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Street Lighting CircuitsArc or Incandescent.

181. street (Note.—The specification for the low

Lighting Cir- v

cutts. potential system, p. 120, et seq., may be followed in general but the following additions and modifications should be introduced.)

182. poles. (Add to sec. 168, p. 121.)

Lamp poles shall be not less than

in length, with tops not less than in

diameter, and set of their length in

the ground.

183. Gains and (Add to SeC. 172, p. 122.)

Where there is but a single wire on a pole a bracket may be used instead of a cross-arm. Where necessary break-arms shall be used to carry wires from the line out to the lamp.

184. steps. (Note.—Steps may be desirable on lamp

poles, if so add to sec. 174, p. 123.)

sion'oi Lamps'. Lamps shall be suspended at the places located on the attached map by means of (brackets, mast-arms, cross suspension, etc.) The bottom of the lamp to be not less than above the roadway.

The lamps and fixtures must be secured against damage or interference through ordinary wind storms, and all wires so connected that there shall be a minimum danger of short-circuiting or grounding.

The following fixtures and appliances 186. Futures shall be furnished and erected: acett)de8*

water-proof hoods complete with

reflectors, sockets, and

(bracket [attachments, j cross-suspension j

goose-neck brackets, in length

complete with post-socket or flange
and the necessary guy wires.

sleet-proof pulleys.

feet inch weather-proof rope

for raising and lowering lamps.

double cleats for winding up surplus rope.

— feet inch rope for suspending

lamps, , c ]). volt

lamps.

— water-proof circuit cut-outs for cutting out circuits inside buildings from the exterior circuit. The " Off" and "On" positions shall be plainlymarked and the switch shall be so constructed that when at the position marked "Off" the wires on the inside shall be entirely cut out of the main circuit.

— outriggers, in length for attaching to the exterior of buildings.

— outriggers, in length for attaching to poles.

— j ornamental } P°le toPs

— mast arms, in length, with

proper arrangement for raising and lowering lamps. Bidders shall submit design of mast-arm recommended.

— sleet-proof pulleys.

feet inch weather-proof rope

for raising and lowering lamps.

, fret _ inPh J weather-proof rope f

teet mcn j stranded cable \

for suspending lamps.

( double cleats | » A- ] windlasses ffor wmdmS up

surplus rope.

(Note.—The specification for wiring 18S-wlrln«must be made up with reference to the system or systems to be installed, whether parallel or series wiring with incandescent or arc lamps, or a combination of systems.)

(Note.—The point at which streetlight- 189c^a0[ ing circuits will be controlled will depend much on the system adopted and on local conditions; it is sometimes absolutely necessary that they shall be controlled from the station; in other cases for the sake of economy or convenience it is desirable to have them controlled from some other point such as the centre of distribution.)

All street lighting circuits shall be controlled by switches at (location.)

19and ffr While the schedule is intended to repre

tlons.

sent very closely the number of lights to be installed, yet as some changes may become necessary during the process of construction each bidder shall name in his proposal a price to be added to or deducted from the contract price for each light installed in excess of the number specified or which shall be cancelled, provided such addition or cancellation involves no change in the work already completed and shall be along the line of existing circuits. The price shall include lamp, fixtures, extra poles required and labor.

191.1n8truc /gee p. 102> seC. 102.) tion. x

192. Schedules. In order to tabulate clearly and concisely the location and number of outlets for lights, switches, and meters, together with the number of lights per outlet in each individual case and the capacity of

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