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SECTION PAGE I INTBODUCTIONHOW TO USE THIS BOOK
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alternating current amount amperes angle armature base calculated cell circle circuit circular mils coefficient coil Common Logarithms concrete conductor copper cosec Cosine Cotang decimal diameter direct current distance divided electrical electromotive force electron equal factor Fiberglas figure Fixture floor foot force formula gallons gear grid voltage heat hole Illustration installed insulation interest lath length load logarithms machine magnetic measured metal Ml Ml mortar motor multiplied National Electrical Code Ohm's Law ohms operation percent pipe pitch plate current pounds quantities radiation radius resistance roof screw sheets shown in Fig side Sine slant height slide rule space specific gravity square feet square inches square root steel Stud surface Table Tang Tangents taper temperature thick thread tion triangle tube unit voltage volts wall watts weight width wire yards