[RE-wrenches] Busbar rating with multiple main breakers

[William]

Eric:

Check which code version your AHJ is using. Earlier versions calculated solely on OCPD ratings. CA building codes are based on NEC 2008 for 11 more days, then 2011. 

William 


> On Dec 19, 2013, at 4:03 PM, "SunHarvest" <eric at harvesthesun.com> wrote:
> 
> Sounds like I may be misinterpreting something but I don't think so...
>  
> NFPA 70, 2014 NEC 705.12(D2)(3)(b) states, "The sum of 125% of the inverter(s) output circuit current and the rating of the overcurrent device protecting the busbar shall not exceed 120% of the ampacity of the busbar."
>  
> 
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