Return to the Electrical Wiring Forum | Post a Follow-Up

Cable Size for Subpanel

Posted by normanbest (My Page) on
Wed, May 30, 12 at 14:11

I am adding a 4 circuit subpanel right next to my main panel. The subpanel will have 2 20amp circuits and 2 15amp circuits. What size cable do I have to run from the main to the sub?

Follow-Up Postings:

RE: Cable Size for Subpanel

Depends on what you are feeding with the 20 and 15 amp circuits.

Myself, I would put in a 40 amp breaker with a #8 4 wire cable. It's called 3 wire with ground.
That's 2 hot 1 neutral and 1 ground.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here