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SBCTION T. The Switchboard. In the introduction to this thesis, mention is made of the fact that this wort is written as an exposition of the present day trend toward the use of standardequipment in small power plants. This trend is noêre so apparent as in switchboard design. Standard generator and feeder panels to meet all normal conditions have been designed and cata- logued by the large electrical manufacturers. Wiring diagrams, are all drawn, templets for drilling the slate made, and specifications for materials used in the construction of these "standard panels" are all ready to be sent to the storekeeper on a moment's notice. Thus the prices of standard panels are very low, and the sales engineer finds it his duty to apply these panels to the purchaser's conditions. This is of benefit to both the buyer and seller. It makes it possible to quickly determine vdiich of several prospective layouts will be the cheapest; for reference to the catalogue will quickly determine the comparitive 19. prices. All that the customer demands is a board îch will satisfactorily do his work, at the lowest possible cost. Thus the conditions which surround the installation must first be thorou^ly studied. Then reference to the catalogue determines to a large extent the layout of the panels. In the plant under consideration, the question as to Aether or not a circuit-breaker should be used in place of fuses to protect the generator is settled by the Board of Fire underwritters, who specify a doable pole breaker in the main line. Likewise a ground-detector dftriee
Page 2 and 3: Illinois Institute of Technology UN
Page 7 and 8: THE INSTALLATION OF AN ELECTRIC LIC
Page 9 and 10: TABLE OP COITENTS, —oooOooo— Se
Page 11 and 12: oooOnoo ?ig. 1 Plat of the Village
Page 13 and 14: THE mSHALLATIOS OP AN ELECTRIC LIGH
Page 15 and 16: SECTION I, HISTORY. The Village of
Page 17 and 18: SECTIOir II, Size of the Generator,
Page 19 and 20: This estimate is very liberal. The
Page 21 and 22: station capacity. This figure may a
Page 23 and 24: the residence district. Gasoline st
Page 25 and 26: Ihs total estimated load le therefo
Page 27 and 28: sfeLOWs that •ttiis estimate chec
Page 29 and 30: Compensator ; This generator shall
Page 31 and 32: Alternating Current System ; SECTIO
Page 33 and 34: tunnels in the hills on each side o
Page 35 and 36: In the 18 typical plants Investigat
Page 37 and 38: TABLE NO. 3 COPPER CALCULATIONS Len
Page 39 and 40: 125/250 VOLT SYSTEM. peet Of Size o
Page 41 and 42: In addition to Its advaatages from
Page 43 and 44: SECTIOS IV* The Storage Battery. 15
Page 45 and 46: 16. longer psrlod of time each day
Page 47 and 48: to accomodate four additional plate
Page 49: apparatus is special and therefore
Page 53 and 54: 20. Is required. For intelligent op
Page 55 and 56: panel contains all the apparatus sr
Page 57 and 58: I!FEM #2 ; Egxtlpnent 1 - DJ. Type
Page 59 and 60: ITEM #4; 2 - D»PJ).T. 250 V. 60 am
Page 61 and 62: Poles ; SECTION VI. The Line Constm
Page 63 and 64: are 3 feet long, four-pin arms 4 fe
Page 65 and 66: The lamp can be lowered by means of
Page 67 and 68: 400 - 3/8" X 4" galT. carriage bolt
Page 69 and 70: eluding the cost of erection, SECTI
Page 72 and 73: .II? .JGITO;;;;:. -xo iaelq b:
Page 77: O JiOO Too -^
Page 85 and 86: ELECTRIC SERVICE SUPPLIES COMPANY I
Page 87: ELECTRIC SERVICE U P P L I E S COMP

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