Q. What is the minimum ampacity required for household range and cooking appliance circuits?
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A. Branch-circuit conductors that supply household ranges, wall-mounted ovens, or counter-mounted cooking units must have an ampacity not less than the rating of the branch circuit, and not less than the maximum load to be served. For ranges of 8¾kW or more rating, the minimum branch-circuit ampere rating is 40A [210.19(A)(3