Which NEC section covers an optional method for determining feeders to schools?

Section 220.86 of the National Electrical Code (NEC) specifically addresses the optional method for calculating feeder conductors for schools. This section provides guidelines and calculations specifically designed to accommodate the unique electrical demands of educational facilities, which can have varying occupancy levels and use patterns throughout the day. The methodology outlined in this section allows for more tailored solutions that can optimize the sizing of feeders based on the load characteristics typical in school environments.

By utilizing this optional method, designers and electricians can ensure that the electrical systems in schools are both efficient and capable of handling the required loads while adhering to NEC standards. This flexibility is important, as it acknowledges the diverse needs of different educational settings and allows for effective planning and implementation. Other sections mentioned do not focus on this application related to school feeders, thus confirming the relevance of Section 220.86 in this context.