Originally Posted by
Wendell Swedberg
Okay, what did I not add in for the computation:
Wendell,
It's not what you didn't add in, it's what you didn't (apparently) read and apply.
From the 2006 IRC.
- E3602.9 Branch-circuit load for ranges and cooking appliances. It shall be permissible to calculate the branch-circuit load for one range in accordance with Table E3604.2(2). The branch-circuit load for one wall-mounted oven or one counter-mounted cooking unit shall be the nameplate rating of the appliance. The branch-circuit load for a counter-mounted cooking unit and not more than two wall-mounted ovens all supplied from a single branch circuit and located in the same room shall be calculated by adding the nameplate ratings of the individual appliances and treating the total as equivalent to one range.
- - E3602.9.1 Minimum branch circuit for ranges. Ranges with a rating of 8.75 kVA or more shall be supplied by a branch circuit having a minimum rating of 40 amperes.
Did you go to Table E3604.2(2)?
And read the footnotes applicable at the top?
Especially footnote 'a', which takes you to footnote 'd', which gives you the correction factor to apply (Demand Factor), which then gives you the answer (which also happens to be answer A ).