Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . assing through floors, studding, etc., shall be pro-tected with porcelain tubes, and where wires pass vertically through bottomplates, bridging, etc., of partitions, an extra tube shall be used to protectwires from plaster droppings. Wires must be supported at least every 4feet and where near gas or water pipes extra supports shall be used. Allporcelain material shall be non-absorptive and broken or damaged piecesmust be replaced. Tubes shall be of suflBcient length to bush entire
Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . assing through floors, studding, etc., shall be pro-tected with porcelain tubes, and where wires pass vertically through bottomplates, bridging, etc., of partitions, an extra tube shall be used to protectwires from plaster droppings. Wires must be supported at least every 4feet and where near gas or water pipes extra supports shall be used. Allporcelain material shall be non-absorptive and broken or damaged piecesmust be replaced. Tubes shall be of suflBcient length to bush entire lengthof hole. At outlets the wires shall be protected by flexible tubing, the sameto be continuous from nearest wire support to inside of outlet box. Wiresinstalled in masonry work shall be protected by approved rigid iron conduitwhich shall be continuous from outlet to outlet. The method and reasons for supporting the wires describedabove are as have already been mentioned under item 1. Thereason for extra supports near gas pipes and waterpipes is as a precaution against the possibility 4. Conductors.—Conductors shall be continuous fromoutlet to outlet and no splices shall be made except inoutlet boxes. No wire smaller than No. 14 B. & S. gageshall be used and for all circuits of 100 feet or longer,-p, 2A5 ot- ^^* ^^^ ?^* ^ ^ ^^^^ ^^ larger shall be used. All con-let box. ductors of No. 8 B. & S. gage or larger shall be shall be of sufficient length at outlets to make con-nection to apparatus without straining connections. Splices shall be madeboth mechanically and electrically perfect, and the proper thickness ofrubber and friction tape shall be then applied. Continuous conductors are required because of the possibilityof defects in the joints of spliced wire. 5. Position of Outlets.—Unless otherwise indicated or directed, plugreceptacles shall be located just above baseboard; wall brackets, 5 feet abovefinished floor in bedrooms, and
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