Chapter 21 EO test

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

False

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.

GFCI

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

True

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).

True

Typically, where is the single-pole wall switch that controls a continuous feed food waste disposer located?

above the countertop

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

breaker

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

cord-and-plug connected

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 ____________________.

locked in the "off" positions

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

portable

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

12

How long should water be left running after shutting off the disposer to flush the drain clear of food waste particles?

15 seconds

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

3 ft (900 mm)

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.

3-wire grounding type

The Code Article that specifically addresses electrical appliances is ​Article ____________________.

422

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

80

Explain how to start and stop "batch feed" food waste disposers.

"Batch-feed" food waste disposers are equipped with an integral switch that starts and stops the disposer when the user twists the drain cover into place after filling the disposer with waste food.