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1The ends of headers shall have bearing of not less than 1-1/2 inch(es). Headers less than four feet wide shall be of either two pieces of _______ nominal lumber placed on edge or 4 inches lumber of equivalent cross-section.
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2For the ampacity of cables, rated 2,000 volts or less, in cable trays, the derating factors of the Notes to Ampacity Tables of 0 to 2,000 volts shall apply only to multiconductor cables with more than ____ current-carrying conductors.
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3A ground fault circuit interrupter (GFCI or GFI) is required by Cal/OSHA on all 120 volt, AC, single phase, 15-20 ampere receptacles on construction sites when the receptacles are used by workers and the receptacles are not part of which type of wiring of the structure?
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4If excavating a trench 25 meters x 14 meters x 5 ft., how many cu. yds. are there?(NOTE: There are 3.218 ft. in one meter. The answer is arrived at by the following equation:(25 x 3.218) x (14 x 3.218) x 5 divided by 27 = 697.7 = 672 cu. yds.)
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5Material for draftstopping shall be not less than ____ inch thick gypsum board, 3/8 inch thick plywood, or other approved materials.
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6Domestic gas piping shall stand a pressure of not less than __________ lbs. per sq. in. gauge pressure or may be tested at a pressure of at least _________ inches of mercury.
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7At least two anchor bolts, spaced not more than ______ apart must be used for each piece of mudsill and there must be an anchor bolt within ______ of each end of each piece.
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8The size of the studs on the first floor of a three story building shall be either _______ or _______ spaced not more than 16 inches on center.
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9On circuits over 600 volts, nominal, where energized live parts are exposed, the minimum clear work space shall not be less than ____ high.
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10Service drop conductors, when not in excess of 600 volts, shall have which of the following minimum clearances from the ground above areas accessible to pedestrians only, such as sidewalks and finished grades?
