Зображення сторінки
PDF

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

Hms. Aus This contractor shall attach sockets by

Voputnres means °f a (suitable gas attachment) to the A'inace(£as) 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.

1Msiono?n' Sockets and lamps shall be suspended by

^shims*tm4 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.

Three - Wire System.

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

[merged small][merged small][ocr errors][merged small][merged small]

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:

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 all 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 , c. p.,

[graphic][merged small]

Arc System.

io8. circuits. The lights shall be divided into the following circuits:

Circuit No. 1 (Number of lights and location.)
No. 2 ( " "),

etc.

ion oi wire wire used in the installation shall be

insulated with 'for inside circuits, and

with —— for outside circuits.

no. insula- Each circuit shall test out with an insulation Resist- .

ame. tion resistance of at least ohms.

in. Joints. See p. go, sec. 92.

nf Method All interior wires shall be run

{in^dufr} in such a manner that the highest possible insulation is obtained. All wiring shall be neat in its mechanical appearance and arrangement. All exterior wires shall be run .

In the interior of (the) building(s) the lamps 113. snspen

specified shall be suspended from securely Lumps.

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 in. Method part of the building material, but the building ot w rl"s' 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 accessible for inspection, repairs, or renewals

115. Aecessi bility.

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.

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

m. Placing All conduits shall be placed in position

of Conduits. x r

I after6 [ P^astermS is done, and shall be firmly secured j

within \ walls and ceil"

ings.

us outlets (See p. 77, sec. 83.)

and Lights. \ r J I

119. system. (See p. 77, sec. 84.) "S^ESSF (See p. 77, sec. 85.)

121'tion"la AW single conductors shall be insulated

with . • All duplex conductors shall be

insulated with . Duplex conductors and

all single conductors larger than

| B W^G [ sha11 be stranded.

122. Insulation /a no ow \

Resistance. (See p. 78, sec. 87.)

« НазадПродовжити »