The service, feeder and branch circuit load design requirements in NFPA 70, National Electrical Code® (NEC®) may need to be updated based on the increasing pace of technological innovation along the entire span of the electrical power chain.
Factors such as today’s energy codes are driving down the electrical load presented by end use equipment and thus load growth assumptions that justify “spare capacity” are being re-examined. In addition, larger than necessary transformers that supply power to service, feeder and branch circuits may expose unnecessary flash hazard to electricians working on live equipment.
Recently, a Phase 1 research study reviewed the literature on this topic and developed a data collection plan (see “Evaluation of Electrical Feeder and Branch Circuit Loading: Phase 1”), with an emphasis on general commercial (office) occupancies. This project addresses this proposed data collection plan.
To this end, the Research Foundation has issued an RFP for a project contractor for the “Electrical Circuit Data Collection” project.
The goal of this project is to implement a data collection plan to provide sufficient receptacle demand and load data for a variety of occupancies, to provide a technical basis for considering revisions to the service, feeder and branch circuit design requirements in the National Electrical Code®. The project will seek to provide the necessary data and analytics for the targeted spaces and occupancies addressed by this project, and also set a clear approach for future efforts addressing other occupancies.
This research project will be conducted under the auspices of the Research Foundation in accordance with Foundation policies and will be guided by a Project Technical Panel who will provide input to the project, review periodic reports of progress and research results, and review the final project report. The Research Foundation will engage a contractor with appropriate technical expertise to conduct the project.
You can find the RFP on the Foundation website. The deadline for proposals is March 27, 2019 at 5pm EST.