本推荐规程描述了如何估算工业和商业电力系统的成本，包括新建和正在扩建或现代化的电力系统。本推荐做法仅限于制定工业和商业配电系统的相对资本成本。虽然本文件简要指出了与总成本或真实成本相关的考虑因素，以及一些技术考虑因素，但对于配电系统的这些方面的彻底分析，应参考其他标准和参考文献。对于在该领域经验有限的电力工程师来说，这一推荐做法可能具有最大的价值。它还可以帮助所有负责工业和商业电力系统电气设计的工程师。

This recommended practice describes how to estimate the costs of industrial and commercial power systems, both new and those undergoing expansion or modernization. This recommended practice is restricted to the development of the relative capital cost of industrial and commercial power distribution systems. While this document briefly points out considerations related to total cost or true cost, as well as some technical considerations, other standards and references should be referred to for a thorough analysis of these aspects of power distribution systems. This recommended practice is likely to be of greatest value to the power-oriented engineer with limited experience in this area. It can also be an aid to all engineers responsible for the electrical design of industrial and commercial power systems.