Main lug panels

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sparkync

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As long as I have a "Main Breaker" outside at the meter, isn't it alright to put a "Main lug" panel on the interior? Wonder if someone can give me the reference in the code for this? This has been my understanding all my electrical experience, but haven't traced it to the actual code reference. Thanks

Also, if running a 100 amp. 4 wire feeder to an inside panel, as long as I've got it fused correctly at the Mains, can't I use a 200 amp main breaker panel (if desired) for the inside? In other words the 100 amp breaker that will be protecting the feeder will trip (if needed) before the 200 amp will.
The 200 amp would only be serving as a disconnect, not as overcurrent protection. Thanks again
 
The second sentence of Article 408.36 has the answers to both questions. The answers are (1) yes it is alright, and (2) yes you can.
 
sparkync said:
As long as I have a "Main Breaker" outside at the meter, isn't it alright to put a "Main lug" panel on the interior? Wonder if someone can give me the reference in the code for this? This has been my understanding all my electrical experience, but haven't traced it to the actual code reference. Thanks
Click to expand...

408.36 Overcurrent Protection. In addition to the requirement
of 408.30, a panelboard shall be protected by an
overcurrent protective device having a rating not greater
than that of the panelboard. This overcurrent protective device
shall be located within or at any point on the supply
side of the panelboard.

Also, if running a 100 amp. 4 wire feeder to an inside panel, as long as I've got it fused correctly at the Mains, can't I use a 200 amp main breaker panel (if desired) for the inside? In other words the 100 amp breaker that will be protecting the feeder will trip (if needed) before the 200 amp will.
The 200 amp would only be serving as a disconnect, not as overcurrent protection. Thanks again
Click to expand...

Legal
 
AS long as the panel is going in the same building that the disconnect is on, if you are feeding another building then another disconnect will be required but can be a main breaker panel. 225.31 and .32
 
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hurk27 said:
AS long as the panel is going in the same building that the disconnect is on, if you are feeding another building then another disconnect will be required but can be a main breaker panel. 225.31 and .32
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And main breaker could still be higher (or lower) rating than the feeder to the separate building, overcurrent protection is provided by the feeder overcurrent device if it is the lower setting.
 
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