 | Horatio Alvah Foster - 1901 - 1018 стор.
...betwean points under all circumstances. 57. Arc X.anipH. (For installation rules, see No. 19.) a. Must be provided with reliable stops to prevent carbons from falling "out in case the clamps become loose. b. Must be carefully insulated from the circuit m all their exposed c. Must, for constant-current systems,... | |
 | Harry Cooke Cushing - 1902 - 204 стор.
...lamps should be hung from insulating supports other than their conductors. All arc lamps should be provided with reliable stops to prevent carbons from falling out in case the clamps become loose, and all exposed parts should be carefully insulated from the circuit. Each lamp for constant current... | |
 | 1902 - 738 стор.
...when started, and preventing an arc between points under all circumstances. Arc r,amps — a. Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. b. Must be carefully insulated from the circuit in all their exposed parts. c. Must, for constant-current... | |
 | American School (Lansing, Ill.) - 1903 - 320 стор.
...lamps should be hung from insulating supports other than their conductors. All arc lamps should be provided with reliable stops to prevent carbons from falling out in case the clamps become loose, and all exposed parts should be carefully insulated from the circuit. Each lamp for constant-current... | |
 | Arthur Vaughan Abbott - 1904 - 764 стор.
...switches shall be double-pole automatic in action and strictly nonarcing 146. 49. Arc Lamps. «. Must be provided with reliable stops to prevent carbons from falling out, in case clamps become loose. b. Must be carefully insulated from the circuit in all exposed parts. c. Must,... | |
 | 1905 - 484 стор.
...lamps should be hung from insulating supports other than their conductors. All arc lamps should be provided with reliable stops to prevent carbons from falling out in case the clamps become loose, and all exposed parts should be carefully insulated from the circuit. Each lamp for constant-current... | |
 | American School (Chicago, Ill.) - 1906 - 528 стор.
...lamps should be Ining from insulating supports other than their conductors. All arc lamps should be provided with reliable stops to prevent carbons from falling out in case the clamps become loose, and all exposed parts should be «arefully insulated from the circuit. Each lamp for constant-current... | |
 | 1906 - 590 стор.
...be hung from insulating supports other than their conductors. All arc lamps should be provided witli reliable stops to prevent carbons from falling out in case the clamps become loose. and all exposed parts should be carefully insulated from the circuit. Each lamp for constant-current... | |
 | American School (Lansing, Ill.) - 1907 - 438 стор.
...lamps should be hung from insulating supports other than their conductors. All arc lamps should be provided with reliable stops to prevent carbons from falling out in case the clamps become loose, and all exposed parts should be carefully insulated from the circuit. Each lamp for constant-current... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1908 - 352 стор.
...circumstances. 57. Arc Lamps. (See Figure 167.) (For installation rules, sec Nos. 19 and 29.) a. Must be provided with reliable stops to prevent carbons from falling out in case the lamps become loose. b. All exposed parts must be carefully insulated from the circuit. c. Must, for... | |
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Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose. 
