Installing circuit breaker for new run

Old 11-21-07, 05:07 AM
Thread Starter
Join Date: Jul 2006
Location: USA
Posts: 174
Received 1 Vote on 1 Post
Installing circuit breaker for new run

I'm attempting to install a 15A circuit breaker for the first time - just want to make sure I got the steps before giving it a try. I have two main panels, each panel has 100A coming into it.

- I'm going to turn off the 100A breaker in the box I want to add to.
- Remove panel cover
- Punch hole in panel and run wire through and clamp it to panel
- Connect new wire to neutral bus and ground bus
- Connect hot wire to 15A breaker
- Put breaker in panel
- Turn on main breaker
- Turn on new breaker and test new circuit
- turn off main breaker
- put panel cover back on
Old 11-21-07, 05:26 AM
Group Moderator
Join Date: Oct 2004
Location: WI/MN
Posts: 20,167
Received 1,165 Votes on 1,123 Posts
You do have a permit for this, right?
Old 11-21-07, 05:27 AM
Join Date: Sep 2002
Location: welland ontario
Posts: 8,283
Received 442 Votes on 367 Posts
That sound correct.
Be aware turnign off the main breaekr in the panel does not kill ALL the power in the panel. The power cables coming into the main breaker are still live. If the breaker to kill the panel is not in the panel then this warning does not apply.
Old 11-21-07, 07:52 AM
Join Date: Dec 2003
Location: USA
Posts: 994
Received 0 Votes on 0 Posts
That's pretty much how it's done. But don't forget to label the circuit if you're adding one.

All the moderators here are professionals, hence the question about a permit. You don't say if you're adding a new circuit or just replacing a breaker. If it's a new circuit, I hope you got a permit. There's a lot more to properly adding a circuit than just what you asked about, and you did say this is your first time. If you're just replacing a breaker, I'm not sure you'd need a permit.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: