[Electric engineering.] . t,the boiler room and engineroom should be separatedfrom each other by a fire-wall with fireproof com-municating doors. Thecomplete separation of thesedepartments will preventaccumulation of dust on thedynamos and engines dueto the handling of coal andashes. In some cases, whereground space is limited, theengines are placed on onefloor and the dynamos onthe floor above, the powerbeing transmitted by meansof belts. One method usesindividual driving fromeach engine to one or twodynamos located directly above, but a better one is tomake use of countershafts on the engine
![[Electric engineering.] . t,the boiler room and engineroom should be separatedfrom each other by a fire-wall with fireproof com-municating doors. Thecomplete separation of thesedepartments will preventaccumulation of dust on thedynamos and engines dueto the handling of coal andashes. In some cases, whereground space is limited, theengines are placed on onefloor and the dynamos onthe floor above, the powerbeing transmitted by meansof belts. One method usesindividual driving fromeach engine to one or twodynamos located directly above, but a better one is tomake use of countershafts on the engine Stock Photo](https://c8.alamy.com/comp/2AX9RJ4/electric-engineering-tthe-boiler-room-and-engineroom-should-be-separatedfrom-each-other-by-a-fire-wall-with-fireproof-com-municating-doors-thecomplete-separation-of-thesedepartments-will-preventaccumulation-of-dust-on-thedynamos-and-engines-dueto-the-handling-of-coal-andashes-in-some-cases-whereground-space-is-limited-theengines-are-placed-on-onefloor-and-the-dynamos-onthe-floor-above-the-powerbeing-transmitted-by-meansof-belts-one-method-usesindividual-driving-fromeach-engine-to-one-or-twodynamos-located-directly-above-but-a-better-one-is-tomake-use-of-countershafts-on-the-engine-2AX9RJ4.jpg)
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[Electric engineering.] . t, the boiler room and engineroom should be separatedfrom each other by a fire-wall with fireproof com-municating doors. Thecomplete separation of thesedepartments will preventaccumulation of dust on thedynamos and engines dueto the handling of coal andashes. In some cases, whereground space is limited, theengines are placed on onefloor and the dynamos onthe floor above, the powerbeing transmitted by meansof belts. One method usesindividual driving fromeach engine to one or twodynamos located directly above, but a better one is tomake use of countershafts on the engine or dynamo floor, orboth. These countershafts are divided into sections andfitted with friction pulleys in such a way as to permit of anydesired combination of engines and dynamos, an arrange-ment best calculated to ensure uninterrupted service. Asimple example of such an installation is shown in Fig. 3, the lower view being an elevation. The engines are on thelower floor and the countershaft c on the upper floor, directly. Fig. 3. 14 ELECTRIC TRANSMISSION. above the flywheels and connected by belting to the dyna-mos d. Two engines are indicated, their flywheels w, wbeing dotted in the plan.