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All Textbook Solutions for EBK ELECTRICAL WIRING RESIDENTIAL

1R 2R Does the NEC provide minimum or maximum standards? __________What do the letters UL signify?What section of the NEC states that all listed or labeled equipment shall be installed or used in accordance with any instructions included in the listing or labeling?6R 7R Does compliance with the NEC always result in an electrical installation that is adequate, safe, and efficient? Why? _____________________________________________Name two nationally recognized testing laboratories. __________10R 12R A junction box on a piece of European equipment is marked 200 cm3. Convert this to cubic inches. _________________________________14R You will learn in Chapter 3 that residential lighting loads are based on 3 volt-amperes per ft2 (33 volt-amperes per m2). Determine the minimum lighting load required for an area of 186 m2. Do calculations for both feet squared and meters squared so you can see the difference in answers. To convert meters squared to feet squared, refer to Table 1-8.16R What can you do to reduce or eliminate the possibility of receiving an electric shock when working on electrical circuits? Circle the correct answer. Turn off the power on the circuit you are working on. Turn off the power on the circuit you are working on, tag it, and lock the disconnect in the OFF position. Turn off the power on the circuit you are working on, then tell everyone else working with you not to turn the power back on.What is the NEC definition of a qualified person?Are low-voltage systems totally safe? Explain.21R What do the letters PPE stand for? ______________________________________________________________________23R Where might you obtain information about on-the-job safety and safety training? __________ _____________________________________ _____________________________________ _____________________________________25R What is the purpose of specifications?Refer to the specifications in the back of this text following Chapter 33. a. What electrical codes must be conformed to? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. What is the wiring method to be used in the workshop? ________________________________________________________________________ c. What size conductors are to be used for the lighting branch circuits? ______________________ AWG the small-appliance branch circuits? ______________________ AWG d. What section of the specifications tells us the size of the service entrance to be installed for this residence?What is done to prevent a plan from becoming confusing because of too much detail? ____________________________________ ____________________________________ ____________________________________Name three requirements contained in the specifications regarding material. a. ______________________________________________________________ b. ______________________________________________________________ c. ______________________________________________________________5R What phrase is used when a substitution is permitted for a specific item? __________ __________________________________________What is the purpose of an electrical symbol? __________8R 9R What three parties must be satisfied with the completed electrical installation? a. __________ b. __________ c. __________What does a plan show about electrical outlets? __________ ______________________________________ ______________________________________ ______________________________________13R 14R 15R 16R 17R 18R 19R What methods may be used to mount luminaries to an outlet box fastened to an offset bar hanger? _________________________________ _________________________________ _________________________________What advantage does a 4 in. octagon box have over a 3 in. octagon box?What is the size of the opening of a switch (device) box for a single device? _________________________________23R 24R 25R 26R 27R 28R 29R 30R 31R 32R 33R 35R 37R 38R 39R 40R 42R Does the NEC allow metal raceways to be used with nonmetallic boxes? Yes __________ No __________, NEC __________1R What is the size of the footing for the steel Lally columns in the basement? Refer to Plan 1 of 10. (Lally is the trademark used for a concrete-filled steel cylinder used as a supporting member for wood or steel girders and beams. The Lally column was named after John Lally, born in Ireland in 1859. The term lolly is also used.) __________ __________________________________________3R 4R 5R 6R How far is the front garage wall from the curb? __________How far is the side garage wall from the property lot line? __________9R What is the purpose of the I-beams that rest on top of the steel Lally columns? __________ __________________________________________Where is access to the attic provided? __________________________________________13R 14R 15R 16R What is the stud size for the partitions between the bathrooms in the bedroom area where substantial plumbing is to be installed? __________________________________________ __________________________________________Who is to furnish the range hood? __________________________________________ __________________________________________Who is to install the range hood? __________________________________________ __________________________________________1R How are branch circuits rated? See NEC 210.3._____3R 4R What spaces are not included in the floor area when calculating the load in volt-amperes per square foot? See NEC 220.12. __________What is the unit load per square foot for dwelling units? See Table 220.12. __________According to NEC 210.50(C), a laundry equipment outlet must be placed within __________ ft (m) of the intended location of the laundry equipment.How is the total load in volt-amperes for lighting purposes determined? See NEC 220.12 __________How is the total lighting load in amperes determined? __________How is the required number of branch circuits determined? __________What is the minimum number of 15-ampere lighting branch circuits required if the dwelling has an occupied area of 4000 ft2 (368 m2)? Show all calculations.How many lighting branch circuits are provided in this dwelling? __________ a. What is the minimum load allowance for small-appliance circuits for dwellings? See NEC 220.52(A). __________ b. An individual 15-ampere branch circuit is run to the receptacle outlet behind the refrigerator instead of connecting it to one of the two 20-ampere small-appliance branch circuits that are required in kitchens. For this separate circuit, an additional 1500 volt-amperes (shall) (does not have to) be added to the load calculations for dwellings. (Circle the correct answer.)13R How is the load determined for outlets supplying specific appliances? See NEC 220.14. __________________________________________What type of circuits must be provided for receptacle outlets in the kitchen, pantry, dining room, and breakfast room? See NEC 210.11(C)(1). __________16R In a single-family dwelling, how is overcurrent protection for branch circuits required to be provided? See NEC 210.20. __________18R The minimum number of outdoor receptacles for a residence is __________, NEC __________. State the location. __________The Code indicates the rooms in a dwelling that are required to have switched lighting outlets or switched receptacles. Write yes (switch required) or no (switch not required) for the following areas [see NEC 210.70(A)]: a. attic__________ b. stairway__________ c. crawl space (where used for storage)__________ d. hallway__________ e. bathroom__________ f. clothes closet__________21R 22R 23R 24R 25R Although the Code contains many exceptions to the basic overcurrent protection requirements for conductors, in general, the rating of the branch-circuit overcurrent device must (not be less than) (not be more than) the ampacity of a conductor. (Circle the correct answer.)The rating of a branch circuit is based on (Circle the correct answer.) a. the rating of the overcurrent device. b. the length of the circuit. c. the branch-circuit wire size.a. A 25-ampere branch-circuit conductor is derated to 70%. It is important to provide proper overcurrent protection for these conductors. The derated conductor ampacity is ___________________________________________________________________________________________________________________________________ b. If the connected load is a fixed nonmotor, noncontinuous load, the branch-circuit overcurrent device may be sized at (20) (25) amperes. (Circle the correct answer.) c. If the above circuits supply receptacle outlets, the branch-circuit overcurrent device must be sized at not over (15) (20) (25) amperes. (Circle the correct answer.)29R 30R 31R 32R A split-level home has one stairway that has six risers between two levels of the home. Which of the following choices Meets Code? (Circle the correct answer.) a. Two three-way switches must be installed (one switch at the top of the stairs, one switch at the bottom of the stairs) to control the lighting for the stairway. b. One single-pole switch is permitted on either level to control the lighting for the stairway. c. No switches are necessary for the stairway lighting because the lighting on the upper level and the lower level provides enough illumination on the stairway.34R 35R 36R In the past, it was common practice to connect the lighting and receptacle(s) in a bathroom to the same circuit. Because of overloads caused by high-wattage grooming appliances, the Code now requires that these receptacle(s) be supplied by a separate 20-ampere branch circuit. Where in the Code is this requirement found? NEC __________If a residence has two bathrooms, the Code states: a. The receptacles in each bathroom must be connected to a separate 20-ampere branch circuit. For two bathrooms, this would mean two circuits. (True) (False) (Circle the correct answer.) b. The receptacles in both bathrooms are permitted to be served by the same 20-ampere branch circuit. (True) (False) (Circle the correct answer.)39R 40R 41R 42R 43R The largest size solid conductor generally permitted to be installed in a raceway is (10 AWG) (8 AWG) (6 AWG). (Circle the correct answer.)What is the minimum branch-circuit wire size that may be installed in a dwelling?What exceptions, if any, are there to the answer for problem 2? ____What determines the ampacity of a wire?What unit of measurement is used for the diameter of wires?What unit of measurement is used for the cross-sectional area of wires? __________What is the voltage rating of the conductors in Type NMC cable? _______________Indicate the allowable ampacity of the following Type THHN (copper) conductors. Refer to Table 310.15(B)(16). a. 14 AWG __________ amperes b. 12 AWG __________ amperes c. 10 AWG __________ amperes d. 8 AWG __________ amperes e. 6 AWG __________ amperes f. 4 AWG __________ amperes 9R What are the colors of the conductors in nonmetallic-sheathed cable for a. 2-wire cable? _______________, _______________ b. 3-wire cable? _______________, _______________, _______________For nonmetallic-sheathed cable, may the uninsulated conductor be used for purposes other than grounding? ____________________________________________________12R Under what condition may nonmetallic-sheathed cable (Type NM) be fished in the hollow voids of masonry block walls? ________________________________________a. What is the maximum distance permitted between straps on a cable installation? _____________________ b. What is the maximum distance permitted between a box and the first strap in a cable installation? _____________________ c. Does the NEC permit 2-wire Romex stapled on edge? _____________________ d. When Type NM cable is run through holes in studs and joists, must additional support be provided? _____________________15R 16R 17R 18R 19R Circle the correct answer to the following statements: a. Type SE service-entrance cable is for aboveground use. True False b. Type USE service-entrance cable is suitable for direct burial in the ground. True False c. Type SE cable with an uninsulated neutral conductor is permitted for hooking up an electric range in a new branch circuit. True False d. Type SE cable with an insulated neutral conductor is permitted for hooking up an electric range in a new branch circuit. True False e. Are Types SE and USE service-entrance cables used in your area? Yes No When running Type NM cable through a bored hole in a stud, the nearest edge of the bored hole shall not be less than ________ in. from the face of the stud unless the cable is protected by a 116 in. (1.6 mm) metal steel plate(s).Where is the main service-entrance panel located in this residence?Is it permitted to use flexible metal conduit over 6 ft (1.8 m) in length as a grounding means? (Yes) (No) (Circle the correct answer.)Liquidtight flexible metal conduit may serve as a grounding means in sizes up to and including _______ in. where used with listed fittings.It is permissible for an electrician to connect aluminum, copper, or copper-clad aluminium conductors together in the same connector. (True) (False) (Circle the correct answer.)Terminals of switches and receptacles marked CO/ALR are suitable for use with ______, ______, and ______ conductors.Wire connectors marked AL/CU are suitable for use with _____, _____, and _____ conductors.A wire connector bearing no marking or reference to AL, CU, or ALR is suitable for use with (copper) (aluminum) conductors only. (Circle the correct answer.)When Type NM cable is run through a floor, it must be protected by at least ______ in. (_____ mm) of ________When nonmetallic-sheathed cables are bunched or bundled together for distances longer than 24 in. (600 mm), what happens to their current-carrying ability?In diagrams A and B, nonmetallic-sheathed cable is run through the cold air return. Which diagram Meets Code? A _____ B _____ Check one.The marking on the outer jacket of a nonmetallic-sheathed cable indicates the letters NM-B. What does the letter B signify? ________A 120-volt branch circuit supplies a resistive heating load of 10 amperes. The distance from the panel to the heater is approximately 140 ft. Calculate the voltage drop using (a) 14 AWG, (b) 12 AWG, (c) 10 AWG, (d) 8 AWG copper conductors. See 210.19(A), Informational Note No. 4 and 215.2(A)(1), Informational Note No. 2.In problem 35, it is desired to keep the voltage drop to 3% maximum. What minimum size wire would be installed to accomplish this 3% maximum voltage drop? See 210.19(A), Informational Note No. 4 and 215.2(A)(1), Informational Note No. 2.37R The allowable ampacity of a 4 AWG THHN from Table 310.15(B)(16) is 95 amperes. What is this conductors ampacity if connected to a terminal listed for use with 60C wire? ______If, because of some obstruction in a wall space, it is impossible to keep a Type NM cable at least 1 in. (32 mm) from the edge of the stud, then it shall be protected by a metal plate at least in. thick.The recessed fluorescent luminaires installed in the ceiling of the recreation room of this residence are connected with trade size flexible metal conduit. These flexible connections are commonly referred to as fixture whips. Does the flexible metal conduit provide adequate grounding for the luminaires, or must a separate equipment grounding conductor be installed? ________________41R What size overcurrent device protects the air-conditioning unit?May the 20-ampere small-appliance branch circuits in the kitchen of a residence also supply the lighting above the kitchen sink and under-cabinet lighting? Check the correct answer. Yes______ No ______A 30-ampere branch circuit is installed for an electric clothes dryer. What is the maximum ampere rating of a dryer permitted by the NEC to be cord-and-plug connected to this circuit? Check the correct answer. a. ______ 30 amperes b. ______ 24 amperes c. ______ 15 amperes In many areas, metal framing members are being used in residential construction. When using nonmetallic-sheathed cable, what must be used where the cable is run through the metal framing members?_______Are set screwtype connectors permitted to be used with armored cable that has an aluminum armor? _____Most armored cable today has 90C conductors. What is the correct designation for this type of armored cable?______If you saw two different types of SE cables, how would you distinguish them?Circle the correct answer defining the type of location:The identified grounded circuit conductor must be _____ or _____ in color.Explain how lighting switches are rated.4R 5R To control a lighting load from one control point, what type of switch would be used?7R Complete the connections in the following arrangement so that both ceiling light outlets are controlled from the single-pole switch. Assume the installation is in cable.Complete the connections for the diagram. Installation is cable.A three-way switch may be compared to a _____ switch.11R Complete the connections in the following arrangement so that the lamp may be controlled from either 3-way switch.When connecting 4-way switches, care must be taken to connect the travelers to the ____________ terminals.Show the connections for a ceiling outlet that is to be controlled from any one of three switch locations. The 120-volt feed is at the light. Use colored pens or pencils. Assume the installation is in cable.Match the following switch types with the correct number of terminals for each.When connecting single-pole, 3-way, and 4-way switches, they must be wired so that all switching is done in the _____ circuit conductor.What section of the Code emphasizes the fact that all circuiting must be done so as to avoid the damaging effects of induction heating? ____________If you had to install an underground 3-wire feeder to a remote building using three individual conductors, which of the following installations Meets Code? Circle the correct installation.Is it always necessary to attach the bare equipment grounding conductor of a nonmetallic-sheathed cable to the green hexagon-shaped grounding screw on a receptacle? Explain.List the methods by which an equipment grounding conductor is connected to a device box.When two nonmetallic-sheathed cables (Type NM-B) enter a box, is it permitted to bring both of the bare equipment grounding conductors directly to the grounding terminal of a receptacle, using the terminal as a splice point? _______Define an equipment grounding conductor.When metal toggle switchplates are used with nonmetallic boxes, the faceplate must be grounded according to 404.9(B). How is this accomplished? __________Does the Code permit the ampacity of switch legs to be less than the ampere rating of the branch circuit? _____________26R 27R Explain the operation of a ground-fault circuit interrupter. Why are GFCI devices used? Where are GFCI receptacles required? _________________________________2R Where must GFCI receptacles be installed in residential garages?4R 5R A homeowner calls in an electrical contractor to install a separate circuit in the basement (unfinished) for a freezer. Is GFCI protection of the receptacle required? __________________________________________________________________________7R Extremely long circuit runs connected to a GFCI branch-circuit breaker might result in: (Circle the correct answer.) a. nuisance tripping of the GFCI. b. loss of protection. c. the need to reduce the load on the circuit.If a person comes in contact with the hot and grounded conductors of a 2-wire branch circuit that is protected by a GFCI, will the GFCI trip OFF? Why? _________What might happen if the line and load connections of a feed-through GFCI receptacle were reversed? ________________________Is a GFCI receptacle permitted be installed as a replacement in an old installation where the 2-wire circuit has no equipment grounding conductor? _________________12R 13R 14R 15R Construction sites can be dangerous because of the manner in which extension cords, portable electrical tools, and other electrical equipment are used and abused. To reduce this hazard, 590.6(A) of the NEC requires that all 125-volt, single-phase, 15-, 20-, and 30-ampere receptacle outlets used for temporary wiring during construction must be _________________ protected.17R 18R The term SPD is becoming quite common. What do the letters stand for? __________Transients (surges) on a line can cause spikes or surges of energy that can damage delicate electronic components. A SPD device contains one or more that bypass and absorb the energy of the transient. _________________________________________________21R 22R Some line transients are not damaging to electronic equipment but can cause the equipment to operate improperly. The effects of these transients can be minimized by installing _________________Briefly explain the operation of an immersion detection circuit interrupter (IDCI). ___________________________What range of leakage current must trip an IDCI?26R Other than for a few exceptions, the NEC requires that all systems having a voltage of over ____________ volts shall be grounded.In an old house, an existing nongrounding non-GFCI-type receptacle in a bathroom needs to be replaced. According to 406.4(D)(3), this replacement receptacle shall be: (Circle the correct answer.): a. a nongrounding-type receptacle. b. a GFCI-type receptacle or be GFCI protected in some other way, such as changing the breaker that supplies the receptacle to a GFCI type.29R NEC 210.12(A) requires AFCI protection for the branch-circuit wiring that supplies all electrical outlets in specific rooms in dwellings. The branch circuits serving which areas, locations, or rooms in dwellings are not required to have AFCI protection?When installing GFCI and AFCI circuit breakers in a panelboard, it is permissible to connect them to a multiwire branch circuit. (True) (False). (Circle the correct answer.)32R 33R A switch that is located inside a bedroom for an outdoor light does not require AFCI protection since the switch is not an outlet as defined in NEC Article 100. (True) (False) (Circle the correct answer.)Which of the following installations for a kitchen waste disposal that operates on a 15-ampere, 120-volt branch circuit requires AFCI protection? (Circle the correct answer.) a. The disposal operates by a switch that is installed above the kitchen counter. b. The disposal operates by a switch that is installed under the counter next to the disposal. c. Both (a) and (b) d. Neither (a) nor (b).The receptacle outlets in the garage are required to have both GFCI and AFCI protection. (True) (False) (Circle the correct answer.)Two 125-volt receptacles on a 20-ampere, 120-volt branch circuit are installed in the laundry room. One (1) is for the washer and is within 6 ft of the laundry sink and the other (2) is on a wall more than 6 ft from the sink. The receptacles are required to have: (Circle the correct answer.) a. GFCI and AFCI protection for both (1) and (2) b. GFCI and AFCI protection for (1) and only GFCI protection for (2) c. GFCI and AFCI protection for (2) and only AFCI protection for (1) d. GFCI and AFCI protection for (1) and only AFCI protection for (2)38R Is it permissible to install a recessed luminaire directly against wood ceiling joists when the label on the luminaire does not indicate that the luminaire is suitable for insulation to be in direct contact with the luminaire? This is a Type Non-IC fixture.If a recessed luminaire without an integral junction box is installed, what extra wiring must be provided? __________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________Thermal insulation is not permitted to be installed within __________________ in. (mm) of the top or ___________________ in. (mm) of the side of a recessed luminaire unless the luminaire is identified for use in direct contact with thermal insulation. This is a Type Non-IC fixture.Recessed luminaires are available for installation in direct contact with thermal insulation. These luminaires are required to be marked Type ________________________.Unless specifically designed, all recessed incandescent luminaires must be provided with factory-installed ______________________________________________________.Plans require the installation of surface-mounted fluorescent luminaires on the ceiling of a recreation room that is finished with low-density ceiling fiberboard. What sort of mark would you look for on the label of the luminaire? ________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________A recessed luminaire bears no marking indicating that it is Identified for Through-Wiring. Is it permitted to run branch-circuit conductors other than the conductors that supply the luminaire through the integral junction box on the luminaire? ___________________ ____________________________________________________________________________8R Additional backup protection for ballasts can be provided by connecting a(n) ______________________________________________ with the proper size fuse as recommended by the ballast manufacturer.10R The Code places a maximum open-circuit voltage on lighting equipment in or on homes. This maximum voltage is (600) (750) (1000). (Circle the correct answer.) Where in the NEC is this voltage maximum referenced? _______________The letter E in a circle on a ballast nameplate indicates that the ballast _________________ ___________________________________________________________________________ ___________________________________________________________________________A 120-volt lamp fluorescent ballast for two 40-watt lamps is marked 85 volt-amperes. What is the power factor of the ballast? ________________________________________________ __________________________________________________________________________ __________________________________________________________________________Can an incandescent lamp dimmer be used to control a fluorescent lamp load? __________________________________________________________________________A good rule-of-thumb to estimate the expected life of a motor, a ballast, or other electrical equipment is that for every ____________ C above rated temperature, the expected life will be cut in __________________.A post light has a 120-volt, 60-watt lamp installed. The lamp has an expected lamp life of 1000 hours. The homeowner installed a dimmer ahead of the post light and leaves the dimmer set so the output voltage is 100 volts. The lamp burns slightly dimmer when operated at 100 volts, but this is not a problem. What is the expected lamp life when operated at 100 volts?____________________ ______________________________________ ______________________________________ ______________________________________Define the following terms. a. A tap conductor is ________________ _______________________________ b. A fixture whip is _________________ _______________________________Circle the correct answer for the following statements: a. Always match a fluorescent lamps wattage and type designation to the type of ballast in the luminaire. (True) (False) b. It really makes no difference what type of fluorescent lamp is used, just so the wattage is the same as marked on the ballast. (True) (False)Circle the correct answer for the following statements. a. When selecting a trim for a recessed incandescent luminaire, select any trim that physically fits and can be attached to the luminaire. (True) (False) b. When selecting a trim for a recessed incandescent luminaire, select a trim that the manufacturer indicates may be used with that luminaire. (True) (False)1R 2R A good rule to follow is to never load a circuit to more than _________ % of the branch-circuit rating.4R For residential wiring, not less than one 15-ampere lighting branch circuit should be provided for every ______________ ft2 of floor area. If 20-ampere lighting branch circuits are used, provide one 20-ampere lighting branch circuit for every _____________ ft2 of floor area.For this residence, what are the estimated wattages used in determining the loading of branch circuit A16? Receptacles ___________________ watts (volt-amperes) Clothes closet fixture ___________________ watts (volt-amperes)a. What is the ampere rating of circuit A16? _________________ b. What is the conductor size of circuit A16? _________________The NEC requires what type of unique protection for all 120-volt, 15- and 20-ampere branch-circuit outlets in bedrooms of residential homes? In which section of the NEC is this requirement found? _____________________9R 10R 11R 12R Is the switched portion of an outlet mounted toward the top or the bottom? Why? __________________ __________________The following problems pertain to luminaires in clothes closets. a. Does the Code permit bare incandescent lamps to be installed in porcelain key-less or porcelain pull-chain lampholders? ________________ b. Does the Code permit bare fluorescent lamp luminaires to be installed? ________________ c. Does the Code permit pendant lampholders to be installed? ________________ d. What is the minimum clearance from the storage area to surface-mounted incandescent luminaires? ________________ e. What is the minimum clearance from the storage area to surface-mounted fluorescent luminaires? ________________ f. What is the minimum distance between recessed incandescent or recessed fluorescent luminaires and the storage area? ________________ g. Define the storage area. ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ h. If a clothes hanging rod is installed where there is access from both sides, such as might be found in a large walk-in clothes closet, define the storage area under that rod. ___________________________________ ___________________________________How many switches are in the bedroom circuit, what type are they, and what do they control? _____________________ ____________________________ ____________________________The following is a layout of the lighting circuit for the Front Bedroom. Using the cable layout shown in Figure 8-7, make a complete wiring diagram of this circuit. Use colored pencils or pens.17R The Code uses the terms watts, volt-amperes, kW, and kVA. Explain their significance in calculating loads. ___________________ _________________________________ _________________________________ _________________________________ _________________________________How many 14 AWG conductors are permitted in a device box that measures 3 in. 2 in. 2 in.? ___________________A 4 in. 1 in. octagon box has one cable clamp and one luminaire stud. How many 14 AWG conductors are permitted? ____________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________What circuit supplies the Master Bedroom?What unique type of electrical protection is required for all 120-volt, single-phase, 15-and 20-ampere branch circuits in certain habitable rooms and areas in new dwellings? Where in the NEC is this requirement found? ____________________4R 5R 6R What is the estimated load in volt-amperes for the circuit supplying the Master Bedroom? _________________________________________________________________8R How many conductors enter the ceiling fan/light wall box?What type and size of box may be used for the ceiling fan/light wall box?11R a. Does the circuit for the Master Bedroom have a grounded circuit conductor? ____________________ b. Does it have an equipment grounding conductor? ____________________ c. Explain the difference between a grounded conductor and an equipment grounding conductor. ____________________ ____________________Approximately how many feet (meters) of 2-wire cable and 3-wire cable are needed to complete the circuit supplying the Master Bedroom? Two-wire cable: ___________ ft (___________ m). Three-wire cable: ___________ ft (___________ m).If the cable is laid in notches in the corner studs, what protection for the cable must be provided? ______________________________________________________________ _______________________________________________________________________15R 16R 17R 18R 19R Show your calculations of how to select a proper wall box for the clothes closet luminaire switch. Keep in mind that the available space between the wood casings is small. See Figure 9-1. _________21R The following is a layout of the lighting circuit for the Master Bedroom. Using the cable layout shown in Figure 9-1, make a complete wiring diagram of this circuit. Use colored pencils or pens.23R 24R May a standard electronic dimmer be used to control the speed of a fan motor? ___________________26R 1R There is a 3-way switch in the bedroom hallway leading into the living room. Show your calculation of how to determine the box size for this switch. The box contains cable clamps.What wattage was used for each vanity luminaire to calculate the estimated load on Circuit A14? ____________________________________________________________

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