Journeyman Electrician Final Exam
Questions with Solutions
when an electrical circuit tested with ohm meter, a short circuit is indicated by a reading
of... - Answer-0
If the panel board rating is 100 amperes, what shall be the overcurrent device rating
located in panelboard? - Answer-NEC 408.36
the overcurrent device rating must not be greater than panel board rating in which is
located
for stationary small motors rated less than..., the branch circuit overcurrent device may
serve as a controller. - Answer-1/8 horsepower
what is the resistance of 80 watt light bulb rated at 120 volts? - Answer-180 ohms
what is the NEC article for Clarence on a service entry - Answer-230.24
voltage drop formula - Single phase - Answer-2 * K-factor * Amp * Length / Circular mils
or KCmils of the conductor used
voltage drop formula - 3-phase - Answer-1.732 * K-factor * Amp * Length / Circular mils
or KCmils of the conductor used
What is the K-factor for copper and aluminum? - Answer-Copper: 12.9
Aluminum : 21.2
How to find the K-factor - Answer-Chapter 9,table 8
Multiply resistance of conductor per foot by the Circular mils size of the conductor
Where do I find conductor properties - Answer-Chapter 9, table 8
Where do I find the Full load current for 3 phase, alternating current motor - Answer-
430. 250
Motor in a continuous duty application shall have a ampacity of not less then - Answer-
125%
Where do I find conductor size for its ampacity - Answer-Table 310. 15 (b) (16)
Where do I find standard fuse or breaker size in NEC? - Answer-240. 6
Questions with Solutions
when an electrical circuit tested with ohm meter, a short circuit is indicated by a reading
of... - Answer-0
If the panel board rating is 100 amperes, what shall be the overcurrent device rating
located in panelboard? - Answer-NEC 408.36
the overcurrent device rating must not be greater than panel board rating in which is
located
for stationary small motors rated less than..., the branch circuit overcurrent device may
serve as a controller. - Answer-1/8 horsepower
what is the resistance of 80 watt light bulb rated at 120 volts? - Answer-180 ohms
what is the NEC article for Clarence on a service entry - Answer-230.24
voltage drop formula - Single phase - Answer-2 * K-factor * Amp * Length / Circular mils
or KCmils of the conductor used
voltage drop formula - 3-phase - Answer-1.732 * K-factor * Amp * Length / Circular mils
or KCmils of the conductor used
What is the K-factor for copper and aluminum? - Answer-Copper: 12.9
Aluminum : 21.2
How to find the K-factor - Answer-Chapter 9,table 8
Multiply resistance of conductor per foot by the Circular mils size of the conductor
Where do I find conductor properties - Answer-Chapter 9, table 8
Where do I find the Full load current for 3 phase, alternating current motor - Answer-
430. 250
Motor in a continuous duty application shall have a ampacity of not less then - Answer-
125%
Where do I find conductor size for its ampacity - Answer-Table 310. 15 (b) (16)
Where do I find standard fuse or breaker size in NEC? - Answer-240. 6
