Chapter 3 review questions

what is the smallest sized wired that can be used in a branch circuit rated at 20 amps.

12 AWG

branch circuit conductors and overcurrent proection for a continuous load shall not be less than

125%

The minimum number of outdoor conductors for a residence is

2 NEC210.52 front and rear of the house

what type of circuit must be provided for receptacle outlets in the kitchen, pantry, dinning room, and breakfast room?

2 or more 20 amp branch circuits

the over current device must not be sized over

20 amps

if the connected load is fixed nomotor, noncontinuos loads, the branch curcuit overcureent device may be sized at

25 amps

a 25 amp branch circuit conductor is derated at 70%. what is the derated ampacity?

25 times .7

what is the unit load per sq ft for dwelling units?

3 volts amps

Laundry equipment outlets are placed

6ft

how many lighting branches are provided in the dwelling?

7 branches

what is the minimum number of 15 amp lighting branch circuit required if the dwelling has an occupied area of 400 ft sq

7 branches

yes or no for areas that have or do not have split wired receptacles

Attic- yes stairway-yes crawl space- yes hallway- yes bathroom- no clothes closet- no

How is the load determined for outlets supplying specific appliances?

Based on the amp rating of the appliance

the receptacles in both bathrooms are to be served by the same 20 amp circuit. True or false

False

outlets in the basement and for the laundry must be _____ protected

GFCI

How are branch circuits rated?

In amps or the setting of the overcurrent device

code about the fire alarms

NEC 210.25

where in code does it say the outlets are not to be connected to the lighting because of overloads by high voltage

NEC210.11 C 3

the code requires that at least one 20 amp circuit feeding a receptacle outlet must be provided for the laundry. May this cirucit supply other outlets?

No

What dimensions are used when measuring the area?

Outside

what spaces are not included in the floor area?

Porches, patios, attics, crawl spaces

for this seperate circuit an additional 1500 volt amps _____ be added to the load calculations for dwellings.

Shall not

How is the minimum number of outlets determined for most occupied rooms?

Should be an outlet every 6ft

if a homeowner has 2 bathrooms the code states that they have to be connected to 20 amp branch circuit and also be on separate circuits. True or false?

True

How is the rating of a branch circuit protective device affected when the conductors used are larger size than called for by code?

Up the amps and up the AWG

how is the required number of branch circuits determined?

amps/ 15

what is the minimum load allowance for small appliance circuits for dwellings? (Nec 220.52 A)

at least 20 amps

In a single family dwelling how is the overcurrent protection for branch circuits required to be provided?

cannot be less than noncontinuous load 125% of continuous load Flexible conductors are to be protected and rating cannot exceed to application

What is the meaning of calculated load?

estimated usage draw in amps per sq ft

how is the total load in volt amps for lighting purposes determined?

ft sq of all habitable spaces times the unit load

Code requires all receptacle installed outdoors to be GFCI protected, except.

if they are not easily accessible and are running snow or melting equipment

homeowner wants a swag lamp, is this required for 20 amp small appliance curcuit

no

no point along the wall shall be 6ft from an outlet, does this apply in an unfinished basement

no

small appliance outlets are _____ included in the 3 volt amp per sq ft calculations

not

the rating of the overcurrent protection device must _________the ampacity of a conductor

not be less than

how many receptacles are required on 13ft wall space between 2 doors

one

when determining the location and number of receptacles required, fixed room dividers and railing ____ considered as wall space

shall not be

What is branch circuit?

the circuit conductors between the final overcurrent protection, protecting the circuit and the outlets

The rating of a branch circuit is based on?

the rating of the over current device

A three way switch must be where in a home with more than 6 risers

the top of the stairs and the bottom of the stairs

how is the total lighting load determinded?

total amps/ nominal volts

is a receptacle outlet required in a home when the hallway is 8ft

yes

is a receptacle required in a bedroom 3ft wall space behind a door that is normally open

yes