Chapter 12&15 Final
The load for each small-appliance, branch circuit load is required to be calculated at ____.
1,500 volt-amperes
For branch circuits rated 120 volts, 20 amperes, and supplying two or more receptacles, the receptacles are permitted to be rated ____.
15 & 20 Amp 125 volts
Duplex receptacles connected to a 20-ampere, small appliance branch circuit in kitchens and dining rooms ____.
15 to 20 amp
GFCI protection can be provided for convenience receptacles serving kitchen countertop areas by ____.
GFCI CB, GFCI Recept, GFCI to protect downstream recept
Split-wiring of receptacles in kitchens and other locations where high-load appliances are used is not always practical when ____.
GFCI receptacles are used
All of the following are acceptable disconnecting means for appliances, except for ____.
a horsepower-rated switch
Which of the following 125-volt, 15- and 20-ampere receptacle(s) installed in kitchens is (are) not required to be connected to the two 20-ampere small-appliance circuits required for the kitchen and dining room area?
a recept: sink > food waste diposer, plug in a frig, gas appliance to ignite
Which of the following kitchen equipment is permitted to be connected to the two 20-ampere small-appliance circuits required for the kitchen and dining room area?
clock outlet
Receptacles rated 30 amperes are referred to as ____, and receptacles rated 50 amperes are called ____.
dryer, range
Three-wire circuits are more efficient and cost effective than two-wire circuits, because they permit ____.
fewer conductor, smaller raceways, reduced voltage drop
Improper wiring or mishandling of multi-wire branch circuits can cause ____ connected to the circuit.
overloading of the grounded conductors, destruction due to overvoltage
When an existing dryer or electric range is replaced, the NEC ____ the grounded conductor of an existing individual branch circuit to be used for grounding the appliance frame.
permits
Cord sets rated 40, 45, or 50 amperes are usually called ____, and cord sets rated 30 amperes are called ____.
range, dryer
The sound level rating used to define fan noise is expressed in:
sones
A 125-volt, 15- and 20-ampere receptacle installed to serve a kitchen countertop is required ____.
supplied by at least (2) 20-ampere small appliance circuits, GFCI protection
When an appliance is not marked with its maximum overcurrent protection, the branch-circuit protection device is sized according to ____.
the ampacity of the branch-circuit conductors supplying the appliance
The NECâ requires that an appliance nameplate show ____.
the appliance rating in volts and amperes, or connected in volts and watts
Counter top receptacles must be served by at least ____-ampere small appliance circuits.
two 20
The 125-volt, 20-ampere receptacles installed to serve kitchen counter tops are required to have GFCI protection ____.
under all circumstances
Since the grounded (neutral) conductor is not permitted to be used for grounding the frames of dryers, these appliances require ____ power cords when receptacle connection is used.
four-wire
Because of the dangers associated with the open neutral (grounded conductor), NEC® 300.13(B) does not permit the continuity of the ____ to depend on a receptacle.
grounded (neutral)
A "unit switch" used as a disconnecting means for an electric clothes dryer shall ____.
interrupt all ungrounded circuit conductors
Kitchen lighting ____ permitted to be supplied by the two 20-ampere small-appliance circuits required for the kitchen and dining room area.
is not
The grounded conductor of a branch circuit is permitted to serve as the equipment grounding conductor for a replacement electric dryer when all the following conditions are met, except for ____.
the branch circuit is protected by time-delay fuses
In accessible attics, exposed cables must be protected by guard strips when ____.
they are run across the top of joists, face of studs, 7 ft of floor