ANSI Cable Proection

[HamidEle]

I am from IEC world and currently working on ANSI project.
I have an argumment with my collegue regarding the sizing of the cable.

My point is, we should size the cable based on the actual available short circuit current. But he said we should size the cable based on the setting of the protective device, which is lower. What is the common practice here?

Thank you in advance.

 

[rseqc]

SIZING WITH THE SETTING OF PROTECTIVE DEVISE IS THE LOWER, THE COMMUN PTACTICE IS SIZING ACCORDING WITH THE FRAME OR MAXIMUM AMPS FROM PROTECTIVE DEVICES. (THE PROTECTIVE DEVICES CB'S FUSES RELAYS ETC. PROTECT TO CABLES

 

[PHILEC]

Please refer to the link below:

http://www.eng-tips.com/viewthread.cfm?qid=179324&page=1

Regards,

 

[davidbeach]

PHILEC, for future reference, when making a link to another thread in Eng-Tips, you only need to copy the thread info below the thread title at the top of the page; thus thread238-179324. Your link and this one both go to the same place, but hover your mouse over each and you will notice that this link provides a tool tip with the name of the thread and the forum.

 

[PHILEC]

Hi davidbeach, Thanks for the info. sorry just new to this site. Next time I'll do the same as yours.

Cheers