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Thread: 15KV to AL

  1. #1
    Join Date
    Sep 2012
    Location
    NJ
    Posts
    2,149

    15KV to AL

    Have a lot of 1/c #4/0 15kv cable CU that they want us to VE to AL. How would I approach this to account for the correct AL size cable? Thanks.

  2. #2
    Join Date
    Dec 2008
    Posts
    527
    At first you have to state a few details:
    -current [normal, short-circuit]
    -cable route [for instance: underground, conduit, duct, RHO, ambient temperature]
    -how many cables per conduit or duct or tray or else.

  3. #3
    Join Date
    Jan 2016
    Location
    Earth
    Posts
    6,049
    wag
    you want the same cable type, insul, etc
    in Al with an ampacity equal to Cu 4/0 unless the Cu is oversized, then base on load i

    it may impact conduit size
    you could also look at C, L and R for equivilence
    Last edited by Ingenieur; 07-13-18 at 06:03 PM.

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