300A Aluminum MC Cable Feed

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mstrlucky74

Senior Member
Location
NJ
Need a little help. Need to feed (3) 300A 3P4W bottom troughtemp panels. From a 2000A board that is 350’ away. The panels are on the 6th,7th and floor stacked above each other. My questions:
Would you run one feeders and tap in each trough or threeseparate feeders?
What size feeder would you run( individual runs looks like#750) in the given whichever scenario you choose in question #1.
What size switch would you use given the scenario above.
http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet86
Thanks.
 

Strathead

Senior Member
Location
Ocala, Florida, USA
Occupation
Electrician/Estimator/Project Manager/Superintendent
Need a little help. Need to feed (3) 300A 3P4W bottom troughtemp panels. From a 2000A board that is 350’ away. The panels are on the 6th,7th and floor stacked above each other. My questions:
Would you run one feeders and tap in each trough or threeseparate feeders?
What size feeder would you run( individual runs looks like#750) in the given whichever scenario you choose in question #1.
What size switch would you use given the scenario above.
http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet86
Thanks.
Unless you know that the neutral is going to have a high non-linear load, I would not use the 750. I would use a 500 with a 1/0 bare to comply with upsizing for voltage drop. That size is available from Southwire, the cut sheet I have saved on my computer lists many more option than the one you provided.
 
Need a little help. Need to feed (3) 300A 3P4W bottom troughtemp panels. From a 2000A board that is 350’ away. The panels are on the 6th,7th and floor stacked above each other. My questions:
Would you run one feeders and tap in each trough or threeseparate feeders?
What size feeder would you run( individual runs looks like#750) in the given whichever scenario you choose in question #1.
What size switch would you use given the scenario above.
http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheet86
Thanks.

I would also use 500 for 300 amps. Might want to confirm availability before finalizing the design. I recently wanted to use that same cable but went with PVC and individual conductors due to availability and minimums
 
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