Terminating #600

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Assuming that you're not trying to buy this off the shelf it's typically up to the panel manufacturer to build the panel with the proper number and size of terminals for what the feeder consists of. Since this is a main circuit breaker they would choose the proper option for the breaker when building the panel.
 
infinity said:
Assuming that you're not trying to buy this off the shelf it's typically up to the panel manufacturer to build the panel with the proper number and size of terminals for what the feeder consists of. Since this is a main circuit breaker they would choose the proper option for the breaker when building the panel.
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Some offer your choice of what lugs you chose to land your wires in. At the very least you should know what it's coming with so you can plan accordingly.
 
qcroanoke said:
Some offer your choice of what lugs you chose to land your wires in. At the very least you should know what it's coming with so you can plan accordingly.
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We just send them the engineered drawing and let the panel/switchboard manufacturer figure it out. Doesn't make much sense for the contractor to run parallel 600's when they're building panel with a main breaker that only accepts 350's but it does happen. Since the OP's main is 600 amps I would guess that parallel 600 terminals shouldn't be a problem. We once had an issue with ATS's where they could not configure the terminals to match the engineered drawing so they had to come up with an alternative of adding auxiliary gutters to them.
 
infinity said:
Since this is a main circuit breaker they would choose the proper option for the breaker when building the panel.
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For the case of a panelboard with a main breaker, what options does the manufacturer have when you ask for a conductor combination where that breaker does not have an off-the-shelf choice of lugs that work? Will they provide bussing off the breaker to other lugs that work? I see that frequently in switchboards of course, but don't recall seeing it in a larger panel board, although my sample size of larger panel boards with main breakers is somewhat limited.
 
In addition to a problem with the lugs you may have a problem satisfying 312.6.... as mentioned,, run it by the manufacturer
I assume they are doing that for a voltage drop issue... you may end up reducing the conductors at termination.
 
Here's a 4 conductor terminal from what I believe to be a 1200 amp breaker. These can be removed and changed to different configurations.
4 Port Terminal.jpg
 
There's a whole world of stuff I've not seen but I have not encountered a 600 amp M/B panleboard where the breaker would accept a lug designed for (2) 600s per phase.
 
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