[kumaichi]

Hi All,

New to the forum and have an electrical question. I'm turning my garage into a workshop and need to run some electrical circuits for some machines but I'm out of space in my panel. I've been doing some research and I found that you can free up space by using a duplex style breaker. I looked at the tag in the door of my breaker box and it doesn't say anything about which slots can accept duplex breakers. I've been looking on line and can't find any documentation either. Does anyone know if it's possible to install duplex breakers into a Cutler-Hammer BR3040B200 panel? And if it's possible which slots are capable of accepting the BR1515 or BR2020 breakers.

Thanks in advance for any assistance,

Craig

 

[Arrow3030]

There should be a line diagram of the bus bar on the inside of the door. If not, the sure way is to look at the bus bar by removing a breaker. If the bar plateaus, it can't take a duplex. If it has a valley it can. Either the top or bottom 10 spaces will have a valley.

 

[Jim Port]

The line diagram will clearly show the slots that allow tandems.

 

[kumaichi]

Thanks for the quick replies. I don't see anything on the door sticker related to duplex/tandem breakers, I've attached a photo in case I'm missing something. I also attached some pictures of the panel with a breaker removed, I'm not sure if there is a valley or not, I don't really have a frame of reference.

Thanks again for the help.

 

[rjniles]

The model number tells you you can use tandems. 3040 means 30 spaces, 40 circuits. So there are 10 spaces that will accept tandems.

 

[Jim Port]

Look on the label near the Danger labEl for the diagram. You will see some spots that show two connections.

 

[kumaichi]

Look on the label near the Danger labEl for the diagram. You will see some spots that show two connections.

This part of the diagram? I'm missing it aren't I ?

 

[Oso954]

Look at the bottom of your last photo. It shows the difference between the solid stab that will not accept the tandems or quads and the notched stab that will.

In your earlier photos, the visible stabs are the notched ones.

It should be the bottom 5 stabs (or bottom 10 slots for breakers) that accept the tandems or quad breakers.

 

[kumaichi]

:vs_bulb:Now I've got it, thanks for the clarification . You guys are AWESOME!!!

Craig