NCCER Electrical Test Preparation 99
complete solutions.
NCCER Electrical Test Preparation 99
complete solutions.
Article of the NEC covers grounding - ANSWER article 250
90 degree, explosion proof fitting - ANSWER GUAL
Dropout plate - ANSWER Metal plate with a curved surface for cable to follow as it passes from the tray
Common service voltages in the United States EXCEPT - ANSWER 372/575 3-PHASE, 4-WIRE
GFCI breaker - ANSWER Opens a circuit to prevent operation of an electrical device
What happens when one or more coils in a winding are grounded - ANSWER The motor will
automatically blow fuses
Total connected load for eight incandescent lighting fixtures, each 120-volts, with a 200-watt lamp -
ANSWER 13.3 amps
Must be grounded in a bussed gutter if used as the main service equipment - ANSWER Neutral busbar
When wall mounting cable tray, ensure that - ANSWER The building structure is strong enough to
support the tray system
Purpose of sealing cable ends when reels of cable are in storage - ANSWER To keep moisture from
creeping in
Outer covering on liquid-tight flexible metal conduit - ANSWER A moisture seal
, NCCER Electrical Test Preparation 99
complete solutions.
A good electrical connection should - ANSWER Be mechanically and electrically secure
Symbol normally used for duplex - ANSWER Circle with two parallel lines drawn through it
Disconnecting means are covered in - ANSWER NEC Section 110-22
In relation to switches, the term throw refers to - ANSWER Number of internal operations that a switch
can perform
A 3-phase, 4-wire, 480v service requires - ANSWER 3 current transformer(s)
Services conductors and equipment are covered in - ANSWER NEC Article 230
All receptacles installed on 25 amp and 20 amp branch circuits must be - ANSWER Grounding
receptacles
The circular mil is based on - ANSWER Cross-sectional area of the wire
A transformer with the primary of 400 turns and a secondary of 300 turns has a - ANSWER Step-down
turns ratio of 4:3
Termination class that provides a seal against external elements - ANSWER Class 1
Calculations in AC circuits unless otherwise noted - ANSWER Rms values
When the coil turns are increased - ANSWER Induced voltage is increased
complete solutions.
NCCER Electrical Test Preparation 99
complete solutions.
Article of the NEC covers grounding - ANSWER article 250
90 degree, explosion proof fitting - ANSWER GUAL
Dropout plate - ANSWER Metal plate with a curved surface for cable to follow as it passes from the tray
Common service voltages in the United States EXCEPT - ANSWER 372/575 3-PHASE, 4-WIRE
GFCI breaker - ANSWER Opens a circuit to prevent operation of an electrical device
What happens when one or more coils in a winding are grounded - ANSWER The motor will
automatically blow fuses
Total connected load for eight incandescent lighting fixtures, each 120-volts, with a 200-watt lamp -
ANSWER 13.3 amps
Must be grounded in a bussed gutter if used as the main service equipment - ANSWER Neutral busbar
When wall mounting cable tray, ensure that - ANSWER The building structure is strong enough to
support the tray system
Purpose of sealing cable ends when reels of cable are in storage - ANSWER To keep moisture from
creeping in
Outer covering on liquid-tight flexible metal conduit - ANSWER A moisture seal
, NCCER Electrical Test Preparation 99
complete solutions.
A good electrical connection should - ANSWER Be mechanically and electrically secure
Symbol normally used for duplex - ANSWER Circle with two parallel lines drawn through it
Disconnecting means are covered in - ANSWER NEC Section 110-22
In relation to switches, the term throw refers to - ANSWER Number of internal operations that a switch
can perform
A 3-phase, 4-wire, 480v service requires - ANSWER 3 current transformer(s)
Services conductors and equipment are covered in - ANSWER NEC Article 230
All receptacles installed on 25 amp and 20 amp branch circuits must be - ANSWER Grounding
receptacles
The circular mil is based on - ANSWER Cross-sectional area of the wire
A transformer with the primary of 400 turns and a secondary of 300 turns has a - ANSWER Step-down
turns ratio of 4:3
Termination class that provides a seal against external elements - ANSWER Class 1
Calculations in AC circuits unless otherwise noted - ANSWER Rms values
When the coil turns are increased - ANSWER Induced voltage is increased
