600AMP MAIN SERVICE FOR SINGLE FAMILY DWELLING

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Tom Drake

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West Palm Beach, FL
I have a 600amp meter feeding a 600amp SE rated ATS which then drops down to a gutter outside the garage. Then taps off to four 200amp panels with main breakers just inside garage. One panel has a feed through 200amp block to other side of house feeding a 200amp sub-panel. One panel has a 125amp breaker feeding pool panel (plus other branch circuits. I am being told that I can't feed additional panels off these 200am main panels. Is that correct?
 
I can certainly see the AHJ unhappy with a 200 amp panel feeding a 200 amp sub-panel. The possibility of overload in the future is a concern.
That being said, it doesn't seem to be against code. You may satisfy the AHJ by providing a load calculation.
 
Danielt said:
I can certainly see the AHJ unhappy with a 200 amp panel feeding a 200 amp sub-panel. The possibility of overload in the future is a concern.
That being said, it doesn't seem to be against code. You may satisfy the AHJ by providing a load calculation.
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That is done all the time in commercial and industrial. As long as the load calcs are sufficient for the ocp, totally legal.
 
Danielt said:
I can certainly see the AHJ unhappy with a 200 amp panel feeding a 200 amp sub-panel. The possibility of overload in the future is a concern.
That being said, it doesn't seem to be against code. You may satisfy the AHJ by providing a load calculation.
Click to expand...
I originally had a feed through panel or disconnect there. Could not get one. So went with this method. I wasn't sure they were going with generator. So I planned coming straight off meter and gutter (no 600amp main. This way I had all my disconnects grouped. Thanks for the input!
 
infinity said:
Doesn't sound correct. Who is saying this and what is the reason given?
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Tap Rules - My job foreman.
I originally had a feed through panel or disconnect there. Could not get one. So went with this method. I wasn't sure they were going with generator. So I planned coming straight off meter and gutter (no 600amp main. This way I had all my disconnects grouped. Thanks for the input!
 
Tom Drake said:
Tap Rules - My job foreman.
I originally had a feed through panel or disconnect there. Could not get one. So went with this method. I wasn't sure they were going with generator. So I planned coming straight off meter and gutter (no 600amp main. This way I had all my disconnects grouped. Thanks for the input!
Click to expand...
Based on your description in you post you now have a single 600 amp service disconnect so, yes, the conductors to the 4 200 amp main breaker panels are feeders and tap rules apply. But it sounds like you do comply with the tap rules.
 
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