Identifying OCPD Test Questions with Answers 100% Pass
For the purposes of using the arc flash PPE category method to current limiting range
select PPE, different types of OCPDs, such as MCCB, ICCBs,
and LVPCBs, are all considered to have the same 1.5 cycle
typical fault clearing time in the Informational Note to Table NFPA 70E informational Note to Table 130.7(C)(15)(a) has the
130.7(C)(15)(a). - ANSWER -False typical fault clearing time for insulated case circuit breakers as ?
- ANSWER -None of the above
For the purposes of using the arc flash PPE category method to
select PPE, different types of OCPDs, such as MCCB, ICCBs, This Circuit breaker has an energy reducing maintanance switch
and LVPCBs, are all considered to have the same 1.5 cycle function? - ANSWER -True
typical fault clearing time in the Informational Note to Table
130.7(C)(15)(a). - ANSWER -Long-time trip (L)
this circuit breaker has an energy reducing maintenance switch
function and a current pickup for it can be adjusted by the dials -
There are five different common overcurrent protection trip ANSWER -false
types that a circuit breaker may incorporate. Which type is
intended for all types of fault current conditions? In this case,
the circuit breaker opens as fast as it can, and the exact speed this circuit breaker has an energy reducing maintenance switch
depends on the design. This trip current pickup setting can be function and a current pickup for it can be adjusted by the dials -
fixed or adjustable. - ANSWER -Instantaneous trip (I) ANSWER -True
There are five different common overcurrent protection trip This circuit breakerr does not have aan energy reducing
types that a circuit breaker may incorporate. Which type is a maintanacee switch function. - ANSWER -False
newer feature intended to reduce the incident energy exposure
if an arcing fault incident occurs while a worker is working on
exposed energized conductors? Some are fixed with no Energy-reducing maintenance switching (ERMS) is an option to
adjustment in time-current characteristics, and others have include on larger ampere rated circuit breakers and fused
adjustable current pickup settings. - ANSWER -Energy- switches with the objective of ? the arcing fault time duration for
reducing maintenance switching trip (A) some range of arcing fault currents. - ANSWER -reducing
Under fault conditions, current-limiting fuses have the ability to When the energy-reducing maintenance switching (ERMS)
limit the current let-through to less than the available fault option is switched "on" or enabled, the loads on the circuit that
current and clear the fault current in 1/2 cycle or less. The the ERMS protects are in energy efficiency mode and energy
combination of decreased clearing times and reduced arcing
savings occur. - ANSWER -False
current can greatly reduce the incident energy when the arcing
current is within the current-limiting range. - ANSWER -
True Energy-reducing maintenance switching options can be included
with many new circuit breakers and are available to be retrofitted
to many existing installed circuit breakers. - ANSWER -
Type of OCPD shown - ANSWER -insulated case circuit True
breaker with low voltage power circuit breaker
The overcurrent protective devices utilized in panelboards are
Type of OCPD Shown - ANSWER -Current limiting fuse either LVPCBs or fuses/switches. - ANSWER -False
Type of OCPD Shown - ANSWER -Molded case curcuit This 480 VAC Wall mounted assembly with main MVVB and
breaker branch MCCB is available to 600 amps main and 125 Amps
branche. - ANSWER -Panelboard
NFPA 70E informational Note to Table 130.7(C)(15)(a) has the
typical fault clearing time for molded case circuit breakers as 3-
The assembly shown below is a panelboard? - ANSWER -
cycle with an instantaneous integral trip - ANSWER -False false
NFPA 70E informational Note to Table 130.7(C)(15)(a) has the The assembly shown below is a switchboard? -
typical fault clearing time for current-limiting fuses as ? . -
ANSWER -True
ANSWER -0.5 cycles when the fault current is within the
1/2
For the purposes of using the arc flash PPE category method to current limiting range
select PPE, different types of OCPDs, such as MCCB, ICCBs,
and LVPCBs, are all considered to have the same 1.5 cycle
typical fault clearing time in the Informational Note to Table NFPA 70E informational Note to Table 130.7(C)(15)(a) has the
130.7(C)(15)(a). - ANSWER -False typical fault clearing time for insulated case circuit breakers as ?
- ANSWER -None of the above
For the purposes of using the arc flash PPE category method to
select PPE, different types of OCPDs, such as MCCB, ICCBs, This Circuit breaker has an energy reducing maintanance switch
and LVPCBs, are all considered to have the same 1.5 cycle function? - ANSWER -True
typical fault clearing time in the Informational Note to Table
130.7(C)(15)(a). - ANSWER -Long-time trip (L)
this circuit breaker has an energy reducing maintenance switch
function and a current pickup for it can be adjusted by the dials -
There are five different common overcurrent protection trip ANSWER -false
types that a circuit breaker may incorporate. Which type is
intended for all types of fault current conditions? In this case,
the circuit breaker opens as fast as it can, and the exact speed this circuit breaker has an energy reducing maintenance switch
depends on the design. This trip current pickup setting can be function and a current pickup for it can be adjusted by the dials -
fixed or adjustable. - ANSWER -Instantaneous trip (I) ANSWER -True
There are five different common overcurrent protection trip This circuit breakerr does not have aan energy reducing
types that a circuit breaker may incorporate. Which type is a maintanacee switch function. - ANSWER -False
newer feature intended to reduce the incident energy exposure
if an arcing fault incident occurs while a worker is working on
exposed energized conductors? Some are fixed with no Energy-reducing maintenance switching (ERMS) is an option to
adjustment in time-current characteristics, and others have include on larger ampere rated circuit breakers and fused
adjustable current pickup settings. - ANSWER -Energy- switches with the objective of ? the arcing fault time duration for
reducing maintenance switching trip (A) some range of arcing fault currents. - ANSWER -reducing
Under fault conditions, current-limiting fuses have the ability to When the energy-reducing maintenance switching (ERMS)
limit the current let-through to less than the available fault option is switched "on" or enabled, the loads on the circuit that
current and clear the fault current in 1/2 cycle or less. The the ERMS protects are in energy efficiency mode and energy
combination of decreased clearing times and reduced arcing
savings occur. - ANSWER -False
current can greatly reduce the incident energy when the arcing
current is within the current-limiting range. - ANSWER -
True Energy-reducing maintenance switching options can be included
with many new circuit breakers and are available to be retrofitted
to many existing installed circuit breakers. - ANSWER -
Type of OCPD shown - ANSWER -insulated case circuit True
breaker with low voltage power circuit breaker
The overcurrent protective devices utilized in panelboards are
Type of OCPD Shown - ANSWER -Current limiting fuse either LVPCBs or fuses/switches. - ANSWER -False
Type of OCPD Shown - ANSWER -Molded case curcuit This 480 VAC Wall mounted assembly with main MVVB and
breaker branch MCCB is available to 600 amps main and 125 Amps
branche. - ANSWER -Panelboard
NFPA 70E informational Note to Table 130.7(C)(15)(a) has the
typical fault clearing time for molded case circuit breakers as 3-
The assembly shown below is a panelboard? - ANSWER -
cycle with an instantaneous integral trip - ANSWER -False false
NFPA 70E informational Note to Table 130.7(C)(15)(a) has the The assembly shown below is a switchboard? -
typical fault clearing time for current-limiting fuses as ? . -
ANSWER -True
ANSWER -0.5 cycles when the fault current is within the
1/2
