Зображення сторінки
PDF
ePub

ble cut-out for each outlet, protecting both sides of the circuit.

104. Wiring

This contractor shall attach sockets by and åttachi in Sockets means of a (suitable gas attachment) to the Already in (gas) fixtures already in place. These fixtures

.

shall be properly insulated, and shall be wired in the following manner:

with At each outlet a suitable cut-out shall be provided, protecting both sides of the circuit. In each socket shall be placed the proper lamp, and all shades shall be attached.

105. Suspen

sion of Sockets 2014

Lams.

Sockets and lamps shall be suspended by means of

pendants from the ceiling. Each pendant to be -- in length (provided with a cord adjuster) and protected by a double-pole ceiling cut-out. Both at the cutout and in the socket the cord shall be knotted so that in no case will the weight come on the binding screws.

Where the cord passes through the neck of the socket it shall be protected by a -- bushing. In each socket shall be placed the proper lamp, and all shades shall be attached.

[ocr errors][merged small]

This specification is identical with the twowire specification, except in “System,” p. 77, sec. 84, in place of which insert the following:

106. System.

All Feeders

s risers ?

and mains shall be figured feeders on the basis of the three-wire system, but the distribution circuits shall consist of two wires only except to outlets for a group of

c. p., lamps or more, and for special circuits specifically mentioned. Care shall be taken in arranging the distribution circuits to have the same number of lamps on each side of the system, 'and that no circuit shall be connected across the outside wires. The neutral wire shall in all cases be properly tagged and shall be run between the outside wires.

|
Three-Wire System Adapted to the Two-Wire

System.

This specification is identical with the twowire specification, except in “System," p. 77, sec. 84, in place of which insert the following:

All

and mains shall consist of 107. System. feeders s three wires, but the neutral wire shall consist of two wires, each equal in cross-section to the outside wires, or of one wire equal in cross-section to the outside wires combined, in order that if desired ali lights may be operated on the two-wire system; if two neutral wires are run they shall be permanently connected at each cut-out box. All distribution circuits shall consist of two wires only except to outlets for a group of

[ocr errors]

lamps or more, and for special circuits specifically mentioned. In all three-wire distribution circuits the neutral shall be equal in cross-section to the two outside wires combined. Care shall be taken in arranging the distribution circuits to have the same number of lamps on each side of the system and that no circuit shall be connected across the outside wires or between the neutral wires. The neutral shall in all cases be properly tagged and shall be run between the outside wires.

Arc System.

108. Circuits.

The lights shall be divided into the follow-
ing circuits:
Circuit No. 1 (Number of lights and location.)
No. 2 (

), etc.

[ocr errors]
[ocr errors]

66

109. Insulation of Wire.

All wire used in the installation shall be insulated with £' for inside circuits, and with for outside circuits.

110. Insulation Reşist

ance.

Each circuit shall test out with an insulation resistance of at least ohms.

[blocks in formation]

112. Method of Wiring.

All interior wires shall be run
Son insulators /

in such a manner that the in conduits S

highest possible insulation is obtained. All wiring shall be neat in its mechanical appearance and arrangement. All exterior wires shall be run

sion of

In the interior of the building(s) the lamps 113. Suspen specified shall be suspended from — securely Lamps. fastened to the ceiling (and provided with a suitable device for raising and lowering). On the exterior of the building(s) the lamps specified shall be suspended from —, securely attached to --, (and provided with a suitable device for raising and lowering).

(Add details concerning any posts, polesteps, ornamental treatment desired, etc.)

Conduit System. Two-Wire.

No wires shall be run in contact with any 114. Method

of Wiring. part of the building material, but the building shall be equipped from the source of supply to each outlet with the insulating conduits of

in such manner as to provide continuous channels or raceways for the wires. The continuity of each tube employed for this purpose shall be such as would be required if it were to be used for conveying water or gas. Strict compliance with this requirement will be demanded.

In order that every wire may be at all times 115. Accessi

bility. accessible for inspection, repairs, or renewals

without injury to the building, the location, sectional division, joining, intermediate and terminal elbowing, the placing of switches, cut-outs, and junction boxes, and the final emergence of the tube beyond the finished surface at the fixture outlet shall be done in strict compliance with this specification.

116. Appli.

ances.

All appliances employed shall be such as are especially adapted for use in conjunction with the conduit system.

117. Placing of Conduits.

All conduits shall be placed in position

sex tlxnnel

before the plastering is done, and shall be confirmly secured within}

walls and ceil

ings.

[blocks in formation]

121. Insula

tion.

All single conductors shall be insulated with

All duplex conductors shall be insulated with Duplex conductors and all single conductors larger than

. & S.

B: W. G. shall be stranded.

[blocks in formation]
« НазадПродовжити »