I just want to be sure in my computation. The national electrical code provides that, "for each single receptacle shall be considered at no less than 180 watts rating". For me its mean that each convenience outlet is considered to have a maximum load of not less than 180 watts per plug or gang.

If I have 6 convenience receptacles, considering that the there are two plug per outlet, the total number of plug will be: 6 outlets x 2 plug = 12 pieces

The total estimated Load: 12 x 180 watts per outlet = 2,160 watts

The maximum Expected Current Load: 2,160 watts / 230 watts = 9.39 amperes.

In my computation I am right or not ,if not could give some explanation.