Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & co · leaf 53
cu-racy and haphazard guess work. The heating effectof various kinds of motor loads cannot be accuratelydetermined without the use of graphic current charts SO ELECTRICAL TABLES AND DATA and these are seldom available at the time the installa-tion is made. The contractor and the inspector arethus,… … Fig-ure 4b must be based upon the h. p. intended to be installed.It is principally for this reason that the followingtable has been arranged in the form given. The table gives factors which express the ratio ofthe h. p. equivalent of intermittent or fluctuatingcurrents to the heating equivalent of…
Electrical engineering
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