220.87 and 555.12

[charlie b]

A marina wants to increase the loading at some of the slips (i.e., provide two 30 amp receptacles per boat instead of the existing one per boat). Do you think we can apply the 30 day metering process described in 220.87 to obtain the "existing load"? My reading of 555.12 does not give me a clear answer to this question.

 

[jumper]

I am going to say no.

Unlike 220.40, which says you can use part III or IV, 555.12 seems specific to using part III and 220.87 is in part IV.