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Demand
Loads for Household Electric Ranges, Wall-Mounted Ovens, Counter-Mounted
Cooking Units, and Other Household Cooking Appliances over 1 3/4 kW Rating
. (Column A to be used in all cases except as otherwise permitted in Note 3 below.)
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Number of Appliances
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Max. Demand
(see notes)
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Demand Factors (%)
(See note 3)
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COL. A
(Not over 12 Kw rating)
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COL. B
(Less than 3 1/2 Kw rating)
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COL. C
(3 1/2 Kw to 8 3/4 Kw rating)
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1
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8 kW
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80%
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80%
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2
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11 kW
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75%
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65%
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3
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14 kW
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70%
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55%
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4
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17 kW
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66%
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50%
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5
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20 kW
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62%
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45%
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6
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21 kW
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59%
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43%
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7
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22 kW
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56%
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40%
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8
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23 kW
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53%
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36%
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9
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24 kW
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51%
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35%
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10
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25 kW
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49%
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34%
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11
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26 kW
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47%
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32%
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12
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27 kW
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45%
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32%
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Ref:
Table 220-19.
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Note 1. Over 12 kW through 27 kW ranges all of same rating. For ranges
individually rated more than 12 kW but not more than 27 kW, the maximum demand
in Column A shall be increased 5 percent for each additional kW of rating or
major fraction thereof by which the rating of individual ranges exceeds 12
kW.
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Note 2. Over 8 3/4 kW through 27 kW ranges of unequal ratings. For
ranges individually rated more than 8 3/4 kW and of different ratings, but
none exceeding 27 kW, an average value of rating shall be computed by adding
together the ratings of all ranges to obtain the total connected load (using
12 kW for any range rated less than 12 kW) and dividing by the total number
of ranges; and then the maximum demand in Column A shall be increased 5 percent
for each kW or major fraction thereof by which this average value exceeds 12
kW.
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Note 3. Over 1 3/4 kW through 8 3/4 kW. In lieu of the method provided
in Column A, it shall be permissible to add the nameplate ratings of all household
cooking appliances rated more than 1 3/4 kW but not more than 8 3/4 kW and
multiply the sum by the demand factors specified in Column B or C for the given
number of appliances. Where the rating of cooking appliances falls under both
Column B and Column C, the demand factors for each column shall be applied
to the appliances for that column, and the results added together.
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Note 4. Branch-Circuit Load. It shall be permissible to compute the branch-circuit load for one range in accordance with Table 220-19. 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 computed by adding the nameplate rating of the individual appliances and treating this total as equivalent to one range.
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