CU Bus Instead Of Splice

[mstrlucky74]

So I have an existing riser I'm intercepting( 4 sets of 4#500) and connect via pull box and new pipe/wire form dist. board. I've never seen, as the engineer/notes request as I've attached, to use a cooper bus/detail to connect the existing feeders to the new. Though you always used some sort of tap/splice block. So I assume one set of feeder terminate on lugs at the bottom of the bus and the others on the top? Thanks.

 

[petersonra]

I would think one would just buy something off the shelf rather than trying to make something. At least it is listed that way and not something home made.

 

[steve66]

To be honest, I don't see the word "bus" in the attached note. I only see "detail". I'm assuming the engineer wants you to provide a detail of the connections?

If the engineer does want a bussed connection, I think a "Cooper Bussed gutter" or something similar would be an off-the-shelf solution.

 

[petersonra]

To be honest, I don't see the word "bus" in the attached note. I only see "detail". I'm assuming the engineer wants you to provide a detail of the connections?

If the engineer does want a bussed connection, I think a "Cooper Bussed gutter" or something similar would be an off-the-shelf solution.

I did not even know such a thing existed. I will have to remember it in case I need something like it at some point down the road.

 

[mstrlucky74]

To be honest, I don't see the word "bus" in the attached note. I only see "detail". I'm assuming the engineer wants you to provide a detail of the connections?

If the engineer does want a bussed connection, I think a "Cooper Bussed gutter" or something similar would be an off-the-shelf solution.

Cooper detail in my mind means a copper bus bar.

 

[oldsparky52]

Cooper detail in my mind means a copper bus bar.

Don't let your mind cost you more money, ask for clarification of what they want. I agree with Steve, what you posted would not (in my mind) be calling for a bus.

 

[oldsparky52]

Cooper detail in my mind means a copper bus bar.

Your image says "Copper" detail but above you said "Cooper" detail. Which is accurate?

 

[mstrlucky74]

Your image says "Copper" detail but above you said "Cooper" detail. Which is accurate?

Cooper. it's a typo.

 

[JFletcher]

Cooper. it's a typo.

same as "Raiser", which is "riser".

Had to look up U.O.N.... my learning something new every day is done for today.

 

[steve66]

Cooper. it's a typo.

Mine was not a typo. Cooper (the company) makes a copper (material) bussed enclosure.

 

[infinity]

So I have an existing riser I'm intercepting( 4 sets of 4#500) and connect via pull box and new pipe/wire form dist. board. I've never seen, as the engineer/notes request as I've attached, to use a cooper bus/detail to connect the existing feeders to the new. Though you always used some sort of tap/splice block. So I assume one set of feeder terminate on lugs at the bottom of the bus and the others on the top? Thanks.

Basically it just a box with 4 sections of copper bus detail where you can attach the incoming and outgoing lugs. A big waste of money IMO when you could use an 8 port Polaris type connector.

 

[mstrlucky74]

Basically it just a box with 4 sections of copper bus detail where you can attach the incoming and outgoing lugs. A big waste of money IMO when you could use an 8 port Polaris type connector.

Thanks. Maybe we will get the job and submit for approval on tap connectors and maybe the engineer will mark the submittal REJECTED

 

[Joe Villani]

Basically it just a box with 4 sections of copper bus detail where you can attach the incoming and outgoing lugs. A big waste of money IMO when you could use an 8 port Polaris type connector.

They make a polaris type connector that's good for 1500 amps?

I always thought they were only good for the largest terminal (wire size) at 90 degrees C ???

 

[petersonra]

They make a polaris type connector that's good for 1500 amps?

I always thought they were only good for the largest terminal (wire size) at 90 degrees C ???

the ampacity is the same as the max number of the largest conductors you can fit in them AFAIK.

 

[dkidd]

the ampacity is the same as the max number of the largest conductors you can fit in them AFAIK.

But you have to stagger the inputs and outputs.

 

[steve66]

But you have to stagger the inputs and outputs.

Sometimes you don't have to do that. For example, if all the inputs are on the bottom, and all the outputs are on the top.

But you are correct in that you cannot put all the inputs on the right and outputs on the left.

 

[infinity]

I agree as long as you stagger them it's fine. In some people's mind the bus bar scenario is probably better.