PEC Chapter 2 cont.

Service cables shall be supported by
straps or other approved means within ___ mm of every service head, gooseneck,
or connection to a raceway or enclosure and at intervals not exceeding ___ mm.

Cables that are not
approved for mounting in contact with a building or other structure shall be
mounted on insulating supports installed at intervals not exceeding ____ mm
and in a manner that maintains a clearance of not less than __ mm from the
surface over which they pass.

Where it is impracticable to locate the service head or gooseneck above
the point of attachment, the service head or gooseneck location shall be
permitted not farther than ___ mm from the point of attachment

The maximum setting
of the ground-fault protection shall be ___ amperes, and the maximum time
delay shall be one second for ground-fault currents equal to or greater than
___ amperes

Where the service voltage is over 600v,
service-entrance conductors shall not be smaller than ___ unless in
multiconductor cable. Multiconductor cable shall not be smaller than ____.

A device that, when
interrupting currents in its current-limiting range, reduces the current
flowing in the faulted circuit to a magnitude substantially less than that
obtainable in the same circuit if the device were replaced with a solid conductor
having comparable impedance

Refers to industrial
portions of a facility where the premises wiring system has 2500 kVA or greater
of load used in industrial process(es), manufacturing activities, or both.

A conductor, other
than a service conductor, that has overcurrent protection ahead of its point of
supply that exceeds the value permitted for similar conductors that are
protected

The ampacity of the
tap conductors, not over ___ mm long, for field installations where the tap
conductors leave the enclosure or vault in which the tap is made, the rating of
the overcurrent device on the line side of the tap conductors shall not exceed
10 times the ampacity of the tap conductor

The ampacity of the
tap conductors , not over ___mm long, 
shall not be less than one-third of the rating of the overcurrent device
protecting the feeder conductors

Plug fuses of __-ampere and lower rating shall
be identified by a hexagonal configuration of the window, cap, or other
prominent part to distinguish them from fuses of higher ampere ratings

The screw shell of a
plug-type fuseholder shall be connected to the ___ of the circuit

Plug fuses of the
Edison-base type shall be classified at not over ___ volts and ___ amperes and
below

___ fuses of an
ampere classification as specified in 2.40.5.4(a) shall not be interchangeable
with a lower ampere classification

___ adapters shall
fit Edison-base fuseholders

___ cartridge fuses of the renewable type
shall only be permitted to be used for replacement in existing installations
where there is no evidence of over fusing or tampering

Circuit breakers
rated at ___ amperes or less and ___ volts or less shall have the ampere rating
molded, stamped, etched, or similarly marked into their handles or escutcheon
area

Every circuit breaker
having an interrupting rating other than ___ amperes shall have its
interrupting rating shown on the circuit breaker

Circuit breakers used
as switches in 120-volt and 277-volt fluorescent lighting circuits shall be
listed and shall be marked ___ or ___

A two-pole circuit
breaker shall not be used for protecting a 3-phase, corner-grounded delta
circuit unless the circuit breaker is marked ___ to indicate such suitability

An intentionally
constructed, permanent, low-impedance electrically conductive path designed and
intended to carry current underground-fault conditions from the point of a
ground fault on a wiring system to the electrical supply source and that
facilitates the operation of the overcurrent protective device or ground fault
detectors on high-impedance grounded systems

An unintentional, electrically conducting
connection between an ungrounded conductor of an electrical circuit and the
normally non–current-carrying conductors, metallic enclosures, metallic
raceways, metallic equipment, or earth

An electrically conductive path from the point of a ground fault on a wiring system through normally non-current carrying conductors, equipment, or the earth to the electrical supply source.

Where more than one
separately derived system is installed, it shall be permissible to connect a
tap from each separately derived system to a common grounding electrode
conductor. Each tap conductor shall connect the grounded conductor of the separately
derived system to the common grounding electrode conductor. The common
grounding electrode conductor shall not be smaller than ___ copper or ___ aluminum

A metal underground water pipe in direct
contact with the earth for ___ mm or more (including any metal well casing
effectively bonded to the pipe) and electrically continuous (or made
electrically continuous by bonding around insulating joints or insulating pipe)
to the points of connection of the grounding electrode conductor and the
bonding conductors

Interior metal water
piping located more than ____ mm from the point of entrance to the building
shall not be used as a part of the grounding electrode system or as a conductor
to interconnect electrodes that are part of the grounding electrode system

An electrode encased
by at least 50 mm of concrete, located within and near the bottom of a concrete
foundation or footing that is in direct contact with the earth, consisting of
at least 6 000 mm of one or more bare or zinc galvanized or other electrically
conductive coated steel reinforcing bars or rods of not less than __ mm in
diameter, or consisting of at least 6 000 mm of bare copper conductor not
smaller than ___

A ground ring encircling the building or
structure, in direct contact with the earth, consisting of at least 6 000 mm of
bare copper conductor not smaller than ___ 
shall be used as a grounding electrode

Rod and pipe electrodes shall not be less than
___ mm in length.

Electrodes of pipe or
conduit shall not be smaller than __mm and, where of iron or steel, shall have
the outer surface galvanized or otherwise metal-coated for corrosion protection

Electrodes of rods of
iron or steel shall be at least __ mm in diameter. Stainless steel rods less
than __ mm in diameter, nonferrous rods, or their equivalent shall be listed
and shall not be less than __mm in diameter

Each plate electrode shall expose not less
than ____  of surface to exterior
soil

Electrodes of iron or
steel plates shall be at least __ mm in thickness.

Electrodes of
nonferrous metal shall be at least ___ mm in thickness

Identify the 2 types
of electrodes that are not permitted as grounding electrodes

Where more than one
of the rod, pipe and plate  type
electrodes of  are used, each electrode
of one grounding system (including that used for air terminals) shall not be
less than ___ mm from any other electrode of another grounding system

Where the
supplemental electrode is a rod, pipe, or plate electrode, that portion of the
bonding jumper that is the sole connection to the supplemental grounding
electrode shall not be required to be larger than ___ copper wire or ___
aluminum wire

The ground ring and
plate electrodes shall be buried at a depth below the earth’s surface of not
less than ___ mm

Rod and pipe electrodes shall be
permitted to be buried in a trench that is at least ___ mm deep.

The grounding electrode conductor shall be of
___, ___, or ___.

Where used outside,
aluminum or copper-clad aluminum grounding conductors shall not be terminated
within ___ mm of the earth

A ___ or larger
copper or aluminum grounding electrode conductor shall be protected where
exposed to physical damage

A __ mm² grounding
electrode conductor that is free from exposure to physical damage shall be
permitted to be run along the surface of the building construction without
metal covering or protection where it is securely fastened to the construction

Bonding jumper(s)
from grounding electrode(s) and grounding electrode conductor(s) shall be
permitted to be connected to an aluminum or copper busbar not less than ___ mm ×
___ mm

A metal elbow that is installed
in an underground installation of rigid non-metallic conduit and is isolated
from possible contact by a minimum cover of ___ mm to any part of the elbow
shall not be required to be grounded

The equipment bonding
jumper shall be permitted to be installed inside or outside of a raceway or
enclosure. Where installed on the outside, the length of the equipment bonding
jumper shall not exceed ___ mm and shall be routed with the raceway or
enclosure

If the terminal for
the grounding conductor is not visible, the conductor entrance hole shall be
marked with the word ___ or ___, the letters ___ or ___

A 2-wire, dc system
supplying premises wiring and operating at greater than ___ volts but not
greater than ___ volts shall be grounded

Mats of insulating
rubber or other suitable floor insulation shall be provided for the operator
where the voltage to ground exceeds ___ volts

The grounding
conductor for secondary circuits of instrument transformers and for instrument
cases shall not be smaller than  ___ copper or ___ aluminum

minimum insulation
level for neutral conductors of solidly grounded systems shall be ___ volts

The neutral conductor
shall be of sufficient ampacity for the load imposed on the conductor but not
less than ___ percent of the ampacity of the phase conductors for circuits 1kv
or over

Exception: In industrial and commercial premises under engineering
supervision, it shall be permissible to size the ampacity of the neutral
conductor to not less than ___ percent of the ampacity of the phase conductor

At least one
grounding electrode shall be installed and connected to the multi-grounded
neutral circuit conductor every ___ m

The voltage developed
between the portable or mobile equipment frame and ground by the flow of
maximum ground-fault current shall not exceed ___ volts

The grounding
electrode to which the portable or mobile equipment system neutral impedance is
connected shall be isolated from and separated in the ground by at least ____
mm from any other system or equipment grounding electrode, and there shall be
no direct connection between the grounding electrodes, such as buried pipe and
fence, and so forth

A protective device
for limiting surge voltages by discharging or bypassing surge current, and it
also prevents continued flow of follow current while remaining capable of
repeating these functions

Where surge arresters
are installed on a circuit of less than ___ volts, the rating of the surge
arrester shall be equal to or greater than the maximum continuous
phase-to-ground power frequency voltage available at the point of application

The rating of a
silicon carbide-type surge arrester shall be not less than ___ percent of the
maximum continuous phase-to-ground voltage available at the point of
application

Line and ground
connecting conductors shall not be smaller than ___ copper or
___ aluminium, for surge arresters installed on the load side services of less than 1000 Volts

For circuits of 1 kV and over, the
conductor between the surge arrester and the line and the surge arrester and
the grounding connection shall not be smaller than ___ copper or aluminum

For multigrounded
neutral primary systems, the spark gap or listed device shall have a __-Hz
breakdown of not more than 3 kV, and there shall be at least one other ground
on the grounded conductor of the secondary that is not less than ___ mm
distant from the surge arrester grounding electrode

A protective device
for limiting transient voltages by diverting or limiting surge current; it also
prevents continued flow of follow current while remaining capable of repeating
these functions

A TVSS shall be a
___ device

TVSS line and ground
connecting conductors shall not be smaller than ___ copper or
___ aluminum

_____ is a complete system of air terminals, conductors, ground
terminals, interconnecting conductors, arresters, and other connectors or
fittings required to complete the system

_____ are generic terms for component parts.