Electric Lighting SpecificationsW. J. Johnstone Company, Limited, 1892 - 176 стор. |
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Результати 6-10 із 10
Сторінка 67
... insulation from the ground maintained on both sides throughout the system , and one pair of efficient lightning arresters for the common circuits , or for each circuit if they are kept separate ; there shall also be provided such brush ...
... insulation from the ground maintained on both sides throughout the system , and one pair of efficient lightning arresters for the common circuits , or for each circuit if they are kept separate ; there shall also be provided such brush ...
Сторінка 73
... LIGHTING SPECIFICATIONS . to alter the belt tension ; one main switch ; one pair of efficient lightning arresters ; and for the general installation one testing mag- -neto capable of ringing through ( See p . 56 , sec . 36. ) ohms ...
... LIGHTING SPECIFICATIONS . to alter the belt tension ; one main switch ; one pair of efficient lightning arresters ; and for the general installation one testing mag- -neto capable of ringing through ( See p . 56 , sec . 36. ) ohms ...
Сторінка 97
... through trees in such a way as to injure the insulation ; and shall not be allowed to sag 56 量 125 177. Joints 178. Lightning Arresters . 179. Maximum Fall ELECTRIC LIGHTING SPECIFICATIONS . 97 Pins and Insulators Steps Soil Wiring.
... through trees in such a way as to injure the insulation ; and shall not be allowed to sag 56 量 125 177. Joints 178. Lightning Arresters . 179. Maximum Fall ELECTRIC LIGHTING SPECIFICATIONS . 97 Pins and Insulators Steps Soil Wiring.
Сторінка 120
... LIGHTNING ARRESTERS - Must be : 1. Attached to each side of every overhead circuit connected with the station . 2. In plain sight . 3. On the switchboard , or in an equally accessible place , away from combustible material . 4 ...
... LIGHTNING ARRESTERS - Must be : 1. Attached to each side of every overhead circuit connected with the station . 2. In plain sight . 3. On the switchboard , or in an equally accessible place , away from combustible material . 4 ...
Сторінка 139
... lighting arresters may be attached to gas pipes within the build- ing . 3. All conductors connecting with tele- phone , district messenger , burglar alarm , watch clock , electric time , and other similar instruments must , if in any ...
... lighting arresters may be attached to gas pipes within the build- ing . 3. All conductors connecting with tele- phone , district messenger , burglar alarm , watch clock , electric time , and other similar instruments must , if in any ...
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Age money Alternating Current ampère meter apparatus appliances arc lamps armature attached automatic baseframe bidder shall fill bids building c. p. lamps cables candle power capacity carried ceiling cent centre of distribution cleats conductors conduit connections contractor shall furnish cross-arms cuits cut-out boxes cut-outs and switches Direct Current double-pole dynamo or circuit dynamos Trade number erect the following fastened fill out completely fixture foundation(s full load fuses hand regulator incandescent lamps inches incombustible bases installation insulated wire insulation resistance junction boxes knife switch least lightning arresters main wires ments moisture moisture-proof molding necessary non-combustible number of lights number or designation ohms operation outlets pipes placed plant porcelain potential pressure proper protected pulleys purchaser Rating of exciters riser feeder schedule securely set screws shunt Sockets soldered spark arresters specification steam struction switchboard taps three-wire tightened tion tube two-wire voltage voltmeter volts walls waterproof wire smaller