Deck 10: Lighting Branch Circuitbathrooms, Hallway

Question 1

Explain why receptacles are not permitted to be installed in bathtub and shower spaces.

Answer 1

Receptacles are not permitted to be installed in bathtub and shower spaces because of the obvious hazards associated with water and electricity.

Question 2

The NEC permits all bathroom receptacles to be on a single ____ branch circuit so long as it doesn't supply other loads.

A) 15-ampere
B) 20-ampere

Answer 2

B

Question 3

Ceiling-suspended paddle fans must not be located within a zone measured ____ horizontally and ____ vertically from the top of the bathtub rim or top of a shower stall threshold.

A) 2 ft (600 mm); 6 ft (1.8 m)
B) 2 ft (600 mm); 8 ft (2.5 m)
C) 3 ft (900 mm); 6 ft (1.8 m)
D) 3 ft (900 mm); 8 ft (2.5 m)

Answer 3

D

Question 4

A bathroom is defined as "an area including a basin, with one or more of the following: ____.

A) toilet
B) tub
C) bidet
D) any of the above

Question 5

NEC 410.10(D) ____ lighting track to be located within a zone measured 3 ft (900 mm) horizontally and 8 ft (2.5 m) vertically from the top of a bathtub rim or top of a shower stall threshold.

A) permits
B) does not permit

Question 6

Recessed or surface-mounted luminaires and recessed exhaust fans ____ be located within the restricted zone near the bathtub.

A) may
B) may not

Question 7

Install luminaires listed for ____ locations if they will be subject to shower spray.

A) damp
B) humid
C) dry
D) wet

Question 8

One way to protect people from electrical shock is found on grooming appliances that are equipped with a special attachment plug cap. Under what condition does the plug cap provide protection?

Question 9

Explain the circumstance(s) under which switches are allowed to be installed in a tub or shower space.

Question 10

As defined in Article 100, a bathroom is required to have a ____.

A) toilet
B) basin
C) shower
D) tub

Question 11

Hanging light fixtures must be kept at least ____________________ feet horizontally and ____________________ feet vertically from the edge of the tub rim.

Question 12

For hallways of ____________________ or more in length, at least one receptacle outlet shall be required.

Question 13

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.

A) three-wire
B) 16 AWG or larger
C) Type SJT
D) two-wire

Question 14

With ____ products, it takes two failures to create a shock hazard to the user.

A) warrantied
B) double-insulated
C) American-made
D) insulated

Question 15

Explain the condition(s) under which a residential hallway is required to have one or more receptacles installed in it.

Question 16

Explain why bathrooms should not have overhead (ceiling) lighting only, but also wall-mounted lighting above or on either side of the mirror.

Question 17

Name at least three types of lighting fixtures and other equipment not permitted to be installed within the zone extending 3 feet horizontally and 8 feet vertically from the top of the bathtub rim.

Question 18

According to NEC 406.9, receptacles ____ permitted to be installed in bathtub and shower spaces.

A) are
B) are not

Question 19

When using nonmetallic-sheathed cable or armored cable, never use the bare equipment grounding conductor as a(n) ____________________ conductor, and never use the grounded circuit conductor as an equipment grounding conductor.

Question 20

Describe the two ways that receptacles in bathrooms may be GFCI protected.