Texas Journeyman Exam CORRECT QUESTIONS & ANSWERS(RATED A)
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Module
Electrical journeyman
Institution
Electrical Journeyman
Resistance with 2 resistors - ANSWER (R1+R2)/(R1xR2)
Resistance with more than 2 resistors - ANSWER 1/{(1/r1)+(1/r2)+(1/r3)}
voltage drop single phase - ANSWER (2 x conductor length x I x kRating)/cmils
voltage drop 3 phase - ANSWER (1.732 x conductor length x I x kRating)/cmils
Motor branch circuit conductors - ANSWER FLC x 125% —> 310.15(B)(16)
Motor overcurrent protection (of branch circuit) - ANSWER FLC x %430.52—>240.6
Motor overload protection - ANSWER NP-FLC x %430.32(A)(1)—> 240.6(A)
Either 115% or 125%
Motor overload protection when device is not sufficient to start motor - ANSWER 140% or 130%
430.32; of 305
Motor overload protection rating - ANSWER Service factor 1.15+ or temp rose 40C - = 125%
All other motors = 115%
240.6
Motor disconnect sizing - ANSWER FLC x 115%
Motor over current protection (feeder circuit) - ANSWER FLC x %430.52 —> 240.6 size down
Over current protection sizes - ANSWER Table 240.6(A)
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