Lesson 117 - Lighting and Small Appliance Branch Circuits Homework

exposed (2017 NEC: 250.110)

Section 250.110 in the NEC ® requires all ___ non-current-carrying metal parts of electrical equipment in bathrooms to be grounded.

False (2017 NEC: 406.5(E))

Section 406.5(E) in the NEC ® permits receptacles to be installed in a face-up position in countertops or similar work areas in a dwelling.

3 (2017 NEC: 210.52(C)(1))

The plan view of a residential kitchen is shown in Figure 117.306. The fewest number of receptacles that can be installed along the wall in countertop space B (between the cutting board and the sink) is ___.

1 (2017 NEC: 210.52(H))

A 10,000 sq.ft. dwelling has a hallway that is 80 feet in length. The minimum number of receptacles required by the NEC ® in this hallway is ___.

double insulated (2017 NEC: 250.114)

A 120-volt cord-and-plug connected appliance is permitted to have a two-wire cord ("hot" & neutral) and attachment plug instead of a three-wire cord ("hot," neutral & ground) when the appliance is ___.

Yes (2017 NEC: 100_Bathroom)

Adjacent to the master bedroom in a home is a dressing room containing a vanity with a sink and a mirror. Entry to a room containing a Jacuzzi tub and a toilet is through a door from the dressing room. Are the dressing room and the Jacuzzi room considered to be a bathroom by the NEC ®?

not specified (2017 NEC: 210.52(C)(1) N/A)

Along a kitchen countertop in a restaurant, the maximum spacing between receptacles is ___.

overcurrent protective device rating (2017 NEC: 210.18)

Branch circuits are rated according to their ___.

I & II only (2017 NEC: 210.8(A)(3) | 2017 NEC: 210.8(B)(4))

For a dwelling, a 125-volt, 20-ampere receptacle installed outside is required to be ___. I. GFCI protected II. weatherproof III. a minimum of 3 feet above grade

are not (2017 NEC: 406.9(C))

GFCI-protected receptacles ___ permitted to be installed within a tub or shower space.

0 (2017 NEC: 210.11(C)(1) N/A)

How many 20-amp kitchen countertop receptacle circuits are required in a restaurant?

36 inches (2017 NEC: 210.52(D))

In a bathroom in a house, at least one receptacle must be installed within ___ of the outside edge of each basin, and this receptacle must be located on the wall or partition adjacent to the basin.

as many as the plans indicate (2017 NEC: 406.9(C) N/A)

In a dwelling, how many receptacles are permitted to be installed on the wall within 3 feet of a bathtub?

is not (2017 NEC: 210.52(B)(2))

In a dwelling, kitchen lighting ___ permitted to be supplied by either of the two 20-ampere small-appliance circuits required for the kitchen and dining room area.

a toaster (2017 NEC: 210.52(B)(2))

In a dwelling, which of the following are permitted to be connected to one of the small-appliance branch circuits?

any of these (2017 NEC: 410.36(B))

In a suspended ceiling system, lay-in luminaires shall be securely fastened to the ceiling framing member by mechanical means such as ___. Select one: a. rivets b. bolts c. listed clips d. screws e. any of these

damp (2017 NEC: 100_Location, Damp)

Partially protected areas, such as under the roof of the open front porch of a house, are considered ___ locations according to the NEC ®.

False (One two-gang and one single-gang box are required.)

Refer to Figure 117.108. The five switches shown adjacent to the bathroom door are to be installed in a 5-gang box.

210.11(C)(3) (2017 NEC: 210.11(C)(3))

Section ___ in the NEC ® requires that a separate 20-amp branch circuit be installed for receptacles in dwelling bathrooms. Select N/A (not applicable) if there is not a Code reference for this.

210.8(A)(1) (2017 NEC: 210.8(A)(1))

Section ___ in the NEC ® requires that receptacles in dwelling bathrooms be GFCI protected. Select N/A (not applicable) if there is not a Code reference for this.

210.52(C)(1) (2017 NEC: 210.52(C)(1))

Section ___ in the NEC ® specifies the number of receptacles to be installed along a kitchen countertop in a house. Note: Select N/A ( not applicable) if there is not an NEC ® requirement.

210.52(B)(2) Exception 1 (2017 NEC: 210.52(B)(2) Exc 1)

Section ___ of the NEC ® states that small appliance circuits should have no other outlets, except for a clock.

either a or b (2017 NEC: 210.21(B)(3))

Several duplex receptacles connected to a 20-ampere, small-appliance branch circuit serving a kitchen and a dining room ___. Select one: a. may be rated 15 amperes b. may be rated 20 amperes c. either a or b d. neither a nor b

two-wire

Some portable appliances use double insulation in place of grounding to provide shock protection to users. Double-insulated appliances normally have ___ power cords and attachment plug caps.

under all circumstances (2017 NEC: 210.8(A)(6) | 2017 NEC: 210.8(B)(2))

The 125-volt, 20-ampere receptacles installed to serve kitchen countertops are required to have GFCI protection ___.

none of these (2017 NEC: 210.52(H) N/A)

The Code reference that specifies the required number of receptacles in a hallway located in non-dwellings is ___. Select N/A (not applicable) if there is not a Code reference for this. Select one: a. 210.52(H) b. 210.52(A)(3) c. 210.60(B) d. 210.70(A)(2)(a) e. none of these

False (2017 NEC: 410.10(D))

The NEC ® permits a surface mounted luminaire (lighting fixture-such as shown below) to be installed on the ceiling within a shower stall. The shower stall has a 7-foot ceiling.

both I & II (2017 NEC: 210.8(B)(2))

Wall-to-wall kitchen dimensions are 9 ft by 9 ft The plan view of a restaurant kitchen is shown in Figure 117.305. Receptacle(s) ___ are required to be GFCI protected per the NEC ®. I. 9 II. 8

any of these.

GFCI protection can be provided for receptacles serving kitchen countertop areas in a dwelling by installing ___. Select one: a. a dual-function AFCI/GFCI circuit-breaker on each 20-ampere small appliance branch circuit. b. an AFCI circuit breaker with GFCI receptacles at each location. c. an AFCI circuit breaker with a GFCI receptacle at the first outlet on the circuit which can then protect downstream receptacles on the circuit. d. any of these.

all of these

Good housekeeping ___. Select one: a. is an OSHA requirement b. keeps you safe c. saves time d. all of these

both a and b

Good housekeeping on the jobsite ___. Select one: a. affects your safety b. affects how much work you get done c. both a and b d. neither a nor b

410.10(A) (2017 NEC: 410.10(A))

The Code reference that requires luminaires installed in specific locations (such as wet, damp, or dry) to have markings identifying the luminaire as suitable for that location is ___. Select N/A (not applicable) if there is not a Code reference for this.

Immersion Detection Circuit Interrupter

IDCI is an abbreviation for ___.

any of these (2017 NEC: 100_Bathroom)

A bathroom is defined as an area including a basin, with one or more of the following: ___. Select one: a. shower b. tub c. toilet d. any of these

outlet (2017 NEC: 100_Outlet)

A(n) ___ is a box that contains only branch circuit conductors that are "hard wired" to a piece of equipment.

4 feet (2017 NEC: 210.52(C)(1))

Along a kitchen countertop in a house, the maximum spacing between receptacles is ___.

all of these

An orderly work site ___. Select one: a. avoids duplicate material orders b. enables you to more easily find material and tools c. makes you more productive d. all of these

Yes (2017 NEC: 410.36(G))

Are outdoor luminaires permitted to be attached to living trees?

suitable for damp locations (2017 NEC: 410.10(A))

As a minimum requirement, luminaires installed on the outside of an office building under a covered entryway must be marked as ___.

True

Established walkways on the jobsite should be kept clear of debris.

none (2017 NEC: 210.52(C)(1))

Refer to the plan view shown in Figure 117.307. At least ___ receptacle(s) must be installed along the 11" countertop space. in this residential kitchen per the NEC ®.

3 (2017 NEC: 210.52(C)(1))

Refer to the plan view shown in Figure 117.307. At least ___ receptacle(s) must be installed along the 6'-4" + 4'-8" space (between the end of the countertop and the edge of the sink) in this residential kitchen per the NEC ®.

Yes (2017 NEC: 210.52(E)(3))

The front porch of the EWR residence shows that a receptacle is to be installed. Does the NEC ® require the receptacle to be installed on the porch?

both I & II (2017 NEC: 210.8(A)(6))

Wall-to-wall kitchen dimensions are 9 ft by 9 ft Refer to the plan view for a residential kitchen shown in Figure 117.305. Receptacle(s) ___ must be GFCI protected. I. 1 II. 6

3 feet (2017 NEC: 410.10(D))

What is the minimum horizontal clearance for a hanging luminaire (fixture) from the rim of a bathtub or spa?

put things where they belong

When cleaning up a jobsite at the end of the day, you should ___.

250.114 (2017 NEC: 250.114)

Which NEC ® section requires residential cord-connected appliances to be connected to an equipment grounding conductor?

No (2017 NEC 210.70(A)(2)(3))

Is it permitted by the NEC ® to control the lighting in a stairwell with a single-pole switch located at the foot of the stairs? The stairwell is located in a home you are building and allows access between the 1 st and 2 nd floors.

3 1/ 2 (16 circuit conductors and four devices = 4 × 2 = 8 conductors SUM = 24 × 2.5 = 60 cu. inches required 60 ÷ 4 = 15 cu. in. is the minimum volume of ONE box -> 3 × 2 × 31/2 box 2017 NEC: 314.16(B) | 2017 NEC: 314.16(A) (Table))

Refer to Figure 117.107 to determine the number of wires entering the box. RMC (rigid metal conduit) with 10 AWG wire is the wiring method used. An equipment grounding conductor will not be installed. Four 3" × 2" metal switch boxes will be ganged together to form a 4-gang box for the switches. The minimum depth of EACH box is ___ inches.

1 "switch leg" + 1 "hot" + 1 neutral

Figure 117.201 Circuit LA-6 originates in a 120/240-volt, 1Ø panelboard. All luminaires are rated for 120 volts. Each fluorescent luminaire contains 34-watt lamps. For circuit calculations use only the lamp load and disregard the current used by the ballasts. The 1' × 4' luminaires are controlled by the SP switch. Type MC cable is installed as shown above. Refer to Figure 117.201. Cable B contains the following conductors:

210.11(C)(1) (2017 NEC: 210.11(C)(1))

Section ___ in the NEC ® specifies the number of 20-amp kitchen countertop receptacle circuits to be installed in a kitchen in a dwelling. Note: Select N/A ( not applicable) if there is not an NEC ® requirement.

lighting outlet (2017 NEC: 100_Lighting Outlet)

When conductors are run into a box and a luminaire (or lighting fixture) is installed, this box is a(n) ___ per the NEC ® definition.