 | Horatio Alvah Foster - 1901 - Страниц: 1018
...ground wire. Direct Current 3- Wire Systems. a. Neutral wire may be groumled, and when grounded tlie following rules must be complied with : — 1. Must...also through all available underground water- and gas-pipe systems. '2. In underground systems the neutral wire must also be grounded at each distributing-box... | |
 | Francis Bacon Crocker - 1901 - Страниц: 528
...Systems. b. The neutral point of transformers, or the neutral wire of distributing systems, may be grounded, and when grounded the following rules must be complied with : — 1. Transformers feeding 2-wire systems must be grounded at the center of the secondary coils. 2 Transformers... | |
 | Harry Cooke Cushing - 1902 - Страниц: 204
...wire may be grounded, and when grounded the following rules should be complied with : 1. They should be grounded at the central station on a metal plate...and also through all available underground water and gas-pipe systems. 2. In underground systems the neutral wire should also be grounded at each distributing... | |
 | American School (Lansing, Ill.) - 1903 - Страниц: 320
...wires may be grounded, and when grounded the following rules should bo complied with: 1. They should be grounded at the central station on a metal plate...buried in coke beneath permanent moisture level, and Fig. 6. Porcelain tube, used where wires enter buildings, showing drip loop in wire. also through all... | |
 | 1905 - Страниц: 484
...wires may be grounded, and when grounded the following rules should be complied with : 1. They should be grounded at the central station on a metal plate...buried in coke beneath permanent moisture level, and Fig. 6. Porcelain tube, used where wires enter buildings, showing drip loop in wire. also through all... | |
 | 1906 - Страниц: 590
...wires may be grounded, and when grounded the following rules should be complied with : 1. They should be grounded at the central station on a metal plate...buried in coke beneath permanent moisture level, and Fig. 6. Porcelain tube, used where wires enter buildings, showing drip loop in wire. 26 also through... | |
 | American School (Lansing, Ill.) - 1907 - Страниц: 438
...wires may be grounded, and when grounded the following rules should be complied with : 1. They should be grounded at the central station on a metal plate...buried in coke beneath permanent moisture level, and Fig. 6. Porcelain tube, used where wires cuter buildings, showing drip loop in wire. also through all... | |
 | Charles Edwin Knox - 1907 - Страниц: 336
...ALTERNATING-CURRENT SECONDARY SYSTEMS b. Transformer secondaries of distributing systems should preferably be grounded, and when grounded, the following rules must be complied with: 1. The grounding must be made at the neutral point or wire, whenever a neutral point or wire is accesible.... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1908 - Страниц: 352
...Alternating-Current Secondary Systems. b. Transformer secondaries of distributing systems should preferably be grounded, and when grounded, the following rules must be complied with : — 1. The grounding must be made at the neutral point, or wire, whenever a neutral point or wire is accessible.... | |
 | Fidelity and Casualty Company of New York - 1909 - Страниц: 224
...Alternating- Current Secondary Systems 6. Transformer secondaries of distributing systems should preferably be grounded, and when grounded, the following rules must be complied with:— 1. The grounding must be made at the neutral point or wire, whenever a neutral point or wire is accessible.... | |
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Porcelain tube, used where wires enter buildings, showing drip loop in wire. also through all available underground water and gas pipe systems. 2. In underground systems the neutral wire should also be grounded at each distributing box through the box.... 
