Gutters & Feeders

[eager2learn]

I have three 4' gutters that i need to install on a wall that is going to be supplying all the feeders from there own individual raceway. I have 480 v conductors along with 120 v conductors that will be terminated and spliced in the gutter aswell as branch circuits that come from six different panels. Are we allowed to mix different voltages (feeders ) coming from different panles in the same gutter which could be considered the same raceway. Anything under 600 v is considered low voltage.

 

[peter d]

Yes, this is permissible, and in fact, is quite common when you have a mixed voltage electric room with a common trough above all the panels.

 

[infinity]

Keep in mind that 366.23(A) limits you to 30 current carrying conductors without ampacity correction. After that you'll need to derate your conductors.

 

[eager2learn]

How would I determine the size of the gutter that needs to be used ? Should I refer to 314.28 or where else should i look