Does inside panel board need to be ocp protected

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doneright

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I have installed an outside 200 amp panel, and run through conduit a 4/0 -4/0 4/0- 2/0 al feeder. the out side panel has feed through lugs on it, and a 200 amp main breaker. the inside panel has MLO and is rated for 200 amps. all circuits for the house derive from this panel, non from the out-side panel. Inspector said i need individual protection for the inside panel. my question is does the outside main breaker count for the ocp for the inside panel. Code references either for or against it would be appreciated.
 
Your inspector should provide you with a code reference for the violation, if there is one. In your case there isn't, as long as the inside and outside panels are in/on the same structure. This is a common installation and the inside MLO panel does not require a main since it's protected by the OCPD in the outside panel. You should ask him for a code reference.
 
Doneright
You can show him 408.36(A)
"Each lightiing and appliance branch circuit panelboard shall be individually protected on the supply side by not more than two main circuit breakers,"

On the supply side does not mean the circuit breaker has to be in the same enclosure.

Your setup is similar to having a distribution board in the basement of the building, supplying a MLO panel located elsewhere in another part of the building.
 
Make sure you're feeding the inside panel through the main breaker and not the feed-through lugs.
 
Just out of curiosity, how do you handle the requirement that there be a disconnecting means for the building? Does 225.1 apply (i.e., ". . . feeders run on . . . buildings. . . ")? How about 225.31? Can you take credit for the main breaker as the means of disconnecting all power to the building, if by doing so you are also disconnecting power to whatever is powered by the outside panel? Is it possible that the Inspector is thinking along these lines? :?:
 
Here we go with the ......if this or......if that.
Is your outside 200 amp main breaker panel also a 30/40 circuit panel?
With feed thru lugs that your using to supply a sub panel?
If this is the case, then your sub panel feeder conductors need their own OCP protection.
 
77401 said:
Here we go with the ......if this or......if that.
Is your outside 200 amp main breaker panel also a 30/40 circuit panel?
With feed thru lugs that your using to supply a sub panel?
If this is the case, then your sub panel feeder conductors need their own OCP protection.
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Wouldn't the feed through lugs be on the load side of the of the 200 amp main CB?
 
Trevor? That is what I call a feed thru lugs.
On the line side of the breaker would be a double lug.
With out the original posters replies we are only speculating.

So I'll speculate that its not a line side double lug or he would never ever of even posted the question.
 
77401 said:
Trevor? That is what I call a feed thru lugs.
On the line side of the breaker would be a double lug.
With out the original posters replies we are only speculating.

So I'll speculate that its not a line side double lug or he would never ever of even posted the question.
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The Panelboards that we install that have feed through lugs are on the load side of the MCB. Typically there will be a set of lugs on the bottom of the buss bars that allows you to feed through to an adjoining panelboard. So you're feeding through from one buss to another buss.
 
I agree with Trevor.

It would be most unusual for a panel with a main breaker to have lugs available that are not protected by that breaker.
 
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