SACA (202) Motor Control Certification Exam | Study Guide & Practice Test
What is the purpose of grounding equipment? - (answer)To prevent connecting metal parts that aren't
meant to carry current from being charged.
When a metal part is not grounded, what could the operator risk. - (answer)The operator could risk
shock, or the voltage in the metal object discharging through them.
What is the purpose of the National Electrical Code? - (answer)The National Electrical Code creates
electrical system codes and laws to protect systems and operators.
What is the purpose of the National Electrical Manufacturer's Association? - (answer)To create laws and
codes on how to manage an electrical motor.
True or False: It is encouraged to work with one hand while working with an electrical system. -
(answer)True! Working with one hand reduces the risk of electrical shock and allows an operator to
disengage quickly.
Define Lockout/Tagout. - (answer)A lockout/tagout is an item used to prevent the powering or
energizing a system while a person works on it.
3-phase motors have alternators placed every: - (answer)120 degrees.
Define Wye-Configuration. - (answer)The windings of a motor is connected by a single winding: in the
middle. This leads to the Y-shaped windings.
Define Delta-Configuration. - (answer)The windings of a motors is connected end-to-end, leadinging to a
triangle-shaped windings.
Define a disconnect. - (answer)A disconnect is manual input that shuts off a system to prevent discharge
or shorts.
True or False: a fusible disconnect is not a safe protective device. - (answer)False! A fusible disconnect is
a very safe protective device, as it opens the circuit during a short.
, SACA (202) Motor Control Certification Exam | Study Guide & Practice Test
What is a circuit breaker? - (answer)A circuit breaker is a resetable system that can automatically open a
circuit manually, magnetically, or thermally.
True or False: A fuse is cheaper and simpler than a circuit breaker. - (answer)True! A fuse is easy to plug
in and cheap, but needs to be replaced after opened.
What is the rated full-load current? - (answer)The rated full-load current is the current level a motor is
able to steadily run at.
The overcurrent fuse must be what percentage of the full-load current? - (answer)The overcurrent fuse
must be 125% of the full-load current.
(Ex. 25A * 125% = 31.25A)
What is conductor ampacity? - (answer)Conductor ampacity is the maximum current a conductor can
carry.
What is a motor's Service Factor? - (answer)The service factor is the output voltage of a motor.
List the 5 types of motor control functions. - (answer)Start/stop systems, motor & control protection,
speed control, jogging, and reversing.
What is overload protection? - (answer)Overload protection prevents a circuit from overloading, usually
by opening the circuit when an overload could occur.
What is the difference between a manual and magnetic motor starter? - (answer)A manual starter
recieves a direct input from an operator, while a magnetic motor starter recieves a remote input.
Why do most facilities use a magnetic motor starter over a manual one? - (answer)A magnetic motor
starter protects the operator from discharges or intentional operation by allowing remote control.
What is the purpose of grounding equipment? - (answer)To prevent connecting metal parts that aren't
meant to carry current from being charged.
When a metal part is not grounded, what could the operator risk. - (answer)The operator could risk
shock, or the voltage in the metal object discharging through them.
What is the purpose of the National Electrical Code? - (answer)The National Electrical Code creates
electrical system codes and laws to protect systems and operators.
What is the purpose of the National Electrical Manufacturer's Association? - (answer)To create laws and
codes on how to manage an electrical motor.
True or False: It is encouraged to work with one hand while working with an electrical system. -
(answer)True! Working with one hand reduces the risk of electrical shock and allows an operator to
disengage quickly.
Define Lockout/Tagout. - (answer)A lockout/tagout is an item used to prevent the powering or
energizing a system while a person works on it.
3-phase motors have alternators placed every: - (answer)120 degrees.
Define Wye-Configuration. - (answer)The windings of a motor is connected by a single winding: in the
middle. This leads to the Y-shaped windings.
Define Delta-Configuration. - (answer)The windings of a motors is connected end-to-end, leadinging to a
triangle-shaped windings.
Define a disconnect. - (answer)A disconnect is manual input that shuts off a system to prevent discharge
or shorts.
True or False: a fusible disconnect is not a safe protective device. - (answer)False! A fusible disconnect is
a very safe protective device, as it opens the circuit during a short.
, SACA (202) Motor Control Certification Exam | Study Guide & Practice Test
What is a circuit breaker? - (answer)A circuit breaker is a resetable system that can automatically open a
circuit manually, magnetically, or thermally.
True or False: A fuse is cheaper and simpler than a circuit breaker. - (answer)True! A fuse is easy to plug
in and cheap, but needs to be replaced after opened.
What is the rated full-load current? - (answer)The rated full-load current is the current level a motor is
able to steadily run at.
The overcurrent fuse must be what percentage of the full-load current? - (answer)The overcurrent fuse
must be 125% of the full-load current.
(Ex. 25A * 125% = 31.25A)
What is conductor ampacity? - (answer)Conductor ampacity is the maximum current a conductor can
carry.
What is a motor's Service Factor? - (answer)The service factor is the output voltage of a motor.
List the 5 types of motor control functions. - (answer)Start/stop systems, motor & control protection,
speed control, jogging, and reversing.
What is overload protection? - (answer)Overload protection prevents a circuit from overloading, usually
by opening the circuit when an overload could occur.
What is the difference between a manual and magnetic motor starter? - (answer)A manual starter
recieves a direct input from an operator, while a magnetic motor starter recieves a remote input.
Why do most facilities use a magnetic motor starter over a manual one? - (answer)A magnetic motor
starter protects the operator from discharges or intentional operation by allowing remote control.
