article 225 NEC 2017 Delgado

10

The point of attachment of overhead premises wiring to a building shall be in no case less than___ ft above finished grade

the calculated load to be supplied

a building disconnecting means that supplies only limited loads of a single branch circuit shall have a rating of not less than

30 amps

for installations consisting of not more than two 2 wire branch circuits, the building disconnecting means shall have a rating of not less than

18 inches

if a set of 120/240 overhead feeder conductors terminates at a through the roof raceway or approved support with not more than 6 ft of these conductors, 4' horizontally, passing over the roof overhang, the minimum clearance above the roof for these conductors is not less than _______

access to the disconnecting means

in a multiple occupancy building, each occupant shall have access to his or her own________

10-8

open individual conductors shall be no smaller than_____AWG copper for spans up to 50'in length and_____AWG for a longer span, unless supported by a messenger wire

True

outside wiring shall not be installed beneath openings through which materials may be moved, and shall not be installed where they will obstruct entrance to these buildings' openings

between

overhead feeder and/or branch circuit conductors shall not be attached to a mast where the connection is_____a weatherhead or the end of the conduit and a coupling where the coupling is located above the last point of securement to the building or other structure, or where the coupling is located above the building or other structure.

6

overhead feeder conductors installed over roofs shall have a vertical clearance or not less than____above the roof surface unless otherwise permitted by an exception

12

overhead feeder conductors shall have a minimum of ____ft vertical clearance over residential property and driveways, as well as those commercial areas not subject to truck traffic, where voltage does not exceed 300 volts to ground

listed

raceways on exteriors of buildings or other structures shall be arranged to drain and shall be______for use in wet locations

opened or closed

the disconnecting means for a building supplied by a feeder shall plainly indicate whether it is in the_____position

24 1/2

the minimum clearance for overhead feeder conductors that pass over track rails of railroads is______ft

side of building below the roof

the requirement for maintaining a 3' vertical clearance from the edge of the roof shall not apply to the final feeder conductor span where the conductors are attached to_____

grouped in one location

the two to six disconnects for a disconnecting means for a building supplied by a feeder shall be_______

True

the type of disconnecting means specified in 225.31 shall be comprised of a circuit breaker, molded case switch, general use switch, snap switch, or other approved means.

10ft

the vertical clearance of final spans of overhead conductors above or within_____ft measured horizontally of platforms, projections,or surfaces that will permit personal contact shall be maintained in accordance with 225.18

building

underground raceways entering a _____from outside shall be sealed

overhead conductor spans

vegetation such as trees shall not be used for support of _____

power failure

when the disconnecting means for a building supplied by a feeder is a power operable switch or circuit breaker, it shall be able to be opened by hand in the event of a_______

True

where a mast is used for overhead branch circuit or feeder conductor support, it shall have adequate strength or be supported by braces or guys to safely withstand the strain imposed by the conductors