MASTER ELECTRICIAN ACTUAL EXAM TEST
BANK FULL SOLUTION WITH TESTED
QUESTIONS AND ANSWERS
●● Where a conductor is marked RHW-2 on the insulation what does the
"-2" represent?.
Answer: The conductor has a maximum operating temperate of 90
degrees C.
●● For a grounded electrical system supplied by a feeder or branch
circuit, the equipment grounding conductor shall be sized in accordance
with _____..
Answer: the overcurrent protective device
●● For lighting systems operating at 30-volts or less, the output circuits
of the power supply are to
be rated for NOT more than _____..
Answer: 25 amperes
●● Using the standard method of calculation, what is the demand, in
kW, on the ungrounded (line) service-entrance conductors of an
apartment complex that has thirty-five (35) electric ranges rated at 11.5
kW each?.
Answer: 50 kW
,●● Where a service riser is installed in a wet location and contains
THWN insulated conductors, the wiring method used _____..
Answer: is permitted to be electrical metallic tubing (EMT)
●● What is the MAXIMUM distance between supports for straight
horizontal runs of trade size 1½ in. threaded rigid metal conduit
(RMC)?.
Answer: 14 feet
●● Overcurrent protection of transformers, of 600 volts or less, is
required to be sized _____..
Answer: in accordance with Table 450.3(B)
●● A thermal barrier shall be required if the space between the resistors
and reactors, of 600 volts or less, and combustible material is LESS than
_____..
Answer: 12 inches
●● In movie theaters, all switches for controlling the emergency lighting
systems shall be located _____..
Answer: in the lobby
, ●● Where a 90 ampere, 240-volt, single-phase load is located 225 feet
from a panelboard and is supplied with size 3 AWG copper conductors,
determine the approximate voltage drop on the conductors. (K = 12.9).
Answer: 10 volts
●● Wiring methods associated with solar photovoltaic (PV) systems
shall not be installed within _____ of the roof decking or sheathing
except where directly below the roof surface covered by PV modules
and associated equipment..
Answer: 10 inches
●● All metallic switchgear rated for over 600 volts shall be provided
with a grounding busbar for the purpose of connecting the _____..
Answer: metallic shield of cables
●● Conductors tapped from a feeder and supplying the primary of a
transformer need not have overcurrent protection, where the length of
the tap conductors are not over 25 feet and have an ampacity of at
LEAST _____ of the rating of the overcurrent device protecting the
feeder conductors..
Answer: one-third
●● Electrical equipment such as switchboards, panelboards, industrial
control panels, and motor control centers, located in commercial and
industrial occupancies are required to be field marked to warn _____ of
potential electrical arc flash hazards..
BANK FULL SOLUTION WITH TESTED
QUESTIONS AND ANSWERS
●● Where a conductor is marked RHW-2 on the insulation what does the
"-2" represent?.
Answer: The conductor has a maximum operating temperate of 90
degrees C.
●● For a grounded electrical system supplied by a feeder or branch
circuit, the equipment grounding conductor shall be sized in accordance
with _____..
Answer: the overcurrent protective device
●● For lighting systems operating at 30-volts or less, the output circuits
of the power supply are to
be rated for NOT more than _____..
Answer: 25 amperes
●● Using the standard method of calculation, what is the demand, in
kW, on the ungrounded (line) service-entrance conductors of an
apartment complex that has thirty-five (35) electric ranges rated at 11.5
kW each?.
Answer: 50 kW
,●● Where a service riser is installed in a wet location and contains
THWN insulated conductors, the wiring method used _____..
Answer: is permitted to be electrical metallic tubing (EMT)
●● What is the MAXIMUM distance between supports for straight
horizontal runs of trade size 1½ in. threaded rigid metal conduit
(RMC)?.
Answer: 14 feet
●● Overcurrent protection of transformers, of 600 volts or less, is
required to be sized _____..
Answer: in accordance with Table 450.3(B)
●● A thermal barrier shall be required if the space between the resistors
and reactors, of 600 volts or less, and combustible material is LESS than
_____..
Answer: 12 inches
●● In movie theaters, all switches for controlling the emergency lighting
systems shall be located _____..
Answer: in the lobby
, ●● Where a 90 ampere, 240-volt, single-phase load is located 225 feet
from a panelboard and is supplied with size 3 AWG copper conductors,
determine the approximate voltage drop on the conductors. (K = 12.9).
Answer: 10 volts
●● Wiring methods associated with solar photovoltaic (PV) systems
shall not be installed within _____ of the roof decking or sheathing
except where directly below the roof surface covered by PV modules
and associated equipment..
Answer: 10 inches
●● All metallic switchgear rated for over 600 volts shall be provided
with a grounding busbar for the purpose of connecting the _____..
Answer: metallic shield of cables
●● Conductors tapped from a feeder and supplying the primary of a
transformer need not have overcurrent protection, where the length of
the tap conductors are not over 25 feet and have an ampacity of at
LEAST _____ of the rating of the overcurrent device protecting the
feeder conductors..
Answer: one-third
●● Electrical equipment such as switchboards, panelboards, industrial
control panels, and motor control centers, located in commercial and
industrial occupancies are required to be field marked to warn _____ of
potential electrical arc flash hazards..
