Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)

Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 201

An illustration from Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters, 1905, leaf 201 — polarity must be countersunk. n. Mounting.—Nuts or screw-heads on the under side ofthe base must be countersunk at least one-eighth of an inch 198 MODERN ELECTRICAL CONSTRUCTION. and covered with a waterproof compound which will not meltbelow 150 degrees Fahrenheit. o. Terminals.—Terminals of such…

Electrical engineering

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Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)

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