本推荐规程涉及将提高电气安全性的系统和设备设计技术以及设备选择。本规程中的技术旨在补充安装规范和设备标准的最低要求。它不包括通信、编程或生命安全系统，如火灾报警和安保。

This Recommended Practice addresses system and equipment design techniques and equipment selection that will improve electrical safety. The techniques in this Practice are intended to supplement the minimum requirements of installation codes and equipment standards. It does not include communications, programming, or life safety systems such as fire alarm and security.