Best option for joining (6) 4/0 conductors

[Leespark57]

Split bolts won't work. Some type of a 6 way unitap connector maybe? These conductors are in a large cabinet (approx 48" x 36") so one thought was busbar (1/4" x 2") such as:

 

[Dennis Alwon]

Try this page https://www.hubbell.com/burndy/en/multiple-tap-connectors

 

[infinity]

Similar to Dennis' post we use these:

http://www.nsiindustries.com/catalo.../polaris™-black-insulated-connectors/ipld500-6b

 

[Besoeker]

Split bolts won't work. Some type of a 6 way unitap connector maybe? These conductors are in a large cabinet (approx 48" x 36") so one thought was busbar (1/4" x 2") such as:

Looks sound but is 1/4" x 2" good enough to handle the current?

 

[jumper]

Looks sound but is 1/4" x 2" good enough to handle the current?

I would have to search, but I am pretty sure that item is a listed grounding (earthing) bus.

I think OP was just posted it for visual purposes.

Edit: I just looked, he did use those dimensions so IDK.

 

[Dennis Alwon]

Does this help

250.30(6)(c) Connections. All tap connections to the common
grounding electrode conductor shall be made at an accessible
location by one of the following methods:
(1) A connector listed as grounding and bonding equipment.
(2) Listed connections to aluminum or copper busbars not
smaller than 6 mm thick × 50 mm wide (1∕4 in. thick × 2 in.
wide) and of sufficient length to accommodate the
number of terminations necessary for the installation. If
aluminum busbars are used, the installation shall also
comply with 250.64(A).
(3) The exothermic welding process.

 

[jumper]

Does this help

Yes, thought those numbers looked familiar.

I also did a quick calc, I get 500A.

Not sure if one could use that exact item if it is not for grounding though.

 

[Besoeker]

Yes, thought those numbers looked familiar.

I also did a quick calc, I get 500A.

I'd probably go with that which is why I asked the question. In the good old days we had 1000A per square inch as a rough rule of thumb. Of course it depends on the aspect ratio (height and thickness) spacing, free air, still air............

But the six conductors would be capable of carrying around 1200A

 

[jumper]

I'd probably go with that which is why I asked the question. In the good old days we had 1000A per square inch as a rough rule of thumb. Of course it depends on the aspect ratio (height and thickness) spacing, free air, still air............

But the six conductors would be capable of carrying around 1200A

I multiplied the cross section by 1000. Basically what you just described.

Wouldn't it be the amperage of 3 conductors since it is a splice?

 

[Leespark57]

Thanks for all of the replies. The current is under 400 amps (2 parallel in, 4 out). I had trouble finding the ones that Dennis and Infinity found. They will work perfectly.

Yes, the busbar I posted a picture of is most likely listed for grounding, but is what I pictured it looking like.