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# 10 Practical Electrical Wiring Residential 18Th Edition Review Answers Images

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10 Practical Electrical Wiring Residential 18Th Edition Review Answers Images - 12/2 and 14/2 nonmetallic-sheathed awg cables input a field. Each cable has an system grounding conductor. The 12 awg conductors are linked to a receptacle. Of the 14 awg conductors are connected to a toggle transfer. The opposite two 14 awg conductors are spliced collectively due to the fact that they function a switch loop. The box contains cable clamps. Calculate the minimal cubic-inch extent required for the box. Solution: floor twine----#12 (2.25cu. In.)??1 x 2.25 ----------2.25 cu. In. Conductors: 2—#12/2 ---- 2 x 2 x 2.25 ------------------------------nine.00 cu. In. 2—#14/2 ---- 2 x 2 x 2.00 ------------------------------8.00 cu. In. Gadgets: 1—toggle transfer –1 x 2 x 2.25 ------------------------four.50 cu. In. 1—receptacle –1 x 2 x 2.25 ----------------------------four.50 cu. In. Fittings (clamps) 2—cable clamps—1 x 2.25 ----------------------------2.25 cu. In. ------------------------------------------------------------- 31.50 cu. In. Using the same variety and size of conductors as in questions 28, but using electrical metallic tubing, calculate the minimum cubic-inch extent required for the container. There will be no separate equipment grounding conductors, nor will there be any clamps within the box. Solution: floor twine—should determine on one ground cord because of the local code requirement of all conduit systems requiring a floor twine. The answers will be the identical due to the fact the electric metallic tubing would require the use of metallic connectors that have to enter the container, you'll count number them as fittings, this means that that no matter what number of fittings are entering the field the you'll parent it at ( 1-times the cubic inch of the biggest conductor that enters the container. To permit for good enough conductor duration at electrical outlet and tool boxed to make up connections, three hundred.14 calls for that now not much less than [ 3 in.(75 mm). 6 in. (150 mm), 9 in. (225 mm)] of conductor duration be supplied. This duration is measured from where the conductor emerges from the cable or raceway to the quit of the conductor. For box openings having any size much less than 8in. (200mm), the minimal duration of conductor measured shape the container starting in the wall to the cease of the conductor is [ 3 in. (75 mm), 6 in. (One hundred fifty mm), 9 in. (225 mm). Circle the appropriate answer. Solution web page 21 parent 2-2 when wiring a residence, what need to be considered whilst installing wall boxes on each facets of a common partition that separates the garage and a liveable room? The hearth score of the partitions must be maintained because of this that bins might not be established “again to back” or in the same air void. A separation of 24 inches horizontal should be maintained except the boxes are listed as being fire resistant. The boxes which are on the fire rated wall have to be nicely protected or encased with a hearth puddy. Does the nec® permit metal raceways for use with nonmetallic boxes? Yes _____x______ no__________ nec®______nec® 314.3 (exception) –previded that every one metallic raceways or cables getting into the container are bonded collectively to maintanin the integrity of the grounding path to different device within the installation. P. 33.