question on 210.11 c 1-3

[celtic]

Do I keep the fraction when finding number of circuits? ex. min number of 15amp lighting circuits in 2000sqft dwelling? my answer comes to 3.3 circuits. I round this up to four circuits.

Yes?

That is what I would do.
Rounding DOWN the number of ckts would essentially have the effect of rounding UP the amperage on that circuit.