Solutions
? and ? are critically important to jobsite safety.
a. Correct Answer Awareness / common sense
? are devices that interrupt the flow of electricity within as little
as 1/40 of a second to prevent electrocution. Correct Answer
Ground-fault circuit interrupters
? associated with the flow of current in a conductor is one of the
most significant factors to be considered in designing electrical
systems. The conductor's rating is dependent upon its type of ? .
Correct Answer Heat / electrical insulation
? is a keen sense of what to do or say in order to maintain good
relations with others or avoid offense. Correct Answer tact
A "plumb 30" or a "plumb 45" bender will reliably produce an
approximate 30°- or 45°-bend when the conduit is horizontal
and the handle is pulled up so that the handle is vertical or
plumb. Correct Answer True
Note: There are too many variables to rely solely upon the
position of the bender handle to determine the angle of bend.
Each bender should be checked initially to verify the accuracy of
the bender markings and the take-up value.
A back-to-back 90° bend has been fabricated in 3/4 " EMT to
connect a junction box and a disconnect switch. The tops of both
enclosures are at the same height. In laying out this bend, it is
, necessary to determine the distance between the connector on
the box and the connector on the switch. The right side of the
conduit connector (junction box) will be used to make the
measurement. Correct Answer False
Note: The mark will be on the left side of the connector at the
point where the back of the bend goes into the connector; "back-
to-back" measurements are taken to the outside of the bends, not
the inside.
A cable assembly that enters a fire resistive wall and exits the
opposite side of the wall is considered to be a ? penetration.
Correct Answer through
A coating of joint compound on the surface of a conductor,
prevents a(n) ? from reforming after the installation process.
Correct Answer oxide
A competent electrician is one who has ___ , __ , and a positive
___ for his or her trade. Correct Answer skill / knowledge /
attitude
A four-bend saddle uses standard offset multipliers. Correct
Answer True
A Journeyman is told to run a three-inch conduit across a room
and decides to use a channel-iron system. The apprentice
suggests that one-hole straps might be quicker. What might
happen? Correct Answer The Journeyman should explain the
reasoning behind his or her decision. The apprentice should