PSI Online Practice
Examination 2024
LATEST UPDATE 100%
VERIFIED
Live parts of generators shall not be exposed to accidental contact where accessible to unqualified
operated persons if their voltage is greater than which of the following?
1. 30 volts to ground
2. 40 volts to ground
3. 50 volts to ground
4. 60 volts to ground - ANSWER 445.14 Protection of Live Parts. Live parts of generators operated at
more than 50 volts to ground shall not be exposed to accidental contact where accessible to unqualified
persons.
Use of a higher class motor overload relay may preclude the need for which of the following?
1. a shunt
2. a separate controller circuit
3. a separate terminal enclosure
4. selection of a higher trip current - ANSWER
A panelboard for a mobile home shall be rated not less than which of the following?
1. 30 amperes
, 2. 40 amperes
3. 50 amperes
4. 60 amperes - ANSWER 550.11 (A) Disconnecting Means. A panelboard shall be rated not less than 50
amperes....
The storage batteries used as a source of power for emergency system shall be of suitable rating and
capacity to supply and maintain the total load for a minimum of how long?
1. 45 minutes
2. 60 minutes
3. 75 minutes
4. 90 minutes - ANSWER III 700.12 (A) Storage Battery 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 period of 1
1/2 hours. ( 4. 90 minutes)
Equipment grounding conductors of bare or insulated aluminum or copper-clad aluminum shall not be
terminated within how many inches of the earth?
1. 6 inches
2. 12 inches
3. 18 inches
4. 24 inches - ANSWER 250.64(A) Aluminum or Copper-Clad Aluminum Conductors shall not be
terminated within 450mm (18 inches) of the earth.
Unless otherwise provided, MC cables shall be secured at intervals not exceeding which of the following?
1. 6 feet
2. 8 feet
3. 10 feet
4. 12 feet - ANSWER 330.30(B) 6 feet
A minimum of how many threads needs to be engaged if machine screws are used to fasten bonding
jumpers?
, 1. 2
2. 3
3. 4
4. 5 - ANSWER 250.8(A)(5) Machine screw-type fasteners that engage not less than two threads or are
secured with a nut.
Disregarding exceptions, conductors used for direct burial applications shall be shielded if rated above
which of the following?
1. 600 volts
2. 1,000 volts
3. 1,200 volts
4. 2,000 volts - ANSWER 310.10 (F) Direct-Burial Conductors Cables rated above 2000 volts shall be
shielded.
What is the required width of the working space in front of electrical equipment with a 22-inch width?
1. 22 inches
2. 24 inches
3. 30 inches
4. 33 inches - ANSWER 110.26(A)(2) The width of the working space in front of the electrical equipment
shall be the width of the equipment or 30 inches, whichever is greatest.
Receptacles in residential units shall be installed such that no point measured horizontally along the
floor line of any wall space is more than how far from a receptacle outlet?
1. 6 feet
2. 8 feet
3. 10 feet
4. 12 feet - ANSWER 210.52(A)(1) Receptacles shall be installed such that no point measured horizontally
along the floor line of any wall space is more than 1.8m (6 ft.) from a receptacle outlet.
What is the minimum permitted branch circuit overcurrent protection for a 240-volt, 5,000-watt, 60-
gallon water heater?
Examination 2024
LATEST UPDATE 100%
VERIFIED
Live parts of generators shall not be exposed to accidental contact where accessible to unqualified
operated persons if their voltage is greater than which of the following?
1. 30 volts to ground
2. 40 volts to ground
3. 50 volts to ground
4. 60 volts to ground - ANSWER 445.14 Protection of Live Parts. Live parts of generators operated at
more than 50 volts to ground shall not be exposed to accidental contact where accessible to unqualified
persons.
Use of a higher class motor overload relay may preclude the need for which of the following?
1. a shunt
2. a separate controller circuit
3. a separate terminal enclosure
4. selection of a higher trip current - ANSWER
A panelboard for a mobile home shall be rated not less than which of the following?
1. 30 amperes
, 2. 40 amperes
3. 50 amperes
4. 60 amperes - ANSWER 550.11 (A) Disconnecting Means. A panelboard shall be rated not less than 50
amperes....
The storage batteries used as a source of power for emergency system shall be of suitable rating and
capacity to supply and maintain the total load for a minimum of how long?
1. 45 minutes
2. 60 minutes
3. 75 minutes
4. 90 minutes - ANSWER III 700.12 (A) Storage Battery 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 period of 1
1/2 hours. ( 4. 90 minutes)
Equipment grounding conductors of bare or insulated aluminum or copper-clad aluminum shall not be
terminated within how many inches of the earth?
1. 6 inches
2. 12 inches
3. 18 inches
4. 24 inches - ANSWER 250.64(A) Aluminum or Copper-Clad Aluminum Conductors shall not be
terminated within 450mm (18 inches) of the earth.
Unless otherwise provided, MC cables shall be secured at intervals not exceeding which of the following?
1. 6 feet
2. 8 feet
3. 10 feet
4. 12 feet - ANSWER 330.30(B) 6 feet
A minimum of how many threads needs to be engaged if machine screws are used to fasten bonding
jumpers?
, 1. 2
2. 3
3. 4
4. 5 - ANSWER 250.8(A)(5) Machine screw-type fasteners that engage not less than two threads or are
secured with a nut.
Disregarding exceptions, conductors used for direct burial applications shall be shielded if rated above
which of the following?
1. 600 volts
2. 1,000 volts
3. 1,200 volts
4. 2,000 volts - ANSWER 310.10 (F) Direct-Burial Conductors Cables rated above 2000 volts shall be
shielded.
What is the required width of the working space in front of electrical equipment with a 22-inch width?
1. 22 inches
2. 24 inches
3. 30 inches
4. 33 inches - ANSWER 110.26(A)(2) The width of the working space in front of the electrical equipment
shall be the width of the equipment or 30 inches, whichever is greatest.
Receptacles in residential units shall be installed such that no point measured horizontally along the
floor line of any wall space is more than how far from a receptacle outlet?
1. 6 feet
2. 8 feet
3. 10 feet
4. 12 feet - ANSWER 210.52(A)(1) Receptacles shall be installed such that no point measured horizontally
along the floor line of any wall space is more than 1.8m (6 ft.) from a receptacle outlet.
What is the minimum permitted branch circuit overcurrent protection for a 240-volt, 5,000-watt, 60-
gallon water heater?
