422.1 Worksheet
In a dwelling, a living room branch circuit with a 20-ampere rating can be loaded to a maximum of ___ amperes.
20
Which of the following is not a standard rating for a branch circuit supplying several loads?
25 amperes
A 50-ampere rated single receptacle may be installed on a ___-ampere individual branch circuit.
50
One single receptacle with a 20-ampere rating may be installed on a ___-ampere individual branch circuit. I. 15 II. 20
II only
A duplex receptacle with two circuits on the same yoke is permitted to have ___ as a means of disconnect. I. two single-pole circuit breakers without tie handles II. one double-pole circuit breaker III. two single-pole circuit breakers with tie handles
II or III only
All branch circuits that supply 125-volt, 15- and 20-ampere outlets installed in dwelling unit ___ shall be protected by an arc-fault circuit interrupter listed to provide protection of the entire branch circuit.
bedrooms
Two 20-ampere small appliance circuits ___ supply more than one kitchen of a dwelling.
cannot
Improper wiring or mishandling of multiwire branch circuits can cause ___. I. overloaded grounded conductors II. overvoltage of loads connected to the circuit
either I or II
Receptacles connected to a 20-amp residential branch circuit are to be rated ___. I. 15 amperes II. 20 amperes
either I or II
A branch circuit that supplies only one utilization equipment is a(n) ___ branch circuit.
individual
In nonmetallic sheathed cable, the equipment grounding conductor for 15-, 20-, and 30-ampere branch-circuits ___.
must be the same size as the insulated circuit conductors