ch. 5-8 test

false

AC cable shall be installed at least three-quarter inch back from the finished edge of framing members (t/f)

false

AC conductors installed in metal raceways or enclosures shall be arranged to provide induction heating of the metal raceways or enclosures (t/f)

50 v

AC systems of less than _____ v to ground shall be grounded when installed as overhead conductors

true

Copper conductors in a vertical raceway require more supports than any equivalent length of aluminum conductors (t/f)

false

The maximum standard rating for a fuse is 5000 A (t/f)

wireway

a ________________ is a metallic or nonmetallic trough with a hunger or removable cover designed to house and protect conductors and cables

multi outlet

a ___________________ assembly is a surface, flush, or freestanding raceway that contains conductors and receptacles

true

The continuity of the grounded conductor of a multi wire branch circuit shall never depend upon device connections (t/f)

true

electrical systems are grounded to limit and stabilize voltages to ground (t/f)

electrode grounding conductor

an ________________________________ is an electrical conductor that provides a ground fault current path

30 ft

an auxiliary gutter shall not extend more than _____ ' beyond the equipment it supplements

other

an example of a _________ space used for environmental air is the space over a hung ceiling used for environmental air

true

article 300 applies to the wiring that is part of equipment (t/f)

6 inch

at least _____ " of free conductor shall be left at each outlet, junction, or switch point

false

busways shall be used for indoor work only (t/f)

true

copper and aluminum conductors shall not be terminated in a manner that causes the dissimilar metals to come in direct contact with each other (t/f)

false

raceway systems are always permitted to be used to support other raceways cables or non-electric equipment (t/f)

thw

insulated conductors installed in wet locations shall be of a type _____ for the use

grounded electrode conductor

the __________________________ connects the egc and the grounded conductor at the service or separately derived system to the grounding of electrode

main bonding jumper

the __________________________ is the connection between the grounded circuit conductor and the egc at the service

raceway

the minimum size of the egc is based upon the rating of the _____________ ahead of the supplied equipment

higher

the next _______________ standard size ocpd of 800 a or less is permitted to be used where the ocpd does not correspond to a standard size

40%

when a conduit contains 3 or more conductors, the cross sectional area of the conductors shall not exceed ______ % of the internal cross-sectional area of the conduit

physical

when conductors are run in parallel in separate raceways, the raceways shall have the same ______________ characteristics

false

when used for equipment grounding purposes, only covered or insulated conductors are permitted (t/f)

true

type NM cable has a flame retardant and moisture resistant outer jacket that is restricted to indoor wiring (t/f)

false

type S fuses are designed for circuits not exceeding 100 V (t/f)

true

type USE cable is listed for direct burial (t/f)

heat

_________ is generated when current flows through a conductor

premises

_____________ wiring is basically all interior and exterior wiring installed on the load side of the service point or the source of a separately derived system

corrosive

_______________ conditions include installations where the conductors are exposed to oils, greases, vapors, etc. that break down the integrity of the conductors insulation

c

a ___ type conduit body has a hub at both ends

junction

a _____________ box is a box in which splices, taps, or terminations are made

raceway

a ______________ is a metal or nonmetallic encloses channel for conductors

true

In general the EGC may be a bear covered or insulated conductor (t/f)

true

Insulated conductors are the most common conductors installed in electrical systems

true

MC cable with a smooth sheath shall have a bending radius of a minimum of 10 times the diameter of the cable (t/f)

false

Per table 300.5 RMC shall be buried under 12 inches of earth beneath a highway (t/f)

true

The amount of current that flows in any circuit is determined by the voltage and resistance of the circuit (t/f)

false

The grounded conductor shall never be smaller than 10.5% of the largest service entrance conductors (t/f)

true

The least potentially damaging overcurrent occurs when there is an overload (t/f)

false

The only good choice for the grounding electrode of a separately derived system is the grounded building steel (t/f)

true

The use of an NM cable in any building or structure designated in NFPA 220 as type one or two is prohibited unless the NM cables are installed in raceways that are permitted in type one into construction (t/f)

nipple

a ______________ is a short piece of conduit or tubing that does not exceed 24" in length

4 awg

_____ awg and larger ungrounded conductors installed in a raceway that enters a box shall be protected by an identified insulating fitting

area subject to some moisture

a damp location is?

offset

an ________ is a double bend in a raceway

360 degree

a total run of pvc shall not exceed of _________ of bends

true

a trolley busway has an open bottom (t/f)

outlet

an __________ is any pint in the electrical system where current supplies utilization equipment

edison base

an _______________ fuse is a plug fuse that incorporates a screw configuration that is interchangeable with fuses of other ampere ratings

overcurrent

an ___________________ is any current excess of that for which the conductor or equipment is rated

18 inch

all cables and conductors emerging from the ground shall be protected from physical damage to a maximum depth of _____ " below finish grade

false

all conductors installed in electrical distribution systems shall be insulated (t/f)

inverse time

an ______________________ is a circuit breaker with an intentional delay between the time when the fault or overload is sensed and the time when the CB operates

false

aluminum electrodes may be used as grounding electrodes (t/f)

false

aluminum fittings and enclosure shall not be used with RMC (t/f)

feeder

ampacity of feeder taps not over 25' shall not less than 1/3 of the rating of the overcurrent protective device protecting the ____________ conductors

false

cable tray systems shall be installed as complete systems (t/f)

18 inch

cables and raceways in or under airport runways shall be buried to a minimum depth of _____"

24 inch

cables and raceways installed under streets, highways, roads, driveways, and parking lots shall be buried to minimum depth of ______ "

10000 amp

cartridge fuses with no markings are rated for ________ amps

true

circuit breakers shall clearly indicate whether they are in the open or closed position (t/f)

5000 amp

circuit breakers that are not marked have an interrupting rating of _______ amp

false

circuit breakers used as switches for 120 v fluorescent lighting circuit shall be marked SWD or HID (t/f)

true

conductors used for direct burial shall be identified for such use (t/f)

green

equipment grounding conductors, in general when they are insulated, shall be provided with an outer finish that is _________ in color

true

flexible cords and cables shall be protected against over current in accordance with their ampacities (t/f)

24 inch

the minimum cover for a direct-buried cable in a location not specified in table 300.5

1 1/4 inch

holes that are drilled into framing members to permit installation of raceways or cables shall be at least ______ " from the nearest edge of the wood member

1/4 inch

in an indoor wet location, the electrical panelboard metal enclosure shall be at least ______ " from the masonry wall

parallel

in general, fuses and circuit breakers shall not be connected in ____________

grey

in general, insulated grounded conductors (neutral) sizes 6 awg or smaller shall be identified with an outer finish that is white or _________

5/8 inch

the minimum diameter is _____ " for stainless steel rods and copper or zinc-coated steel rods

8 ft

the minimum length of a rod or pipe electrode is _____ '

damp

locations can be classified as either dry, _______, or wet

3

mc cable is a factory assembly of ___ or more conductors

10 ft

metal underground water piping with at least ____ ' of piping in direct contact with the earth shall be a part of the ges

insulation

no conductor shall be installed in such a manner that the operating temperature of its ______________ is exceeded

false

over current protective devices are permitted to be installed in clothes closets if they are located at least 12" from combustible materials (t/f)

false

overcurrent devices are permitted in bathrooms (t/f)

true

paralleled conductors shall be the same length (t/f)

125 v

plug fuses have a voltage rating of ______ v between conductors in most applications

hexagonal

plug fuses of 15 a and lower are identified by a _________________ configuration of the fuse window

true

seals shall be installed in spare or unused raceways and raceway systems whenever condensation is known to be a problem (t/f)

true

splices or taps are never permitted within a raceway (t/f)

service

the ___________ conductors extend from the service point to the service disconnecting means

slots

the inductive heating effect of metal is minimized by cutting ________ between the holes for conductors

2 1/2 ft

the minimum burial depth required for plate electrodes is _____ ' below the surface of the earth

90 degree

the three basic classifications of insulation ratings are 60 degree (c), 75 degree (c), and ____________________ (c)

true

thw conductors are permitted to be installed in wet locations (t/f)

true

under certain conditions EGC's are permitted to be run separate from their associated circuit conductors (t/f)

true

under certain conditions conductors of different systems (1000 volt or less AC and DC) may occupy the same raceway (t/f)

12 inch

underground, residential branch circuits that are rated 20 a, single phase, 120 v or less and are gfci protected shall have a minimum burial depth of _____"

1/16 inch

where required, cables or raceways in notches of framing members shall be protected from nails or screws by a steel plate at least ______ " thick