Bgg321
Member
- Location
- Greenville, ky
We are installing a new feeder for a crane collector rail with a 800 amp breaker feeding four cranes. My question is what size cable should we feed this collector system with?
You're going to need much more information than that. Do you have a local engineer you can consult? Or the manufacturer of the system?
We are installing a new feeder for a crane collector rail with a 800 amp breaker feeding four cranes. My question is what size cable should we feed this collector system with?
Yes, we have already done a load calculation for the cranes that are on the runway, according to article 610. The feeder is only a 100 feet long. Looking at article 610.14a we can use 500 mcm thhn for this feeder. Do you feel that this is the right size cable.
I don't have much help for you - I've never done a crane feeder. But I am interested in learning.Yes. What this is about is that there is several engineers at the plant. Some feel that the cable should be sized according to 310,15 and others feel that 610.14 is correct. I think 610.14 is correct and was looking for an answer, at least some discussion.
... Sometimes there are reasons why a code minimum job, with the accompaning lack-luster performance and poor reliability, just isn't good enough.
ice
I understand that. But this plant has been here for 25 years with several feeders just like this one. It failed a couple weeks back and is now being replaced..
Yes my side is all you have heard. But, I was hoping someone here knew the code! I sure some of you do. But I am surprised that no one without me leading you through it would even try to answer my question. What a waste of time!
Good point. Except for Julius we are pretty useless. He did as you asked.
The rest of us didn't tell you what you want to hear. Nor did we all pitch in and do a couple of hours of research to advance your case.
I don't think I'll bother talking to me anymore.
ice
Yes my side is all you have heard. But, I was hoping someone here knew the code! I sure some of you do. But I am surprised that no one without me leading you through it would even try to answer my question. What a waste of time!