NEC Article 230
When the service disconnecting means is a power operated switch or circuit breaker, it shall be able to be open by hand in the event of a _____.
power supply failure
Each service disconnecting means shall be suitable for _____.
the prevailing conditions
Service-drop conductors shall have _____.
Sufficient ampacity to carry the load and Adequate mechanical strength
Where exposed to the weather, raceways enclosing service-entrance conductors shall be _____ for use in wet locations and arranged to drain.
Approved or Listed
Underground copper service conductors shall not be smaller than _____ AWG copper.
8
Overhead service conductors or service equipment can be supported to hardwood trees.
False
The service shall be connected to the service disconnecting means by _____ or other approved means.
Pressure connectors or Clamps
Service-entrance conductors can be spliced or tapped by clamped or bolted connections at any time as long as _____.
The free ends of conductors ore covered with an insulation that is equivalent to that of the conductors or with an insulating device identified for the purpose. Wire connectors or other splicing means installed on conductors that are buried in the earth are listed for direct burial. No splice is made in a raceway.
Meter sockets supplied by and under the exclusive control of an electric utility shall not be required to be _____ in accordance with 230.66.
Listed
In a multiple-occupancy building, each occupant shall have access to the occupant's _____.
Service disconnecting means
Additional services shall be permitted for single building or other structure sufficiently large to make two or more services necessary if permitted by _____.
Special permission
The minimum clearance for overhead service conductors not exceeding 600 V that pass over commercial areas subject to truck traffic is _____ ft.
18
For installations consisting of not more than two 2-wire branch circuits, the service disconnecting means shall have a rating of not less than _____.
30A
Overhead service conductors installed over roofs shall have a vertical clearance of not less than _____ ft. above the roof surface, unless a lesser distance is permitted by an exception.
8
Individual meter socket enclosures shall not be considered service equipment but shall be _____ for the voltage and ampacity of the service.
Listed and rated
Overhead service conductors shall have a minimum of _____ vertical clearance from Final Grade over residential property in driveways, as well as over commercial areas not subject to truck traffic or the voltage does not exceed 300 volts to ground.
12
Underground service conductors that supply power to limited loads of a single branch circuit shall not be smaller than _____.
12 AWG Copper
Service heads on raceways or service-entrance cables and goose-necks in service-entrance cables shall be located _____ the point of attachment, unless impracticable.
Above
To prevent moisture from entering service equipment service-entrance conductors shall _____.
Be connected to service-drop conductors below the level of the service head and Have drip loos formed on the individuals service-entrance conductors
A building or structure shall be supplied by a maximum of _____ Service(s), unless specifically permitted otherwise.
One
The general requirements for each service drop, set of overhead service conductors, set of underground service conductors, or service lateral is that it shall supply _____ set(s) of service-entrance conductors.
Only one
The service disconnecting means shall plainly indicate whether it is in the _____ position.
Open or Close
The additions service disconnecting means for fire pumps, emergency systems, legally required standby, or optional standby services, shall be installed remote from the one to six service disconnection means for normal service to minimize the possibility of _____ interruption of supply.
Simultaneous
A one-family dwelling unit and its accessory structure(s) shall be permitted to have one set of service-entrance conductors run to each structure from a single service drop, set of overhead service conductors, set of underground service conductors, or service lateral.
True
A service disconnecting means shall not be installed in bathrooms.
True
The minimum point of attachment of overhead service conductors to a building shall not be less than _____ ft. above finished grade.
10
Service conductors installed as un-jacketed multi-conductor cable shall have a minimum clearance of _____ft. from windows that are designed to be opened, doors, porches, balconies, ladders, stairs, fire escapes, or similar locations.
3
The minimum service entrance conductor size shall have an ampacity not less than the maximum load to be served after the application of any _____ factors.
Adjustment or Correction
Additional service shall be permitted for different voltages, frequencies, or phases, or for different uses, such as for _____.
Different rate schedules
Wiring method permitted for service-entrance conductors include _____.
Rigid metal conduit, Electrical metallic tubing, and PVC conduit
Solar photo-voltaic systems, fuel cell systems, wind electric systems, energy storage systems, are interconnected electric power production sources are permitted to be connected to the supply side of the service disconnecting means.
True
Where a service raceway enters a building or structure from a(n) _____, it shall be sealed in accordance with 300.5 (G).
Underground distribution system
If a set of 120/240 V overhead service conductors terminate at a through-the-roof raceway or approved support, with less than 6 ft. of these conductors passing over the roof overhang, the minimum clearance above the roof for these service conductors shall be _____.
18 in.
Service conductors installed in overhead Mast on the outside surface of the building traveling through the eave, but not the wall, of that building are considered to be outside of the building.
True
Where a building or structure is supplied by more than one service, a permanent plaque or directory shall be installed at each service disconnect location denoting all other services supplying that building or structure and the area served by each.
True
There shall be no more than _____ disconnections installed for each service or for each set of service-entrance conductors as permitted in 230.2 and 230.40.
six
Where conduits are used as service masts, ______ hubs shall be for use with service-entrance equipment.
Approved
Conductors other than services conductors shall not be installed in the same _____ in which the service conductors are installed.
Service raceway or Service cable
Underground service-entrance conductors shall be protected against physical damage.
True
