Hey guys,
Quick question about conductor sizing for a single motor that is NOT stated to be continuous duty - is the 125% multiplier still necessary?
PPI Exam 1 Question 35 has a single 3-phase motor that is NOT stated to be continuous duty. I still used the full-load current from the Motor Tables (430.250), but since this was not stated to be a continuous-duty motor, I did not multiply the table FLC by 1.25. Apparently I got this question wrong.
But NEC 430.22 specifically has the 125% multiplier for a single motor used in a continuous-duty application. It doesn't mention anything about a non-continuous-duty motor...
So if a single motor is NOT stated to be continuous-duty, should I still just assume it is for continuous-duty and use the 125% multiplier regardless (for conductor sizing)?
Thanks for any input on this!
![PPI Exam 1 Q 35.jpg PPI Exam 1 Q 35.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11058-88a482692402dbaf0ba4be7f4a9a9df4.jpg)
![PPI Exam 1 S 35.jpg PPI Exam 1 S 35.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11059-af7f1e8a8ff520723db122170e2fa660.jpg)
![NEC 430.22.jpg NEC 430.22.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11060-87db14d67c456439ffc5c6a3373bbefc.jpg)
Quick question about conductor sizing for a single motor that is NOT stated to be continuous duty - is the 125% multiplier still necessary?
PPI Exam 1 Question 35 has a single 3-phase motor that is NOT stated to be continuous duty. I still used the full-load current from the Motor Tables (430.250), but since this was not stated to be a continuous-duty motor, I did not multiply the table FLC by 1.25. Apparently I got this question wrong.
But NEC 430.22 specifically has the 125% multiplier for a single motor used in a continuous-duty application. It doesn't mention anything about a non-continuous-duty motor...
So if a single motor is NOT stated to be continuous-duty, should I still just assume it is for continuous-duty and use the 125% multiplier regardless (for conductor sizing)?
Thanks for any input on this!
![PPI Exam 1 Q 35.jpg PPI Exam 1 Q 35.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11058-88a482692402dbaf0ba4be7f4a9a9df4.jpg)
![PPI Exam 1 S 35.jpg PPI Exam 1 S 35.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11059-af7f1e8a8ff520723db122170e2fa660.jpg)
![NEC 430.22.jpg NEC 430.22.jpg](https://cdn.imagearchive.com/engineerboards/data/attachments/11/11060-87db14d67c456439ffc5c6a3373bbefc.jpg)