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220.86 Schools
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The calculation of a feeder or service load for schools shall be permitted in accordance with Table 220.86 in lieu of Part III of this article where equipped with electric space-heating, air conditioning, or both. The connected load to which the demand factors of Table 220.86 apply shall include all of the interior and exterior lighting, power, water heating, cooking, other loads, and the larger of the air-conditioning load or space-heating load within the building or structure.
Feeders and service conductors whose calculated load is determined by this optional calculation shall be permitted to have the neutral load determined by 220.61. Where the building or structure load is calculated by this optional method, feeders within the building or structure shall have ampacity as permitted in Part III of this article; however, the ampacity of an individual feeder shall not be required to be larger than the ampacity for the entire building.
This section shall not apply to portable classroom buildings.
| Connected Load | Demand Factor (Percent) | |
|---|---|---|
| First 33 VA/m2 Plus, | (3 VA/ft2) at | 100 |
| Over 33 through 220 VA/m2 Plus, | (3 through 20 VA/ft2) at | 75 |
| Remainder over 220 VA/m2 | (20 VA/ft2) at | 25 |
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