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21: Know and Understand
A service _____ typically includes a meter, a circuit breaker box, a main switch, a direct connection to ground, and rigid tubing, including a weatherproof entrance for conductors.
The enclosure that protects the circuit breakers and main electrical connections is known as the _____.
All of the neutral conductors in a breaker box are connected securely to the _____, which is also required to be bonded to a ground connection.
What are the three major ways in which copper wire conductors differ?
A flag of black electrical tape on a white conductor in a circuit indicates that the wire is being used as a(n) _____ conductor.
What are the center pieces removed from knockouts called?
Hardwired equipment is often placed on a(n) _____ circuit.
In a duplex receptacle, the hot conductor should always be connected to the _____-colored screws.
The conductor leading from a switch to the load is called a(n) _____, and it is hot only when the switch is in the
On
position.
Installing _____ switches between two three-way switches allows the location of an unlimited number of controls on a single circuit.
A wire nut that is filled with a dielectric gel and has an attached skirt-like gasket that seals around the connected wires is intended for use in _____ environments.
When forming a shepherd’s hook on the end of a conductor, in which direction should you wrap it around the screw terminal before tightening the screw?
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