Unit 14 - Services, Feeders, Equipment

_________ to __________ circuit breakers are permitted as the overcurrent device providing overload protection for service equipment.

2, 6

A 3-pole circuit breaker or fusible switch shall be considered ___________ overcurrent devices.

3

Anything other than a totally enclosed switchboard requires a space not less than _______ feet between the top of the switchboard and switchgear and any combustible ceiling.

3

Where rear access is required to work on nonelectrical parts a the back of enclosed equipment, a minimum working space of ___________ inches is required.

30

By special permission, smaller working spaces are allowed where all exposed live parts are no greater than _______ V rms, 42 peak or 60V DC.

40

Article ________ contains installation and other requirements for generators.

445

The work space shall be clear and extend from the grade, floor or platform to a height of __________ feet or the height of the equipment, whichever is greater.

6.5

Equipment grounding conductors can be _______, covered, or insulated.

bare

Transformers with ventilation openings shall be installed so such openings are not ____________ by walls or other obstructions.

blocked

Required working space (can / cannot) be used for storage.

cannot

A busway's dead end shall be ___________.

closed

Unused openings for circuit breakers and switches shall be ___________ using identified closures or other approved means to provide protection substantially equivalent to the wall or enclosure.

closed

Metal panelboard cabinets and frames shall physically __________ each other and be connected to an equipment grounding conductor.

contact

All switchboards, switchgear, panelboards and motor control centers shall be located in _____________ and protected from damage.

dedicated spaces

Spare positions that contain unused overcurrent devices or switches shall be _________ accordingly.

described

Transformers shall have a _______________ either in sight of the transformer or in a remote location.

disconnecting means

Switchboards and switchgear having exposed live parts shall be located in permanently _______________, under competent supervision, and accessible only to _______________.

dry locations, qualified persons

One access means is permitted where the location provides a continuous and unobstructed __________.

exit

All panelboards shall have a rating not less than the minimum _______________ required for the load calculated.

feeder capacity

Where a main bonding jumper or a system bonding jumper is a screw only, the screw shall be identified with a __________ finish.

green

If a switch and fuse combination is used, the fuses shall be capable of interrupting any current __________ than the interrupting capacity of the switch when the ground-fault-protective system will not cause the switch to open.

higher

Every circuit and circuit modification shall be legibly ____________ as to its clear, evident and specific purpose or use.

identified

A dropped or suspended ceiling (is / is not ) a structural ceiling.

is not

Working space (is / is not) required behind assemblies.

is not

The service disconnect rating is considered to be the rating of the ____________ fuse that can be installed.

largest

Each switchboard, switchgear, or panelboard used as service equipment shall be provided with a(n) _________________.

main bonding jumper

Panelboards shall be durably _________ by the manufacturer with the voltage, current rating, minimum number of ac phases or dc buses for which they are designed.

marked

Service equipment at other than dwelling units shall be legibly ____________ in the field with the maximum available fault current.

marked

Reconditioned equipment shall be marked with the ___________ by which the organization doing the reconditioning can be identified.

name

A grounded conductor shall not be connected to normally ____________________ metal parts of equipment.

non current carrying

Generators other than cord-and-plug shall have _________ or more disconnecting means.

one

If a disconnecting means is required to be lockable, it shall be lockable in the _________ position.

open

All switchboards, switchgear, and panelboards supplied by a feeder in other than one or two family dwelling, shall be marked to indicate where the power ________________.

originates

Panelboard shall be provided with _______________ to prevent the installation of more overcurrent devices than that number for which the panelboard was designed.

physical means

All transformers and their vaults shall be ____________ to qualified personnel.

readily accessible

Reconditioned equipment shall be identified as ______________.

reconditioned

Meters that are installed in meter sockets (shall / shall not) be permitted to extend beyond the other equipment.

shall

Outdoor equipment shall be protected from accidental ____________ or leaking from piping systems.

spillage

The type of generator shall be ___________ for the installed location.

suitable

For vertically operated circuit-breaker handles, the __________ position means on.

up