Guide to NEC Essentials for Architects

The purpose of this guide is to provide architects with a summary of the requirements found in the National Electrical Code that have a direct impact on space planning and the architectural design of
buildings.

This guide will focus on the specific requirements of the following pieces of low voltage (1,000 volts or less) electrical distribution equipment:

• Panelboards.
• Switchboards.
• Dry-type transformers.
• Enclosed switches (aka “safety switches”).

Codes Used Throughout Guide

The information within this guide is based on the 2020 National Electrical Code (NEC). Many people do not realize it but the NEC is actually part of the National Fire Protection Association series of codes, specifically the NFPA 70-2020. The 2020 version is the most recent edition of this code.

It is important to note that previous versions of the NEC may have different requirements.  Additionally, while the NEC is adopted nationally, many local jurisdictions and power utility  companies have adopted amendments that may be more stringent than the requirements outlined  in this guide and the base code.