Electrical news and engineering . ind that the position ofthe machinery is an important factor to consider in the plac-ing of the outlets to insure tlic proper direction of light onthe work. In order to nduce the number of outlets to a minimumand to utilize the more efficient higher wattage lam|)s. thelighting fixtures sboidd be mounted as liigh as practice is to mount the eciuipment either ou theunder side nf llic truss or to suspend the units on a lc\elwith the bottom of the trusses. In long narrow buildings where the width is b. orless than the height of the ceiling
Electrical news and engineering . ind that the position ofthe machinery is an important factor to consider in the plac-ing of the outlets to insure tlic proper direction of light onthe work. In order to nduce the number of outlets to a minimumand to utilize the more efficient higher wattage lam|)s. thelighting fixtures sboidd be mounted as liigh as practice is to mount the eciuipment either ou theunder side nf llic truss or to suspend the units on a lc\elwith the bottom of the trusses. In long narrow buildings where the width is b. orless than the height of the ceiling, one row of outlets downthe centre ordinarily will prove satisfactory. If, however,machinery is located near the walls, two rows of units shouldbe provided. In buildings where the width exceeds theheight, the longitudinal rows should be so located that thedistance between them does not exceed one and one-halltimes the distance of the light source to the floor. This sameproportion applies to the outlets in each row, locating them. Switchboard in blast furnace gas engine power houseAlgoma Steel Corporation if possible symmetrically with reference to the bays intowhich the trusses of the building naturally divide it. In buildings with extremely high ceilings, exceedingthe width, the mounting of light sources on the trusses would result in a considerable portion of the lightrays striking the upper section of the walls. With ordinaryconditions of dark and dirty walls, the light reflection is solow that the resultant illumination is inefficient. In suchcases .ingle reflectors, as shown in Fig. 2, mounted not lessthan twenty-five feet high along each -^idp w:ill will pro-
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen31donm
