I think it is good information but use it with caution. For example the 12 device per circuit rule has an exception if you know the maximum load of the light you can install as many as possible given the total load is below 80% x 15amp.
-jeffrey815(Smartiecat);
2014-7-9(#8865999@0)
是,硬性规定是80%load。12 general purpose outlets and fixtures,the average load per outlet will not exceed 1 amp,so 12 of them is 12 amp in total which is 80%*15 amp. 尽管现在用LED能耗很少, 但射灯还是最好单独回路,就像丁丁说的,插座跳闸不会导致摸黑查问题。而插座应该算是general purpose吧。所以我还是比较认可一个回路上不超过12个插座的通常做法。
-laughoftenlovemuch(LiveWell);
2014-7-9{129}(#8866131@0)