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ELECTRIC LIGHTING

SPECIFICATIONS

ELECTRIC LIGHTING

SPECIFICATIONS.

The outline given below is one that the 1. Working author has often found convenient for outline. use in checking a specification, or for reference in outlining the points to be taken up in detail in making up a specification.

In those cases where a formal specification is not required, as sometimes occurs in the case of a preliminary specification or a specification for a small isolated plant or wiring job, the necessary data for estimates and bids can often be easily and rapidly dictated, item by item, as suggested by these headings, with little liability of making any important omissions.

Dynamos and erection.
Storage batteries and erection,

Switchboard.
Plant to

e Interior.

Wiring Exterior. com

Fixtures. prise ?

Pole line.
Engines and erection.

Boilers and erection.
| Piping and erection.

| Direct current.

Alternating current. | Constant current.

Constant potential.

| High potential. Incandescent. į Low potential. System ? }

| Series,
Two wire.
Three wire.
( Combination.

| Direct current.
Arc.

7 Alternaiing current.
| Combination of arc and incandescent.
Number.
Capacity in volts and amperes.
Series.
Shunt.
C.,mpound.
Self-excited.
Separately excited.
Hand regulated.
Automatically regulated.

Direct-connected or belted.
Dynamos ? Foundation.

Pressure (Hand.
Regu-

lators. | Automatic, Amperemeters.

Voltmeters.
Regulating Galvanometers.
instruments. | Indicators.

Shunts.
Equalizers,
Compensators.

Impedance coils.
| Renewal parts. (Synchronizers.

[blocks in formation]

Size.

Design.
To be wired how.

See dynamo regulating instruments.
Lightning arresters.
Ground detectors.
Testing sets.

| Plug.
Snap.
Knife.
Automatic.

Breakdown.
Instru-

Single pole. | Throwover. ments. Switches. {Double“ į Dy n a mo

Three wire. changing.

Circuit chang

Switchboards?

ing.

Short circuit

ing:

| Reversing, etc. (Single pole. (Fusible.

Double" Automatic. (Three wire. ( Magnetic.

Cut-outs.

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