Question 1

Dishwashers and kitchen waste disposers may be connected to any of the required 20-ampere small-appliance branch circuits in the kitchen.

Accepted Answer

Dishwashers and kitchen waste disposers require their own dedicated circuit and should not be connected to the 20-ampere small-appliance branch circuits that are meant for countertop outlets and other kitchen appliances.

Question 2

NEC 210.23(A)(2) limits cord-connected equipment to ____________________ percent of the branch-circuit ampere rating.

Accepted Answer

80
eighty

Question 3

The two general methods of connecting food-waste disposers are hard-wired and ____________________.

Accepted Answer

cord-and-plug connection
cord and plug connection

Question 4

Article ____, Part VI, covers equipment grounding and equipment grounding conductors.

Accepted Answer

Part VI of Article 250 covers equipment grounding and equipment grounding conductors in the National Electrical Code.

Question 5

A duplex grounding-type receptacle is usually installed in an accessible location under the sink for plugging in the dishwasher and food waste disposer, and it does not have to be ____ protected.

Accepted Answer

A GFCI (Ground Fault Circuit Interrupter) provides protection against electrical shock in wet or damp areas, such as a kitchen sink, which is why it is required for the receptacle installed for the dishwasher and food waste disposer. AFCI (Arc Fault Circuit Interrupter) is required for circuits that provide power to bedrooms, while AGC (Assured Grounding Conductor) and IDCI (Isolated Ground Fault Circuit Interrupter) are not relevant to this scenario.

Question 6

Because of the problem of people being scalded, many municipalities and states have implemented code requirements that water heater thermostats be set at not over 120 degrees F (49 degrees C).

Accepted Answer

Many municipalities and states have indeed implemented such code requirements to prevent people from being scalded by hot water.

Question 7

Small-appliance circuits are intended to serve countertops for cord-connected ____ appliances only.

Accepted Answer

Small-appliance circuits are specifically designed for portable appliances that are frequently used on countertops, such as blenders, toasters, and microwave ovens. These appliances are generally low-power and under 1/3 horsepower, but the key feature is that they can be moved around and plugged into an outlet on the countertop. Fixed-in-place appliances would typically require a dedicated circuit. Therefore, the best choice is B, portable appliances.

Question 8

Portable dishwashers are supplied with a 3-wire cord and plug. If the 3-wire plug cap is plugged into a properly connected ____________________ receptacle, the dishwasher is adequately grounded.

Accepted Answer

The answer of Portable dishwashers are supplied with a 3-wire...

Question 9

Explain why a 125-volt, 15- or 20-ampere receptacle installed in an under-cabinet space to supply a dishwasher and/or food-waste disposer is not required to have GFCI protection for personnel.

Accepted Answer

The answer of Explain why a 125-volt, 15- or 20-ampere...

Question 10

Per the specifications, the branch-circuit conductors for food waste disposers and dishwashers are ____ AWG.

Accepted Answer

According to NEC 422.16(B)(4) and 422.16(B)(3)(5), the minimum branch-circuit conductor size for food waste disposers and dishwashers is 12 AWG.

Question 11

The maximum flexible cord length permitted for a kitchen waste disposer is ____.

Accepted Answer

The answer of The maximum flexible cord length permitted for...

Question 12

A dual-element fuse sized at approximately 125% of the full-load current rating of the motor adds extra overcurrent protection to the overload protection built into a food-waste disposer.

Accepted Answer

A dual-element fuse sized at approximately 125% of the full-load current rating of the motor provides extra overcurrent protection to the overload protection built into a food-waste disposer. This is because the fuse will open and disconnect the circuit if the current exceeds the rated value, providing an additional layer of protection for the motor.

Question 13

All motor-driven appliances must be provided with a means disconnecting the appliance from the ungrounded conductors. The branch-circuit breaker can serve as the disconnecting means if within sight of the appliance or capable of being ____________________.

Accepted Answer

The answer of All motor-driven appliances must be provided with...

Question 14

When a food-waste disposer has an integral ON-OFF switch, an additional separately installed switch ____ required.

Accepted Answer

An additional separately installed switch is not required if the food-waste disposer already has an integral ON-OFF switch.

Question 15

Lock-off provisions for appliances must be permanently installed on the ____________________ or switch.

Accepted Answer

The answer of Lock-off provisions for appliances must be permanently...

Question 16

The Code Article that specifically addresses electrical appliances is ____________________.

Accepted Answer

The answer of The Code Article that specifically addresses electrical...

Quiz 21: Special-Purpose Outletsfood Waste Disposer, Dishwasher