Exam(100% Accurate)
Rod-type grounding electrodes of stainless steel shall have a diameter of no less than which of the
following?
a) 3/8 inch
b) 1/2 inch
c) 5/8 inch
d 3/4 inch - ANSWERc) 5/8 inch
Information technology equipment shall be permitted to be connected to a branch circuit by a
power-supply cord with a macimum lenght of how many feet?
a) 6
b) 10
c) 12
d) 15 - ANSWERd) 15
What is the power of a 4-Ohm resistive load connected to a 120-volt power supply?
a) 1,200 watts
b) 2,400 watts
c) 3,600 watts
d) 4,800 watts - ANSWERc) 3,600 watts
Resistance-type heating elements in electric space in electric soace-heating equipment shall be
protected at not more than how many amperes?
a) 40 amperes
b) 50 amperes
c) 60 amperes
d) 75 amperes - ANSWERc) 60 amperes
,ENT shall not be
a) bent
b) grounded
c) reamed
d) threaded - ANSWERd) threaded
What part of bulk storage plat is classified as class 2, zone 2?
a) vents, discharging upwards
b) below grade storage tank equipment
c) pits and sums without mechanical ventilation
d) drainage ditches, separators, and impounding basins. - ANSWERd) drainage ditches, separators,
and impounding basins
In which application is the installation of UF cable permitted?
a) in theaters
b) in hoistways
c) in commercial garages
d) in photovoltaic systems - ANSWERd) in photovoltaic systems
For other than a totally enclosed switchboard or switchgear, what is the minimum amound of space
that shall be provided between the top of an unshielded shwitchboard or switchgear and any
combustible ceiling?
a) 18 inches
b) 24 inches
c) 30 inches
d) 36 inches - ANSWERd) 36 inches
The base of a 24-foot non-self-supporting ladder shall be placed approximately how far from the
vertical structure upon which is leaning?
a) 3 feet
b) 4 feet
c) 5 feet
, d) 6 feet - ANSWERd) 6 feet
The storage batteries used as a source of power for emergency systems shall be of suitable rating and
capacity to supply and maintain the total load for a minimum of how long?
a)45 minutes
b) 60 minutes
c) 75 minutes
d) 90 minutes - ANSWERd) 90 minutes
What clearance must be maintained when overhead spans of open conductors or open
multiconductors cables of not over 1000 volts pass over residential property?
a) 10 feet
b) 12 feet
c) 15 feet
d) 20 feet - ANSWERb) 12 feet
What is the maximum spacing for supports of 10 AWG copper conductors located in a vertical
raceway?
a) 50 feet
b) 60 feet
c) 80 feet
d) 100 feet - ANSWERd) 100 feet
Where are flat cable assemblies permitted to be installed?
a) in hostways
b) in exposed locations
c) on escalators and elevators
d) in 35 ampere branch circuits - ANSWERb) in exposed locations
If the branch circuit supplies a single non-motor-operated appliance, the rating of overcurrent
protection shall not exceed 20 amperes if the overcurrent protection rating is not marked and the
appliance is rated at
a) 12.2 amperes or less