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Part IV covers optional feeder and service load calculationsExample Service Load CalculationsFor example, if a dwelling unit has a load of more than 100 amps, an optional calculation can be applied to it. 100 amps is the general minimum requirement, but this option provides a different way to do a calculation for larger service loads, which may result in a smaller size conductor, but not smaller than 100 amps. that apply to specific types of occupancies, including:Single-family dwellings (Sections 220.82 and 220.83) Multifamily dwellings (Section 220.84) Schools that have electric heat or air conditioning (Section 220.86) New restaurants (Section 220.88)
The demand factors and other methods of calculating loads used here are all based on vast experience, much of which was derived from information from utilities.
© Hughes Associates,Inc. 2012