electrical wiring residential textbook EPACK: ELECTRICAL WIRING RESIDENTIAL, 17TH + TRADES COURSEMATE WITH EBOOK INSTANT ACCESS CODE:, C. Mullin: 9780176503819: Amazon.com: Books 9 Creative Electrical Wiring Residential Textbook Photos

9 Creative Electrical Wiring Residential Textbook Photos

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EPACK: ELECTRICAL WIRING RESIDENTIAL, 17TH + TRADES COURSEMATE WITH EBOOK INSTANT ACCESS CODE:, C. Mullin: 9780176503819: Amazon.Com: Books - 12/2 and 14/2 nonmetallic-sheathed awg cables input a box. Every cable has an gadget grounding conductor. The 12 awg conductors are related to a receptacle. Two of the 14 awg conductors are linked to a toggle switch. The alternative 14 awg conductors are spliced together considering the fact that they serve as a transfer loop. The field contains two cable clamps. Calculate the minimum cubic-inch volume required for the container. 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 ------------------------------9.00 cu. In. 2—#14/2 ---- 2 x 2 x 2.00 ------------------------------eight.00 cu. In. Devices: 1—toggle switch –1 x 2 x 2.25 ------------------------4.50 cu. In. 1—receptacle –1 x 2 x 2.25 ----------------------------4.50 cu. In. Fittings (clamps) 2—cable clamps—1 x 2.25 ----------------------------2.25 cu. In. ------------------------------------------------------------- 31.50 cu. In. Using the identical quantity and length of conductors as in questions 28, however the use of electric metal tubing, calculate the minimum cubic-inch volume required for the box. There may be no separate gadget grounding conductors, nor will there be any clamps within the box. Solution: floor cord—need to discern on one floor wire because of the nearby code requirement of all conduit systems requiring a floor twine. The answers will be the equal due to the fact the electric metal tubing would require the usage of metal connectors that should input the box, you will count number them as fittings, because of this that no matter what number of fittings are coming into the container the you will figure it at ( 1-times the cubic inch of the largest conductor that enters the box. To allow for ok conductor duration at electric outlet and device boxed to make up connections, 300.14 calls for that no longer less than [ 3 in.(75 mm). 6 in. (150 mm), 9 in. (225 mm)] of conductor duration be supplied. This length is measured from in which the conductor emerges from the cable or raceway to the quit of the conductor. For field openings having any measurement much less than 8in. (200mm), the minimum period of conductor measured shape the container starting in the wall to the quit of the conductor is [ 3 in. (Seventy five mm), 6 in. (One hundred fifty mm), nine in. (225 mm). Circle the best answer. Solution web page 21 figure 2-2 when wiring a residence, what should be taken into consideration when putting in wall packing containers on each sides of a not unusual partition that separates the garage and a habitable room? The hearth score of the walls need to be maintained which means that boxes might not be installed “lower back to back” or inside the identical air void. A separation of 24 inches horizontal ought to be maintained unless the bins are listed as being fire resistant. The containers which can be at the hearth rated wall should be nicely included or encased with a fire puddy. Does the nec® permit metallic raceways for use with nonmetallic packing containers? Sure _____x______ no__________ nec®______nec® 314.3 (exception) –previded that every one metal raceways or cables coming into the box are bonded collectively to maintanin the integrity of the grounding route to different system in the set up. P. 33.