Siemans 400amp Main Breaker Panel

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hardworker

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The catalog number of this panel is Siemans P1A30MC400A 120/240 IP 3W.


At the bottom of the panel is a factory installed 200amp breaker. It controls a subpanel. The conductors for this 200amp breaker are connected on the right side of the breaker.

On the left of the breaker are what appears to be terminals to lug two additional conductors. These particular lugs are not controlled by the 200amp breaker, but are controlled by the main 400amp breaker.

Are these conductors suitable for supplying an additional 200 amp subpanel, that would have a main breaker?
 
The panel is full, including the factory installed 200amp breaker at the bottom of the board. That being said, the ampage usage is well under 175amp.

I need to install a 150amp subpanel. What is the solution?
 
hardworker said:
The panel is full, including the factory installed 200amp breaker at the bottom of the board. That being said, the ampage usage is well under 175amp.

I need to install a 150amp subpanel. What is the solution?
Click to expand...

I would say if you know the load on the 150A sub and it won't put you over the 200A main OCPD, you could use the feed through lugs to feed the sub panel. But the sub would have to be a 200a or larger. You could also move either a 2-P or (2) 1P circuits to the sub and use that space for a 2-P to feed the sub. You could then protect/feed the 150A sub with a smaller than 150A breaker.
 
The breakers for the Main Panel are type BLH and the maximum size availabile is 100amp. The 150amp subpanel is going to pull more than 100amp.

Are these feed through lugs you metion in addition to the 200amp factory installed breaker at the bottom of the panel? Keep in mind this is a 400amp panel.
 
hardworker said:
The panel is full, including the factory installed 200amp breaker at the bottom of the board. That being said, the ampage usage is well under 175amp.

I need to install a 150amp subpanel. What is the solution?
Click to expand...
Use the tap rule on the feed thru lugs???
 
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