220.61(B)(1), 70% if 'all 4' appliances ??

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ToolHound

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220.61 Feeder or Service Neutral Load.

(A) Basic Calculation.
The feeder or service neutral load shall be the maximum unbalance of the load determined by this article. The maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor.

Exception: For 3-wire, 2-phase or 5-wire, 2-phase systems, the maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor multiplied by 140 percent.

(B) Permitted Reductions.

A service or feeder supplying the following loads shall be permitted to have an additional demand factor of 70 percent applied to the amount in 220.61(B)(1) or portion of the amount in 220.61(B)(2) determined by the basic calculation:


(1) A feeder or service supplying household electric ranges, wall-mounted ovens, counter-mounted cooking units, and electric dryers, where the maximum unbalanced load has been determined in accordance with Table 220.55 for ranges and Table 220.54 for dryers​
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This question concerns 220.61(B)(1) copied/quoted above.

In light of the wording within the (B)(1) subsection, to wit, ...ranges, ovens, cooking units, and dryers..., does the 70% demand factor apply ONLY if the feeder or service supplies appliances in ALL FOUR OF THOSE APPLIANCE CATAGORIES (i.e., ranges, ovens, cook units, dryers). Or does the 70% demand factor apply if even just only one of those four catagories of appliances is supplied ?
 
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dana1028

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San Francisco Bay area
ToolHound said:
This question concerns 220.61(B)(1) copied/quoted above.

In light of the wording within the (B)(1) subsection, to wit, ...ranges, ovens, cooking units, and dryers..., does the 70% demand factor apply ONLY if the feeder or service supplies appliances in ALL FOUR OF THOSE APPLIANCE CATAGORIES (i.e., ranges, ovens, cook units, dryers). Or does the 70% demand factor apply if even just only one of those four catagories of appliances is supplied ?
Click to expand...

The 70% applies to any one type of the appliances mentioned, or any combination of the four.
 
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