Question 1

To determine the minimum amount of CFM needed, multiply the square footage of the house by four.

Accepted Answer

The correct formula for determining the minimum amount of CFM needed is to multiply the square footage of the house by 0.07 to 0.10, depending on factors such as insulation, ceiling height, and number of occupants.

Question 2

The NEC requires GFCI protection for ____.

Accepted Answer

A

Question 3

Never connect the green equipment grounding conductor to the ____________________ branch circuit conductor.

Accepted Answer

grounded
white

Question 4

Calculate the current rating of a 1,500-watt heat/vent/light unit for a residential bathroom connected to a 120-volt circuit (ignoring power factor).

Accepted Answer

The answer of Calculate the current rating of a 1,500-watt...

Question 5

What is a humidistat?

Accepted Answer

The answer of What is a humidistat?...

Question 6

Bathroom exhaust fans, vents for clothes dryers, and similar high-humidity sources are never to be vented directly into the ____________________ or other dead spaces.

Accepted Answer

The answer of Bathroom exhaust fans, vents for clothes dryers,...

Question 7

The NEC considers fixed electric space heating to be a continuous load and the rating of the overcurrent device must not be less than 125 percent of the continuous load. What is the rating of the branch circuit for a 1500-watt space heater on a 120-volt circuit?

Accepted Answer

The answer of The NEC considers fixed electric space heating...

Question 8

NEC 300.3(B) states that all conductors of the same circuit and, where used, the neutral and all equipment grounding conductors shall be contained within the same ____.

Accepted Answer

NEC 300.3(B) specifies that all conductors of the same circuit, along with the neutral and equipment grounding conductors, must be contained within the same raceway, cable tray, trench, cable, or cord, making "all of the above" the correct answer.

Question 9

Whole house vinyl wraps (____) stop airflow through wall cavities, as well as holding out wind-driven rain from getting behind wood, vinyl, brick, and stucco siding.

Accepted Answer

The correct term for the product mentioned in the sentence is Tyvek, a brand of building wrap. The other options, Vinyk, Vinawrap, and Tywrap, are not commonly used or recognized terms in the construction industry.

Question 10

A hydromassage tub is a(n) ____________________ bathtub equipped with a recirculating piping system, pump and associated equipment.

Accepted Answer

The answer of A hydromassage tub is a(n) ____________________ bathtub...

Question 11

Overload protection prevents an exhaust fan motor from burning out if it ____ for any reason.

Accepted Answer

Overload protection prevents the motor from burning out if it stalls or overheats, so options A and B are correct. Option C, running too fast, is not a typical reason for motor burnout and is not specifically addressed by overload protection.

Question 12

Exhaust fans mounted into end gables or roofs of residences are available with an adjustable temperature control on the ____ of the fan.

Accepted Answer

The answer of Exhaust fans mounted into end gables or...

Question 13

The NEC allows which of the following disconnecting means for fixed appliances not over 300 volt-amperes or 1/8 horsepower?

Accepted Answer

The NEC permits all the listed options as disconnecting means for fixed appliances not exceeding 300 volt-amperes or 1/8 horsepower, including a branch-circuit breaker, an attachment plug cap, and a separate disconnect switch.

Question 14

NEC 424.3(B) considers fixed electric space heating to be a continuous load.

Accepted Answer

NEC 424.3(B) defines fixed electric space heating as a load that is continuously connected and doesn't change its location, making it a continuous load.

Question 15

For what purpose are pilot-light switches commonly used?

Accepted Answer

The answer of For what purpose are pilot-light switches commonly...

Question 16

The heat/vent/light is controlled by four switches, one switch each for the heater, the light, the exhaust fan, and the ____________________.

Accepted Answer

The answer of The heat/vent/light is controlled by four switches,...

Question 17

Exhaust fan ventilating capability is rated in ____.

Accepted Answer

Exhaust fan ventilating capability is rated in CFM (cubic feet per minute), which refers to the volume of air that can be moved by the fan in one minute. A higher CFM rating means the fan can move more air and is therefore more effective at ventilating a space. AMD, MRP, and CMA are unrelated to exhaust fan ventilation.

Question 18

According, to NEC 250.142(B), NEVER ground an appliance to the ____ grounded circuit conductor.

Accepted Answer

NEC 250.142(B) states that an appliance should never be grounded to the white grounded circuit conductor, commonly known as the neutral wire. This is because the neutral wire carries current under normal operation and using it as a ground wire could create a potential shock hazard. Instead, green or bare copper wires should be used as the grounding conductor for appliances.

Quiz 22: Special-Purpose Outlets for the Bathroom Ceiling Heatventlights K J, the Attic Fan L, and the Hydromassage Tub a