electrical cable sizing for 3 phase
electrical cable sizing for 3 phase
(OP)
anyone have the formula to select the cable size for a 3 phase line.
info i have
3 phase 460v
3 - motors... 8.9A, 8.9A, 13.2A
1 way distance of 2480'
info i have
3 phase 460v
3 - motors... 8.9A, 8.9A, 13.2A
1 way distance of 2480'






RE: electrical cable sizing for 3 phase
Also half a mile long 480V circuit is a bad idea, but that was not your question.
RE: electrical cable sizing for 3 phase
RE: electrical cable sizing for 3 phase
Also, motor starting might become an issue. I would recommend modeling your circuit in either ETAP, SKM, or EasyPower to determine the best design.
RE: electrical cable sizing for 3 phase
It is just too long a circuit at that voltage. You will see when you do the calc. I am not saying it won't work.
If you are really designing something you need to make an effort to learn some basics. This site is not here to teach basics to novices. There are schools for that purpose. This is a forum for "professionals" to bounce off ideas and benefit from each other's experience. Not to learn basics.
Search a little harder or buy/borrow basic electrical engineering book/hand book. Even try Ugly's handbook.
If you keep this attitude, it will not be long before your post disappears from this site!
RE: electrical cable sizing for 3 phase
Why is it a bad idea? High cost and poor performance. Consider transformers and a higher voltage.
Bill
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"Why not the best?"
Jimmy Carter