Power that can be used on copper wire

Could you help me on the equivalent current of three phase alternating current having 400V , 530kW and the available cross-sectional area of a copper wire. Its length 350m for carrying this current.
asked 7/2/2012

1 Answer

To work out the current, you need the power factor (and efficiency if it is a motors, as your kW is the output power): 

Current = 530,000/(3x230xpower factor), at a power factor of 0.95 = 808 A

To understand the calculation, you can read the post: Three Phase Current - Simple Calculation 

The cable size depends on the installation method and what voltage drop you will accept.

You can use the sites cable sizing tool to work this out.

answered 7/4/2012 Steven McFadyen 232
Steven McFadyen

Your Answer

In order to provide an answer to this question, you must Login

I am flagging this question because...

10 inform moderator flags remaining

I am deleting this question because...

I am flagging this answer because...

10 inform moderator flags remaining

Flagging a Post

You have already flagged this post. Clicking "Remove Flag" below will remove your flag, thus reducing the count by one as well.

I am deleting this answer because...

Latest Questions:

  1. Cable AC Resistance calculation
  2. Induction Machine Types
  3. Zone Delimiters in distribution network
  4. Voltage level
  5. Lightning Protection calculation Free Software
  6. How many motors, or of what kind, do I need to get the output to be 5 Volts under load?
  7. Three winding transformer impedance
  8. Short Circuit Fault Current (comprehensive)

most popular notesMost Popular Notes:

newsletter logo

Our Newsletter

Receive updates on new posts by email
down arrow

Our website uses cookies so that we can provide a better experience.
To learn more about what cookies are and how to manage them visit AboutCookies.org