MASTER OPENBOOK EXAM #1

For over 600v, the motor branch circuit conductors shall have an ampacity not less than ___.

• 175% of the monitor nameplate current

• 150% of the monitor nameplate current

• 140% of the full load current from the appropriate table in the NEC

• the current at which the monitor overload device is selected to trip

The ampacity of a single #12 (3.5mm²) fixture wire is ___ amps.

*(PEC2009 TABLE 4.2.1.5)

• 20

• 25

• 23

• 35

Embedded deicing units shall not exceed ___ watts per square foot of heating area.

• 120

• 15

• 16.5

• 33

A 20 amp branch circuit is installed to supply receptacles for stage set lighting. The receptacles connected to this circuit shall have a minimum rating of ___ amperes.

*(PEC2009 5.30.2.11)

• 15

• 20

• 25

• 15 or 20

Resistors and reactors rated over 600v shall be isolated by ___.

*(PEC2009 4.70.2.1 (b))

I. elevation                  II. enclosure                III. barrier tape

• I only

• II only

• I and II only

• II and III only

Exposed snow melting heating elements shall be secured on the heated surface by a ___ means.

• rigid

• approved

• listed

• stable

The minimum deep of oil over the power contacts in a oil immersion type switch for use in a Class I Division II location is ___ inches. (mm)

*(PEC2009 5.3.1 16 (b))

• 1 (25)

• 1 1/2 (38)

• 2 (50)

• 3 (75)

Each storage or instantaneous type water heater shall be equipped with a ___ to disconnect all ungrouped conductors and such means shall be installed to sense maximum water temperature and be either a trip free, manually reset type or have replaceable elements.

• thermostat

• disconnect

• relay

• temperature limiting means

For a wye- start delta-run connected motor the conductors between the controller and a 3hp, 3ø, 208v motor shall have an ampacity of at least ___% of the motor F.L.C.

• 150

• 115

• 125

• 58

Each patient bed location shall be supplied by at least ___ branch circuits, equally supplied by the emergency system and the normal system.

*(PEC2009 5.17.2.9 (a))

• two

• four

• six

• eight