Register to reply 
Conductors per phase 
Share this thread: 
#1
Mar1112, 01:59 AM

P: 4

How do you determine the number of conductors per phase?
From my understand, the full load amperage divided by the desired wire size's ampacity rounded up if there is a remainder. An example: If I have a 361 Full load Amp motor from the NEC table and I calculated the motor circuit conductor protection, which the specs of the motor 300 HP, 3 Phase, 60 Hz, 480V. 125 % x 361 Amps is 451 Amps. Which Amp would I chose to divide my desire wire? I would assume to use the 451 Amps for overload protection, but the calculations don't look right if I use 600MCM/kcmil wire. 


Register to reply 
Related Discussions  
Device that blocks waves of one phase, but transmits wave of opposite phase?  General Physics  13  
3 phase 4 wire conductors radiated electromagnetic interference?  Electrical Engineering  8  
Sum of Partial Pressures of Gas phase equals to total pressure of a 2 phase system?  Chemistry  5  
Sum of Partial Pressures of Gas phase equals to total pressure of a 2 phase system?  General Physics  0  
Phase, Phase Difference and Phase Shift  General Physics  6 