QUESTIONS AND CORRECT ANSWERS
Overhead branch circuit and feeder conductors shall not be installed ___ openings through which
materials may be moved, such as openings in farm and commercial buildings, and shall not be
installed where they will obstruct entrance to these building openings. - CORRECT ANSWER
beneath
Live vegetation, such as trees, may support overhead conductor spans. - CORRECT ANSWER
False
If festoon lighting exceeds ___ feet, the conductors shall be supported by messenger wire. -
CORRECT ANSWER 40
Where buildings exceed 3 stories or 50 feet in height, overhead lines shall be arranged, where
practicable, so that a clear space (or zone) of at least ___ feet wide will be left either adjacent to the
buildings or beginning not over 8 feet from them to facilitate the raising of ladders when necessary for
fire fighting. - CORRECT ANSWER 6
Conductors on poles shall be separated by at least ___ where not placed on racks or brackets. -
CORRECT ANSWER 12 inches
An overhead feeder is to be installed to a residential garage. The conductors are insulated and have a
voltage of 120 volts to ground. This circuit does not pass over a sidewalk or driveway. What is the
minimum height above the ground that must be maintained? - CORRECT ANSWER 10ft
From a panelboard inside a business, a 120/240-volt, 10, 3-wire branch circuit is installed
underground to serve receptacles and lighting in a small, separate building. When the conduit arrives
at the separate building, it is permitted to be stubbed up into a ___ . - CORRECT ANSWER ?
Service disconnecting means shall not be located in ___ . - CORRECT ANSWER bathrooms
In general, a building or structure shall be supplied by only __ service(s). - CORRECT ANSWER
one