OPENBOOK EXAM #9

Where devices containing a disconnecting means are mounted out of reach, suitable means shall be provided to operate the disconnecting means from the floor. Which of the following is permitted?

• Devices cannot be mounted out of reach

• Ladders

• Sticks

• No methods are permitted

Tubing having cut threads and use as arms or stems on light fixtures may not be less than ___ inches wall thickness.

• 0.040

• 0.050

• 0.010

• 0.005

Ground-fault circuit interrupter shall be installed be in the branch circuit supplying underwater pool lighting fixtures operating at more than ___ volts.

• 12

• 15

• 24

• 50

Each transformer shall be provided with a nameplate giving the name of manufacturer; rated KV; frequency; primary and secondary voltage; impedance of transformers ___ KVA and larger

• 112.5

• 25

• 33

• 50

___ is defined as properly localizing a fault condition to restrict outages to the equipment affected, accomplished by choice of selective fault protective devices.

• Monitoring

• Coordination

• Choice selection

• Fault device

Two-wire DC circuits and AC circuits of two or more ungrounded conductors shall be permitted to be tapped from the ungrounded conductors of circuits having ___.

• A properly sized tap conductor

• Less than 50 volts   

• A balance neutral system

• A grounded neutral conductor

Application of demand factors to small appliance and laundry loads in dwelling are permitted in Table ___.

• 220-3

• 220-42

• 220-13

• 220-20

Conductors for festoon shall be of the ___ type.

      I.          Thermoplastic

    II.          Rubber covered

III. Shielded

• I only

• I or II only

• II or III only

• I, II, or III

Not more than one conductor shall be connected to the grounding electrode by a single clamp or fitting is ___.

• East bronze or brass

• Listed for multiple conductors

• 0.043” in thickness

• None of these

FCC cable can have individual branch circuits with a rating not exceeding ___ amperes

• 15

• 20

• 25

• 30