through the cylinder of a Skinner-poppet-valve uniflow engine.
An automatic voltage regulator for small capacity exciters mounted on a 31 inch panel for insertion…
The water-cooled transformer.
A gravity-type waterwheel, the most efficient wheel for very low heads and small quantities of water.
An illustration of a stone well.
A Westinghouse oil-insulated, self-cooling choke coil for pressures from 25,000 to 70,000 volts.
A Westington electrolytic protector for a three-phase, ungrounded neutral 22,000-volt circuit.
Windmills stand along a canal. The are probably polder mills used to move water up and out of lowlands,…
A wireman running flexible armored cable in a flooring space.
A method of running wires past bracing.
Wiring where a panel box is necessary.
Wiring a small frame building.
Exploring a wiring space with flash lamp and mirror.
The principles of operation of the Wright demand meter.