Electrical Equipment
  • Home
  • Categories
    • Electrical distribution
    • Electrical Safety
    • Electrical software
    • Energy Efficiency – building
    • Energy Efficiency – kvar
    • Energy Efficiency – lighting
    • Energy Efficiency – motors
    • Energy Efficiency – news
    • Energy Efficiency – solar
    • Engineering Web tips
    • IEC standard
    • Panel Building
    • Power quality
    • Others
  • Resources
    • Electrical Calculation Tools
    • Electrical Engineering Forum
    • LED lighting resources area
    • Load Shedding Guide
    • Newsletters, archives
  • About us
    • How to help Electrical Engineering Community
    • Make a Comment, write a Post
    • Special thanks
Electrical Equipment
  • Home
  • Categories
    • Electrical distribution
    • Electrical Safety
    • Electrical software
    • Energy Efficiency – building
    • Energy Efficiency – kvar
    • Energy Efficiency – lighting
    • Energy Efficiency – motors
    • Energy Efficiency – news
    • Energy Efficiency – solar
    • Engineering Web tips
    • IEC standard
    • Panel Building
    • Power quality
    • Others
  • Resources
    • Electrical Calculation Tools
    • Electrical Engineering Forum
    • LED lighting resources area
    • Load Shedding Guide
    • Newsletters, archives
  • About us
    • How to help Electrical Engineering Community
    • Make a Comment, write a Post
    • Special thanks

Re: cable size & material vs current capacity

Home › Electrical Engineering Forum › General Discussion › cable size & material vs current capacity › Re: cable size & material vs current capacity

2011/05/06 at 2:48 am #12059
erickench
Participant

Have you ever heard of this formula:

Resistance = K x L/A

 

The length L is in feet and the area A is in circular mils. K has two different values for copper and aluminum.

Copper K = 12.9

Aluminum K = 21.2

Copyright © 2026. Electrical Equipment.