Exam 9: Services and Electrical Equipment

Splices in wire-type grounding electrode conductors are acceptable only if by means of irreversible compression-type connectors (listed as grounding and bonding equipment) or by the ____.

Concrete, brick, or tile walls are recognized as ____.

Panelboards shall be mounted in cabinets, cutout boxes, or identified enclosures and shall be ____.

Main bonding jumpers and system bonding jumpers must be made of ____ or other corrosion-resistant material.

Wireways are ____ with hinged or removable covers used to house and protect electric wires and cables.

The ampere rating of any circuit breaker rated at ____ amperes or less, and 1000 volts or less, must be molded, stamped, etched, or similarly marked into the handle or escutcheon area.

Overhead service conductors, accessible only to pedestrian traffic, must have a minimum ____ vertical clearance above finished grade, sidewalks, platforms, or projections that will permit personal contact.

Voltage between overhead conductors does not exceed ____ volts.

The radius of the curve of the inner edge of any bend in service-entrance cable must be at least ____ times the diameter of the cable.

Service-entrance and overhead service conductors shall be arranged so that ____.

Conductor sizes are expressed in American Wire Gage (AWG) or in ____.

A one-family dwelling service disconnecting means must have a minimum rating of ____.

Fuses must be plainly marked (by printing on or a label attached to the fuse barrel), showing the following: (1) ampere rating, (2) voltage rating, (3) ____, (4) "current-limiting" where applicable, and (5) the name or trademark of the manufacturer.

Fuseholders for current-limiting fuses must not ____.

Cartridge fuses and fuseholders are classified according to ____.

Conductors must have a vertical clearance of at least ____ above the roof surface.

Panelboards include overcurrent devices as well as ____.

Underground service conductors are defined as the underground conductors between the service point and the ____ to the service-entrance conductors in a terminal box, meter, or other enclosure, inside or outside the building wall.

Although not stipulated in the NEC , some local jurisdictions have adopted ____ for service conductors.

Entrance cables must be supported within ____ of every raceway or enclosure connection.