Chapter 2 Wiring And Protection Flashcards
A 240 volt boat hoist receptacle has to be?
GFCI protected
Non-dwelling unit receptacles installed in/on the_____ shall be gfci protected.
Roof tops, outdoors, and sinks
What is the minimum rating for a laundry circuit in a single family dwelling?
20 amps and 1,500 watts
A receptacle on a individual branch circuit can be rated for what percent?
100%
What size branch circuit shall apply only non-lighting loads?
50 amps
What type of [lamp holder] shall be connected to a load in excess of [20 amps?]
Heavy duty
The laundry outlet shall be installed within how many feet of the designated location?
6 feet
Receptacle outlet in the floor shall not be counted as part of the required number of wall receptacles unless located within how many inches of the wall?
18 inches
What is the minimum number of small appliances for a single family dwelling?
2 circuits
Other than counter top appliances, what type of device is allowed to utilize the small appliance circuit in a single family dwelling?
Refrigerator, clocks, and cooking equipment
Receptacles shall be installed so that no point along the wall line of a kitchen countertop is no more than ____ inches measured horizontally from a receptacle in that space?
24 inches
What is the minimum length of countertop in a kitchen that required the installation of a receptacle?
12 inches
Island counter tops, with a minimum dimension of 12”W x 24”D, must have at least ____ receptacle outlet.
1
18 feet of show window requires how many receptacles above window?
2
What is the maximum distance from a roof unit that the rooftop gfci service receptacle shall be located?
25 feet
A conference room is 250 sq ft and has a 12.5 ft wall. How many floor receptacles are needed?
1
Does a vehicle garage door require illumination under the illuminated entryway rule?
No
General branch circuit lighting load for a hospital shall be calculated at ___ watts per sq feet?
2
In dwelling units, new additions to the lighting branch circuit shall be calculated in accordance with 220.12 when over ____ square feet.
500
Where SE cable enters the building, the conduit has to be?
Sealed
The conductors for festoon lighting shall be supported by messenger wire in all spans exceeding?
40 ft
What is the minimum service rating for a single family dwelling with 6 or more 2 wire branch circuits?
100 amps
Circuit breakers used as switches in 120V flourecent lighting shall be marked as?
SWD & HID
What is the minimum height of a SE conductor rated 600 volts going above a pedestrian sidewalk?
15 feet
The minimum number of disconnects at the main service?
6
What is the minimum service disconnect of a commercial building?
60 amps
Serve as overcurrent protection, I’ll just connecting me and Shelby supplied on the line side of all fused circuits that exceed 150 V if the fuses are accessible to who?
Other than qualified personnel
Edison based fuses shall not operate at over then?
30 amps
A type S fuse installed in an edison base fuse holder for what primary reason?
Non-interchangeable
Conductor may be spliced together by____?
Exothermic welding
What size grounded conductor you can run in parallel?
1/0
Main panel enclosure serves as what?
Main bonding jumper
High impedance ground systems operate at a minimum of what voltage?
480 volts
A concrete encased electrode with electrically, conductive coated, steel, reinforcing bar shall be at least ______in diameter, and a minimum of 20 feet and continuous length?
1/2”
Minimum size wire for ground ring?
2 copper
How many feet of a rod electrode, be in contact with the Earth?
8 feet
A ground rod shall be at least how many inches in diameter?
5/8”
Minimum space between ground rods?
6 feet
What size grounding electrode conductor must always be protected from physical damage?
6 or bigger
When a metal enclosure is required to protect the grounding electrode conductor, the enclosure has to be bonded to what at both ends?
Grounding electrode conductor
What is the minimum Size main bonding jumper for 800 kcmil service entrance conductor?
2/0
What is the minimum Size copper clad grounding, electrode, conductor, needed for 200 amp single phase dwelling, copper feeder?
2 awg
200 x 83% 166 amps
